nda physics quiz oscillation and waves

Nda physics quiz oscillation and waves

Choose the appropriate option.

Question 1. Which one among the following is not produced by sound waves in air?

Polarization (NA)

Diffraction (NA)

Reflection (NA)

Refraction (NA)

Choose the appropriate option.

Question 2. A swinging pendulum has its maximum acceleration at

the bottom of the swing (NA)

the two extremities of the swing (NA)

every point on the swing (NA)

no particular portion of the pendulum (NA)

Choose the appropriate option.

Question 3. For a simple pendulum, the graph between T2 and L (where, T is the time period and L is the length) is

straight line passing through origin (NA)

parabolic (NA)

circle (NA)

None of the above (NA)

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Question 4. SONAR is mostly used by

doctors (doctors )

engineers (NA)

astronauts (NA)

navigators (NA)

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Question 5. The ceilings of a concert hall are generally curved

because they reflect the sound to the audience (NA)

because they can absorb noise (NA)

to have better aeration in the hall (NA)

as any sound from outside cannot pass through a curved ceiling (NA)

Choose the appropriate option.

Question 6. Bats can know about their prey at a distance even in the night by emitting

infrared lights (NA)

ultraviolet lights (NA)

chemicals from their body (NA)

ultrasonic sounds (NA)

Choose the appropriate option.

Question 7. Sound waves are similar to the waves

of laser light passing through air (NA)

generated in a stretched wire by hitting or plucking the wire (NA)

generated in a pipe filled with air by moving the piston attached to the pipe up and down (NA)

generated by the mobile phone towers (NA)

Choose the appropriate option.

Question 8. A sound wave has frequency of 2 kHz and wavelength of 35cm. If an observer is 1.4 km away from the source, then after what time interval could the observer hear the sound

2s (NA)

20s (NA)

0.5s (NA)

4s (NA)

Choose the appropriate option.

Question 9. A sound wave has frequency of 2 kHz and wavelength of 35cm. If an observer is 1.4 km away from the source, then after what time interval could the observer hear the sound

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Question 10. Which one among the following waves bats use to detect the obstacles in their flying path?

Infrared waves (NA)

electromagnetic waves (NA)

Ultrasonic waves (NA)

Radio waves (NA)

Choose the appropriate option.

Question 11. The loudness of sound is related to

its frequency (NA)

its amplitude (NA)

its speed (NA)

its pitch (NA)