What is the difference between a lens and a mirror?
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Explain the Mass and Weight ?
How is radiation emitted from the body?
in one optical instrument, what is the effect of usingtwo converging lenses?
Tell me how are amps and watts related?
What is the longest lasting synthetic periodic element?
why the air temperature drops more on clear nights than on cloudy nights?
Why are cloudy nights usually warmer than clear ones?
How does a sound wave travel in air?
Explain the thermal transformation?
What type(amount) of capacitors are used in fan?
Explain the applications of nmr spectroscopy?
What is refraction of light?