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What should be the order of bandgap of an LED, if...

Why are LEDs made of compound semiconductor and not of elemental...

Write two distinct advantages of a reflecting type telescope over a...

Write two points of difference between a compound microscope and an...

In modern microscopes multicomponent lenses are used for both the objective...

Why the image formed at infinity is often considered most suitable...

Find the angle of incidence at face AB so that the...

A ray of light incident on face AB of an equilateral...

Write two points of difference between an interference pattern and...

A ray PQ is incident normally on the face AB of...