Please select To the mobile version | Continue to access the desktop computer version

WebAssign

 Forgot password?
 Register Now

 

      

Upload Images

Unused Images

Tips: allowed image types are: gif, jpg, jpeg, png, webp; When uploading is finished, thumbnails will be generated and shown above. You can either double click on the thumbnail or simply drag the thumbnail with your mouse, the image will be bound to the current problem and displayed below it.

Used Images in Current Log

Tips: What is shown in this column are all the images associated with this exam log. Those bound to a particular problem will also be displayed immediately underneath it; Deleting any images will make them to be transfered to the "Unused images" category.


习题练习:SME IB Physics Unit 4 Problems  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: 整卷模式

标记此题
1#
 
单选题搜藏此题  
  Which row correctly describes the conditions fo p5*2ywy; naw qlgo(.er constructive and destructive interferenc.o y ;* p5wlegqy2wan(e in a double-slit diffraction pattern?
(1.0 分)
参考答案:    
标记此题
2#
 
单选题搜藏此题  
  The diagram below shows an arrangement used to investigate double sli:j4bza+ ) +vsqgbvze9 ;, adbqt interference g ja b+vqe za,b4q)ds ;9:zbv+using microwaves.



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)
参考答案:    
标记此题
3#
 
单选题搜藏此题  
  When moving from matjps l-o2v3j o8erial $A$ 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)
参考答案:    
标记此题
4#
 
单选题搜藏此题  
  A double slit interference experiment is conducted uvgrv+-- 6t n k5ri.7pyfde6qnsing monochromatic light of wavelt-g- 6evk. nrdf p5yi6 n+7rqvength $\lambda$. 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)
参考答案:    
标记此题
5#
 
单选题搜藏此题  
  Our fingerprints are made up of a series of ridges on the en;lzg p2/78rdu pz8v1somm *vlk2j6bhd of the finger. These ridges can be 'read' by electronic21 * lv8b2 ;muzp6rjzkd8sol7 mhp/vg devices.

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)
参考答案:    
标记此题
6#
 
单选题搜藏此题  
  In a Young's double-slit experiment, the spacing of the75m5sdagwj2 i 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)
参考答案:    
标记此题
7#
 
单选题搜藏此题  
  Ray diagrams can be used to show the refj fjs)(5w4 3*tz j 8p(kvdes.k p9lfrulection, refraction and transmission of light at the boundary betw)f5j fjstdv9z rl8( ep s .w3*kup(k4jeen media.


In the diagram, what feature does $X$ represent? (1.0 分)
参考答案:    
标记此题
8#
 
单选题搜藏此题  
  Which of the following images shown below best represents the path b*rzjj f7s2h )of visible light traveling through)j7s*j fb rz2h a glass prism?

(1.0 分)
参考答案:    
标记此题
9#
 
单选题搜藏此题  
  Which of the following options will alter the frequency oufeh,2,l ayj1 f a wave? (1.0 分)
参考答案:    
标记此题
10#
 
单选题搜藏此题  
  Identical waves that begin propagation at the same time jo dh7 lqft)x(r, k5hc ofr01-leave from two different sources and arrive at thk7fh)1,h c(qxto j-5 0od frrle same 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)
参考答案:    
标记此题
11#
 
单选题搜藏此题  
  $\mathrm{K}$ 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)
参考答案:    
标记此题
12#
 
单选题搜藏此题  
  Which property of a wave does not change as a result of refra9fyj rw6gkpeyb;s ) *2ction? (1.0 分)
参考答案:    
标记此题
13#
 
单选题搜藏此题  
  When does diffraction p9up4d4kt, /fs0x p tet;u djb3gc;l8 occur? (1.0 分)
参考答案:    
标记此题
14#
 
单选题搜藏此题  
  The diagram shows two waves. One wave is emitted from sourc*4a7leaquq5 nfo0 v*ze $s_{1}$ 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)
参考答案:    
标记此题
15#
 
单选题搜藏此题  
  Young's double-slit experiment is setup as shown, including-;j jp67lav(os6wpfr a monochromatic source, a single slit, a doa6fvw 6 p-p7jj(rs;ol uble slit and a screen. What is the purpose of the single slit in this experiment?

(1.0 分)
参考答案:    
标记此题
16#
 
单选题搜藏此题  
  A ray of light is incident on a material made from thre2jy +6g 3)jvgj2ptyp ie layers, each having a different optical densit yg+3pyjpj622)gvt j iy, so that in each layer the light 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)
参考答案:    
标记此题
17#
 
单选题搜藏此题  
  Two waves from individual po v(y3i,o pamk+ed z,6sjf /,ftint 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)
参考答案:    
标记此题
18#
 
单选题搜藏此题  
  The diagram shows a wave approaching an 0rd )kqbvb1dixn2h,kz5qqc3w-h ), ic,x7c d aperture.


Which diagram correctly shows the resulting diffraction pattern for the wave?
(1.0 分)
参考答案:    
标记此题
19#
 
单选题搜藏此题  
  The effect of a double slit on monochromatic light is observqmaa- m 9rxwgl+v;0nle,j64yed by the set up in the d ;w90qj 6a,meymxl-+vg4a rnliagram below.



Interference fringes are seen on the screen.

Which of the following changes would increase the distance between the adjacent fringes? (1.0 分)
参考答案:    
标记此题
20#
 
单选题搜藏此题  
  When a light ray enters a denser medium agej5 xnmj b(/3nd refracts, some of the characteristics of the wave will change. Which of the following options is (jx3 5 nje/mgbcorrect about this change?

(1.0 分)
参考答案:    
标记此题
21#
 
单选题搜藏此题  
  A student is investigating the interference of waves. The.p 84fn dqbvm0y set up coherent waves produced at po.4dmf np q8bv0ints $\mathrm{S}$ 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)
参考答案:    
标记此题
22#
 
单选题搜藏此题  
  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)
参考答案:    
标记此题
23#
 
单选题搜藏此题  
  Which phrase correctly completes the following sentencg1ji 9pwkhh/dvs ,0p: e?

In a ray diagram showing reflection, the angle of incidence is the angle between (1.0 分)
参考答案:    
标记此题
24#
 
单选题搜藏此题  
  This diagram below shows two apertures through which planimj 1 .z)sjtfm--0moz ar waves are passed as they are moving to the left. The wavefronts show crestsmj)tz si fmjz.o-01 m- 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)
参考答案:    
标记此题
25#
 
单选题搜藏此题  
  Diamonds are highly valued wh5d *9oq1k)j0zc ,u0xh lat wbecause of their sparkle. This is caused by total internal reflection, which reflects most of the lighth ocjl1dtw9,*5 x )hk wu00azq that falls onto a cut diamond out of the face we see. Fake gems, called 'paste', are often used in jewellery because they 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)
参考答案:    
标记此题
26#
 
单选题搜藏此题  
  Which image shows the correct ray diagram forr9y scx, daoi691aj4nn79 jpx light passing from air into water? xj r9pj6nxc47di1a sa,oy9 9 n
(1.0 分)
参考答案:    
标记此题
27#
 
单选题搜藏此题  
  The double-slit equation describes the relationship between the separo,zs ; :1uqpwqation distance of the fringes on the screen, s, the distance between the screen and the wspz: ,qo;1qu 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)
参考答案:    
标记此题
28#
 
单选题搜藏此题  
  A monochromatic laser beam is shone into the surface of a jkn ggg4vo.,m5l7o5(d i1bp6(f y e rptank filled with water. The effects on the laser beam due to the wa5p gdm o(gf,jok5v4n( 1ir6lp7e b.gyter are observed.

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

(1.0 分)
参考答案:    
  • 答题人:
  • 总分:28分 及格:16.8分 时间:不限时
    未答题: 已答题:0 答错题:
    当前Practice共有 28 道题

    Archiver|手机版|Jailroom|WebAssign

    2024-5-27 20:46 GMT+8 , Processed in 0.106102 second(s), 68 queries , Redis On.