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CTET Prep: Science Questions - Physics - Wave Motion and Sound
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Wave motion is the transfer of energy and momentum from one point of the medium to another point of the medium without the actual transport of matter between two points.

CTET Prep: Science Questions - Physics - Wave Motion and Sound
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25 Questions

1. Consider the following statements with reference to X-rays:
1. They produce heat when absorbed by matter.
2. They are generated when fast moving electrons strike a metal target.
3. They can penetrate through a thin sheet of aluminium. Which of the statements given above are correct?
2. The speed of sound in air at S.T.P. is 300 m/s. If the air pressure becomes double, the temperature remaining the same, the speed of sound would
3. Consider the following statements:
1. Microwaves are used in radar system for air craft navigation.
2. Microwave ovens are used for cooking purposes.
3. A radar using microwave can help in detecting the speed of tennis ball, cricket ball, automobile while in motion. Which of these statements are correct?
4. Sound wave cannot pass through
5. When the bob in central position the forces are
6. How does the speed v of sound in air depend on atmospheric pressure p ?
7. Consider the following statements:
1. A geo-stationary satellite is at an approximate height of 10,000 km.
2. FM transmission of music is a very good quality because the atmospheric or man made noises which are generally frequency variations can do little harm. Which of the statements give above is/are correct?
8. In a stationary wave all the particles of the medium
9. If vm is the velocity of sound in moist air and vd is the velocity of sound in dry air, then
10. Match List-I (Electromagnetic radiation) with List-II (Approximate wavelength in metres) and select the correct answer using the codes given below the lists: List-I List-II
A. Infrared radiation
1. 10-12
B. X-rays 2. 10-5
C. Ultraviolet radiation
3. 10-10
D. Gamma rays 4. 10-8 Codes A B C D
11. The same notes being played on sitar and veena differ in
12. Beats occur because of
13. The velocities of sound in air and water are 336 m/s and 1470 m/s, respectively. Two sources producing waves of wavelength 6 m and 7 m sounded together will produce beats
14. If the ratio of the amplitudes of two waves is 4 : 3, then the ratio of maximum and minimum intensity is
15. Which among the following is the necessary condition for simple harmonic motion?
16. When two sound waves are superimposed, beats are produced when they have
17. What frequency range of E.M. waves are used for commercial FM radio?
18. The ratio of the speed of X-rays to that of gamma rays
19. The phenomenon in which the amplitude of oscillation of pendulum decreases gradually is called
20. Assertion (A) : The velocity of sound in air increases due to the presence of moisture in it. Reason (R) : The presence of moisture in air lowers the density of air of these statements. Codes
21. Stationary waves are so called because in them
22. There is no net transfer of energy by the particles of the medium in
23. When an aeroplane attains a speed higher than the speed of sound in air a loud bang is heared. This is because
24. In which of the following sequences are the electromagnetic radiations in decreasing order of wave lengths
25. Sound waves are

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