SME IB Physics Unit 4 Problems - WebAssign

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习题练习：SME IB Physics Unit 4 Problems
本Practice来源于WebAssign，是在线Practice的打印版，您也可以访问本平台网站(https://webassign.org/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 345 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。本试卷的直接作答链接 https://webassign.org/test345.html
作者: physics 发布日期: 2023-06-10 16:57

答题人: 匿名未登录开始时间: 23年06月09日 16:24 切换到: 单题模式

1#

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The diagram shows two wacgurvf50,wh /y/vuos1 dj5h-ves. One wave is emitted from source $s_{1}$ and travels to point $P$. The other wave is emitted from source $s_{2}$ and travels to point $P$.

What is the path difference between the waves? (1.0 分)

A. $1 \lambda$

B. $1 \frac{1}{2} \lambda$

C. $2 \lambda$

D. $2 \frac{1}{2} \lambda$

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2#

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Diamonds are highly valued because of their sparkle. This is caused by total inza+/s xz xx: .swriw/6ternal reflection, which reflects most of the light that falls onto a cut diamond out of the face we see. Fake gems, called 'paste', are often used in jewellery because tw sxxa/s6: / rwx+zi.zhey are cheaper. However, paste gems sparkle much less than real diamonds.

The diagrams show a possible path of light through a real diamond, and another through a fake.

If:

- $n=$ refractive index;

- $n_{d}$ is the refractive index of the diamond

- $n_{f}$ is the refractive index of the fake

- $v=$ speed of light

- $v_{d}$ is the speed of light in the diamond

- $v_{f}$ is the speed of light in the fake

Which row in the table contains only statements which must be true?

(1.0 分)

A. B. C. D.

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3#

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Which phrase correctly completes the followinp).u) tjgbp2p g sentence?

In a ray diagram showing reflection, the angle of incidence is the angle between (1.0 分)

A. the incident ray and the boundary surface.

B. the incident ray and the normal.

C. the incident ray and the reflected ray.

D. the reflected ray and the boundary surface.

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4#

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Young's double-slit experiment is setup as shown, including a monochromatic soqr01 7z e- vi0dm2mcwaurce, a single slit, a double slit and a screen. What is the purpose of the single slit0emcv71 2mi0- zadrqw in this experiment?

(1.0 分)

A. To make sure there is equal light intensity in the double-slits

B. To make sure the light is coherent upon the double-slits

C. To decrease light intensity for the double-slits

D. To reduce the wavelength of the light

E. To filter out light rays going in other directions

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5#

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Which of the following options will alter t5zvw2 :dfacs;d3hjd,he frequency of a wave? (1.0 分)

A. Reflection

B. Refraction

C. Diffraction

D. None of the above

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6#

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The effect of a double slit on monoc2rb (y (v m01sulh4o-gjmns 8pucq7f1p7u .kthromatic light is observed by the set up in the diagquul(- 801bf poynmv2 p ucms jrk7htg14( s.7ram below.

Interference fringes are seen on the screen.

Which of the following changes would increase the distance between the adjacent fringes? (1.0 分)

A. Decrease the width of all the slits

B. Move the screen closer to the double-slit

C. Use light of a higher frequency

D. Decrease the distance between the two slits

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7#

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Identical waves that begin propagation at the same time leave from taex)4eo+wx4 a wo different sources and arrive at the same 4) xewxoa4ae+point point $X$. The first source is $18 \mathrm{~m}$ from point $X$. The second source is $10.5 \mathrm{~m}$ from point $X$. The waves of both sources have a wavelength of $3 \mathrm{~m}$. What is observed at $X$ ? (1.0 分)

A. Complete destructive interference

B. Partial destructive interference

C. Partial constructive interference

D. Complete constructive interference

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8#

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Two waves from individual pom x94hr- aw)nja8dmcnq.5w ,s9ojed3int sources meet at a point $X$. Which of the following conditions is necessary for stable interference pattern to be observed at point $X$ ? (1.0 分)

A. Waves of equal amplitude

B. Waves of equal wavelength

C. A constant phase difference between the waves

D. The waves must be electromagnetic

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9#

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The double-slit equation des/yds5,qca yv:sue*m* cribes the relationship between the separation distance of the fringes ocs m :v *dq/sy5uy,*aen the screen, s, the distance between the screen and the slits, $D$, the separation of the slits, $d$, and the wavelength, $\lambda$, of the light.

$$
s=\frac{\lambda D}{d}
$$

Which line gives the correct units for the quantities?

(1.0 分)

A. B. C. D.

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10#

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When a light ray enters a denser medium and rei(:ofea w*l aehm1o+-;m yui,fracts, some of the characteristics of the wave will change. Which of the following options is correct about this chan1y,ui;aof-ewi*e o:h m l (+mage?

(1.0 分)

A. B. C. D.

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11#

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When does diffraction oc; q 3r+nu53l na9ks ajv16qpnxcur? (1.0 分)

A. In all waves

B. In soundwaves only

C. In transverse waves only

D. In light waves only

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12#

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A double slit interference experiment is conducx1r + c.hfur/vted using monochromatic light of wavelengtuf /1v.rr+hcx h $\lambda$. The centre of the observed pattern is a bright fringe.

What is the path difference between two waves which interfere to give the second dark fringe from the centre?
(1.0 分)

A. $\lambda$

B. $1.5 \lambda$

C. $2.5 \lambda$

D. $3.5 \lambda$

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13#

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This diagram below shows two apertures through which planar w7/n6 virio-ejaves are passed as they are moving to the left.vi-i noj 6/e7r The wavefronts show crests moving in phase. Given this information, at which point will the amplitude of the waves be a minimum?

A flat plate made of glass has a refractive index of $n=1.52$. What is the speed of light within this material? (1.0 分)

A. $1.36 \times 10^{8} \mathrm{~m} \mathrm{~s}^{-1}$

B. $1.67 \times 10^{8} \mathrm{~ms}^{-1}$

C. $1.97 \times 10^{8} \mathrm{~m} \mathrm{~s}^{-1}$

D. $2.66 \times 10^{8} \mathrm{~m} \mathrm{~s}^{-1}$

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14#

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When moving from material ) wpip/:m u :qcfnf7p+$A$ to material $B$, the direction of a ray of light moves away from the normal. If $n_{A}$ and $n_{B}$ are the refractive indices of materials $A$ and $B$ respectively, then which of the following statements is true in this situation?
(1.0 分)

A. The ratio of $\frac{n_{A}}{n_{B}}$ is larger than one

B. The ratio of $\frac{n_{A}}{n_{B}}$ is less than one

C. The ratio of $\frac{n_{A}}{n_{B}}$ is exactly than one

D. The ratio of $\frac{n_{A}}{n_{B}}$ cannot be known without more information

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15#

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The diagram below shows 3zvxs0 8kjg6han arrangement used to investigate double slit interference using micrv8h g3xzk0j 6sowaves.

The diagram below shows the view from above:

The microwaves from the transmitter are polarised. These waves are detected by the aerial in the microwave detector (probe). The aerial is a vertical metal rod.

The detector is moved along the dotted line UY. As it is moved, maximum and minimum signals are detected. Maximum signals are first detected at points $\mathrm{V}$ and $W$. The next maximum signal is detected at the position $X$.

The distances between each of the two slits, $S_{1}$ and $S_{2}$ and the microwave receiver when the aerial is in position $\mathrm{X}$ are $\mathrm{S}_{1} \mathrm{X}=$ $0.3335 \mathrm{~m}$ and $\mathrm{S}_{2} \mathrm{X}=0.3615 \mathrm{~m}$

Find the wavelength of the microwave and select the two correct reasons that explain why the signal strength falls to a minimum between $U$ and $V$, and between $V$ and W.

(1.0 分)

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16#

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A ray of light is incident on w.f hdck71- os5rti4kdn y6:qa material made from three layers, each having a different optical density, so that in each layer the likck5 :6tns h-wo .dd1q47rif yght travels at a different speed.

- For layer 1: refractive index $=n_{1}$ and the speed of light $=c_{1}$

- For layer 2: refractive index $=n_{2}$ and the speed of light $=c_{2}$

- For layer 3: refractive index $=n_{3}$ and the speed of light $=c_{3}$

- Angle of incidence $=i$

- Angle of refraction $=r$

This is illustrated in the diagram below:

Which is the correct expression for $c_{3}$, the speed of light in the thirdlayer? (1.0 分)

A. $\frac{c_{1} n_{1}}{n_{3}}$

B. $\frac{c_{2} n_{2}}{n_{3}}$

C. $\frac{c_{1} n_{1}}{n_{2}}$

D. $\frac{c_{2} n_{2}}{\sin \left(r_{3}\right)}$

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17#

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Which row correctly describes the conditions for constructive and destruct un ;jv8 cq4h:i xoy3hb8e6rw(ive interference in a double-slj e8(ouhw6iqrv:8 4 yc3;nb hxit diffraction pattern?

(1.0 分)

A. B. C. D.

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18#

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Which property of a wave does not change as a result of refractionxnyt-nma*q je o:xu8fr+ 1/h p9 s3ht0? (1.0 分)

A. Frequency, $f$

B. Wavelength, $\lambda$

C. Wave speed in the medium, $v$

D. Amplitude, $A$

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19#

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The diagram shows a wave approacdw84scm 9x0 ka *kwly418xlrdhing an aperture.

Which diagram correctly shows the resulting diffraction pattern for the wave?

(1.0 分)

A. B. C. D.

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20#

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Which of the following images shown below best represents the path tsz0o, +9 0 x yl-m09kmo9 o1vagvoomoof visible light traveling through a glaoa09mogk0szo1 m v-voxo+y9 ltm0 o9 ,ss prism?

(1.0 分)

A. B. C. D.

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21#

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A student is investigating the int8n y0n 2pbmbaeh ftqpw 7,7p(5erference of waves. They set up coherent wavesyf75(b87ep2 nwmbp,aqn pt0h produced at points $\mathrm{S}$ and $\mathrm{T}$ and travel outwards in all directions.

The line $X Y$ is halfway between $S$ and $T$ and perpendicular to the joining line $S$ and $T$. The distance $X Y$ is much greater than the distanceST.

Which line or lines would an interference pattern be seen along?
(1.0 分)

A. WZ only

B. $X Y$ only

C. Both $X Y$ and WZ

D. Neither XY or WZ

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22#

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Our fingerprints are made up of f c/l 0se+,p+3rhbjeo a series of ridges on the end of the finger. These ridges can be 'read' by electronic device,jrcf0 ob h/3eps ++les.

The diagram below shows a certain type of fingerprint detector below, which works by scattering light when pressure is applied to a plastic screen. The ridges of the fingerprint press the plastic film against the glass when the finger is pressed to the screen.

When not in use, the plastic screen and the glass have a small air space between them. The diagram below shows the two possible paths for the light when the finger is pressed down.

Which row in the table correctly describes the properties of the fingerprint detector that cause the bright and dark patches on the image produced by the camera?

(1.0 分)

A. B. C. D.

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23#

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In a Young's double-slit experiment, theum2 w0y4dgfwk+dbfy 8;q,f u. spacing of the double slits is $d$ and the distance between the slits and the screen on which fringes are formed is $D$. When monochromatic light of wavelength $\lambda$ is incident on the slits the distance between adjacent fringes on the screen is $s$.

Which row shows another arrangement that produces a fringe spacing of $s$ ?

(1.0 分)

A. B. C. D.

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24#

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A monochromatic laser beam i:0enwmei)9mc s shone into the surface of a tank filled with water. The effects on m ie0)cw em9:nthe laser beam due to the water are observed.

How will the properties of the light be affected by the water?

(1.0 分)

A. B. C. D.

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25#

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Which image shows the correcqy4 .k /aqr+k/ax kt0ht ray diagram for light passing from air into water? k//qkkaqrx4+ .0t ayh

(1.0 分)

A. B. C. D.

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26#

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A sound source $X_{1}$ is positioned $w \; cm$ to the left of sound source $X_{2}$. Both sound sources are $y \; m$ below the detection line $A B$. $A B$ runs parallel to $X_{1} X_{2}$. When a sound detector is slowly moved along the line $A B$, a maxima is first detected at $P$, followed by a minima at $Q$, with another maxima at $R$ and a minima at $S$. $P Q R S$ are all equidistant apart with $X_{1} S=X_{2} S$.

Which one of the following is a correct expression for the wavelength of the sound? (1.0 分)

A. $X_{1} Q-X_{1} P$

B. $X_{1} R-X_{1} Q$

C. $X_{1} Q-X_{2} Q$

D. $X_{1} R-X_{2} R$

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27#

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Ray diagrams can be used to show the reflection, refractiomw +l8 9smtf i779myjyn and transmission of light at the boundary be7jmi+f smyw7y 9l8m t9tween media.

In the diagram, what feature does $X$ represent? (1.0 分)

A. Reflected ray

B. Refractedray

C. Transmitted ray

D. Incident ray

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28#

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$\mathrm{K}$ is the source of a wave of frequency $25 \mathrm{~Hz}$.

The wave travels to point $M$ by two routes, $K \rightarrow L \rightarrow M$ and $K \rightarrow M$. The speed of the wave is $15 \mathrm{~m} \mathrm{~s}^{-1}$.

What is the path difference between the two waves at M in terms of the wavelength $\lambda$ of the waves?
(1.0 分)

A. $4 \lambda$

B. $6.6 \lambda$

C. $31.6 \lambda$

D. $2.4 \lambda$

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