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If at a place the speed of a sound wave of frequency 300 Hz is V, the speed of another wave of frequency 150 Hz at the same place will be:
V
V/2
2V
4V
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In gases of diatomic molecule, the ratio of two specific heat is
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Surface of sodium is illuminated by a light of 6000Å wavelength. Work function of sodium is 6 eV.Then minimum K.E. of emitted electrons is _____
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