The beats frequency (sensible) for a human car is _____________________?

Related Mcqs:

1. A man is in a car is moving with velocity of 36km/hr. His speed with repect to the car is ____________________?

   A. 10m/s
   B. 36m/s
   C. zero
   D. infinite

2. A simple pendulum has a bob of mass m and its frequency is f. If we replaced the bob with a heavier one say of 2m then that will be its new frequency ?

   A. 1/4f
   B. 1/2f
   C. frequency lower than 20 Hz
   D. 2f

3. Fundamental frequency of stationary waves in open pipe is ______________ times the frequency in closed pipe?

   A. One
   B. Two
   C. Four time
   D. None of these

4. The number of beats produced per second is equal to____________________?

   A. the sum of the frequencies of two tuning forks
   B. the difference of the frequencies of two tuning forks
   C. the ratio of the frequencies of two tuning forks
   D. the frequency of either of the two tuning forks

5. Beats are the results of____________________?

   A. diffraction of sound waves
   B. constructive and destructive interference
   C. polarization
   D. destructive interference

6. Which one is the correct relation for fundamental frequency of open and closed pipe ?

   A. fopen = 2 fclosed
   B. fclosed = 2fopen
   C. fopen = fclosed
   D. fopen = 1 / f closed

7. If stretching force T of wire increases, then its frequency __________________?

   A. decreases
   B. increases
   C. remains the same
   D. any of above

8. The normal ear is the most sensitive in the frequency range___________________?

   A. 20000 to 30000 hertz
   B. 10 to 20 hertz
   C. 2000 to 4000 hertz
   D. 6000 to 8000 hertz

9. Waves produced at the surface of water by a pencil executing vibrating motion if held vertically at a frequency of 50Hz are__________________?

   A. Longitudinal
   B. Transverse
   C. Periodic
   D. both A and C

10. When car takes turn around a curve road, the passengers feel a force acting on them in a direction away from the center of the curve. It is due to__________________?

    A. Centripetal force
    B. Gravitational force
    C. Their inertia
    D. Centrifugal force