Physics

Q221

A lens which converges a beam of parallel rays to a point is called______________?

Q222

A photon is________________?

Q223

A photon of wavelength 900nm behaves like a particle of mass______________?

Q224

A point where parallel rays converge or appear to diverge is called______________?

Q225

A three-dimensional image is obtained by________________?

Q229

Acceptor and donor impurities donate______________?

Q230

According to Pascal law pressure is_____________?

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