What is the effect of using two converging lenses in one optical instrument?
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explian construction and working of various dye lasers
Why does heated air expand?
What is the principle of superposition?
Explain the Heterogenous ?
Explain what is relation between magnetic and electricity and why?
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if 100W and 200W bulbs are connected in series to a supply which bulb will glow brighter and why
How do fireworks turn into shapes like hearts and stars?
How is specific gravity defined?
The most abundant metal in the atmosphere?
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Why land breeze is caused ?