What is the proper definition of light?
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Why is a man hit harder, when he falls on a paccafloor than when he falls on sand from the same height ?
What is optical medium?
Explain what is relation between magnetic and electricity and why?
Explain the Modes of Transfer of Heat ?
sound frequencies below 16 hertz are usually referred to by scientists as:
Why does a water pump becomes ineffective, when water ha to be raised through a height grater than 30 ft. ?
What is the role of a transformer in a rectifier?
What is a synthesizer?
What do you know about the Fluorescent Tube?
Why it is more difficult to stop a cricket ball than a tennis ball moving with same velocity ?
How do you magnetize metal?
Explain the use of galvanometer?