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

Related Mcqs:

1. 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

2. 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

3. A sensitive galvanometer gives full-scale deflection with 100 mV. If the resistance of the galvanometer is 50? the maximum current that can flow through safely is__________________?

   A. 2.0 mA
   B. 20 mA
   C. 200 mA
   D. 0.2 mA

4. Galvanometer is a very sensitive device with______________________?

   A. very low damping
   B. very high damping
   C. no damping at all
   D. radial field disintegration

5. 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

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

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

7. 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

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

   A. 42Hz
   B. 7 Hz
   C. 256Hz
   D. 262Hz

9. An alternating current is represented by the equation I = I∫sinπt which of the following equation represents an alternating current of frequency and amplitude twice that of the above current ?

   A. I = 2I∫Sin(πt/2)
   B. I = 2I∫Sin(2πt)
   C. I = 2ISinπt
   D. I = I∫sin(2πt)

10. S.I unit of frequency is_________________?

    A. Vibration S-2
    B. Radian
    C. Hertz
    D. ms-1