In vibrating cord the points where the amplitude is maximum, are called ___________________?

Related Mcqs:

1. A rubber cord of cross-sectional area 2cm2 has a length of 1m. When a tensile force of 10N is applied the length of the cord increases by 1cm. What is the youngs modulus of rubber ?

   A. 2×108 Nm-2
   B. 5×106 Nm-2
   C. 0.5×10-6 Nm-2
   D. 0.2×10-6Nm-2

2. 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

3. The distance covered by a body in one complete vibration is 20cm. What is the amplitude of body ___________________?

   A. 10 cm
   B. 5 cm
   C. 15 cm
   D. 7.5 cm

4. 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)

5. When the amplitude of a wave becomes double its energy become_________________?

   A. Double
   B. Four times
   C. One half
   D. None time

6. Displacement of the body in S.H.M is equal to amplitude when the body is at_______________?

   A. Mean position
   B. Elsewhere
   C. Extreme position
   D. None

7. The locus of all points in a medium having the same phase of vibration is called____________________?

   A. crest
   B. trough
   C. wavelength
   D. wave front

8. The scales of temperature are based on two fixed points which are_________________?

   A. The temperatures of water at 0? 100?C
   B. The temperature of melting ice and boiling water at atmospheric pressure
   C. The temperatures of ice cold and boiling water
   D. The temperatures of frozen and boiling mercury

9. Which phenomena can be applied to estimate the velocity of star with respect to earth ___________________?

   A. Dopplers effect
   B. Interference of waves
   C. Beats phenomena
   D. All of these

10. Sound waves do not travel in vacuum because ___________________?

    A. they are transverse waves
    B. they are stationary waves
    C. they require material medium for propagation
    D. they do not have enough energy