What is meant by refraction of a wave?
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What is parallel force?
What is the principle of superposition?
what is overall expansion,hp expansion,ip expansion and axial shaft of a steam turbine?
Define Mass?
How many neutrons are present in a single deuterium nucleus?
Why is the earth not used as a return wire in a telephone system, while it is dine so in case of telegraph system.
What is the velocity of sound air?
Explain interference?
What is constructive interfernce?
our breath can produce current?
Why dies blotting paper absorb ink ?
Define Penumbra ?