What is photometry?
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Why is one?s breath visible in cold, but not in not in hot weather ?
the resolutions of a michelson interferometer operating with a light source of 640nm wavelenth is A.1280nm B.640nm C.80 nm D.1nm
Why is flywheel used in motor cars ?
explian construction and working of various dye lasers
Why do the front wheels of a motor car usually lean outwards ?
How current passes through a capacitor in ac and dc circuits?
If a body is hung from a spring balance first at the poles and then at the Equator, why do the readings of the balance change ?
Why is diamond so bright ?
Does water drain counterclockwise in the northern hemisphere and clockwise in the southern hemisphere?
Explain Conductors ?
Describe the Working of the Transistor?
Describe the Infra-red and Ultra-voilet rays?