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.Management Sciences
Category: Physics Mcqs
The angular speed of seconds hand of a watch in rads-1 is______________?
0
A. π
B. π/2
C. π/30
D. π/180
Which experiment shows that wavelength of light is smaller than that of sound___________________?
A. Diffraction
B. Polarization
C. Interference
D. Reflection
If moon radius is 1600 km and g on its surface is 1.6 ms-2 then the escape velocity on the moon is ___________________?
A. 1600 ms-1
B. 50.6 ms-1
C. 71.6 ms-1
D. 2263ms-1
Two fog droplets have radius 2:3 their terminal velocities are_______________?
A. 4:06
B. 4:09
C. 2:09
D. 4.3
An electron enters a region where the electric field E is perpendicular to the magnetic field B. It will suffer no deflection if_________________?
A. E = BeV
B. B = eE/V
C. E = BV
D. E = BeV/2
Reflecting mirrors in laser is used to______________?
A. Further stimulation
B. Lasing more
C. For producing more energetic lasers
D. All
Ultrasonic have__________________?
A. frequency in the audible range
B. frequency is greater than 20 kHz
C. frequency lower than 20 Hz
D. all of above
If the length of the second pendulum becomes four times, then its time period will become________________?
A. 4 times
B. 6 times
C. 8 times
D. 2 times
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