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
Physics MCQs with Answers
The waves that require a material medium for their propagation are called__________________?
A. matter waves
B. electromagnetic waves
C. carrier waves
D. mechanical waves
When two identical traveling waves are superimposed, the velocity of the resultant wave__________________?
A. decreases
B. increases
C. remains unchanged
D. becomes zero
If stretching force T of wire increases, then its frequency __________________?
A. decreases
B. increases
C. remains the same
D. any of above
It is possible to distinguish between transverse and longitudinal waves form the property of __________________?
A. refraction
B. polarization
C. interference
D. diffraction
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
Increase in velocity of sound in the air for 1°C rise in temperature is_________________?
A. 1.61 ms-1
B. 61.0 ms-1
C. 0.61 ms-1
D. 2.00 ms-1
On loading the prong of a tuning form with wax its frequency____________________?
A. increases
B. decreases
C. remains unchanged
D. may increase or decrease
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
The velocity of sound in air would become double than its velocity at 0°C at temperature________________?
A. 313°C
B. 586°C
C. 819°C
D. 1172°C
