Engineering Physics I Practice Test 7

1. Which is different from others by units?

2. In a resonance tube with tuning fork of frequency 512Hz, first resonance occurs at water level equal to 30.3cm and second resonance occurs at 63.7cm. The maximum possible error in the speed of sound is?

3. An organ pipe closed at one end has a fundamental frequency of 1500Hz. The maximum number of overtones generated by this pipe, which a normal person can hear is?

4. A boat at anchor is rocked by waves, whose crests are 100m apart and velocity is 25m/s. The boat bounces up once in every __________

5. A siren placed at a railway platform is emitting sound of frequency 5kHz. A passenger sitting in a moving train ‘A’ records a frequency of 5.5 kHz while the train approaches the siren. During his return journey in a different train B he records a frequency of 6kHz while approaching the same siren. The ratio of the velocity of train B to that train A is?

6. Velocity of sound in air is ___________

7. Statement: When two vibration tuning forks having frequencies 256Hz and 512Hz are held near each other, beats cannot be heard.
Reason: The principle of superposition is valid if the frequencies of the oscillators are nearly equal.

8. When the length of the vibrating segment of a sonometer wire is increased by 1%, the percentage change in its frequency is?

9. In the experiment to determine the speed of sound using a resonance column ___________

10. The frequency of a tuning fork is 256. It will not resonate with a fork of frequency?