Question :
A) amplitude
B) velocity
C) wavelength
D) frequency
Answer : A
Of the following properties of a wave, the one that is independent of the other is its
A) amplitude
B) velocity
C) wavelength
D) frequency
Answer : A
Description :
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out of the following, which is not emitted by radioactive substance?
A) Electrons
B) Electromagnetic radiations
C) Alpha particles
D) Neutrons
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Mirage is due to
A) unequal heating of different parts of the atmosphere
B) magnetic disturbances in the atmosphere
C) depletion of ozone layer in the atmosphere
D) equal heating of different parts of the atmosphere
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Stars appears to move from east to west because
A) all stars move from east to west
B) the earth rotates from west to east
C) the earth rotates from east to west
D) the background of the stars moves from west to east
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Rectifiers are used to convert
A) Direct current to Alternating current
B) Alternating current to Direct current
C) high voltage to low voltage
D) low voltage to high voltage