When the speed of a moving body is doubled then
A. its K.E is doubled
B. its acceleration is doubled
C. its P.E is doubled
D. its momentum is doubled
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Physics
Gravitational P.E of a body has
A. no formula
B. a formula mgh only
C. a formula
D. no general formula
Gravitational P.E of a body has Read More »
The highest value of escape velocity in solar system is planet
A. Earth
B. Neptune
C. Jupiter
D. Moon
The highest value of escape velocity in solar system is planet Read More »
The tides raise the mater in the see roughly in a day
A. once
B. twice
C. four time
D. eight time
The tides raise the mater in the see roughly in a day Read More »
Work done on the body equals to the
A. change in its K.E always
B. change in its P.E always
C. change in its K.E and change in its P.E
D. neither change in K.E and nor change in its P.E
Work done on the body equals to the Read More »
In open organ pipe
A. only even harmonics are present
B. only odd harmonics are present
C. both even and odd harmonics are present
D. selected harmonics are present
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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
Doppler effect applies to
A. sound wave only
B. light wave only
C. both sound and light waves
D. neither sound nor light wave
Doppler effect applies to Read More »
Beats are the results of
A. diffraction of sound waves
B. constructive and destructive interference
C. polarization
D. destructive interference
Beats are the results of Read More »
The periodic alternation of sound between maximum and minimum loudness are called
A. silence zone
B. interference
C. beats
D. resonance
The periodic alternation of sound between maximum and minimum loudness are called Read More »