Explain heat treatment. Why and how is it done?
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Explain what is cardiac output?
graph between frequency of photon and velocity of photo elrectron?
What is the commercial unit of electrical energy ?
What is the effect of using two converging lenses in one optical instrument?
in one optical instrument, what is the effect of usingtwo converging lenses?
Why does sun appear flat during sunrise and sunset?
Why dies blotting paper absorb ink ?
Why ate some clocks slow in summer and fast in winter ?
Explain the Liquids ?
Why a water pump raises water to a greater height at Bombay than at Simla
What is the proper definition of light?
what is meant by vector atom model and what is the use of it?