Chapter 16: Problem 2231
In which of the following cases a man will not see image greater than himself. (A) convex mirror (B) concave mirror (C) plane mirror (D) none of these
Chapter 16: Problem 2231
In which of the following cases a man will not see image greater than himself. (A) convex mirror (B) concave mirror (C) plane mirror (D) none of these
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Get started for freeA plano convex lens off \(=20 \mathrm{~cm}\) is silvered at plane surface New f will be \(\quad \mathrm{cm}\) (A) 20 (B) 40 (C) 30 (D) 60
A light of wavelength \(320 \mathrm{~nm}\) enters in a medium of refractive index \(1.6\) from the air of refractive index \(1.0\). The new wavelength of light in the medium will be \(\mathrm{nm}\). (A) 520 (B) 400 (C) 320 (D) 200
Which of the following will undergo maximum diffraction ? (A) \(\alpha-\) particle (B) \(\gamma\) -rays (C) radio waves (D) light waves
Light from two coherent Sources of the same amplitude \(\mathrm{A}\) and wavelength \(\lambda\), illuminates the Screen. The intensity of the central maximum is Io. If the sources were incoherent, the intensity at the same point will be (A) \(\left(\mathrm{I}_{0} / 2\right)\) (B) \(\left(\mathrm{I}_{0} / 4\right)\) (C) \(4 \mathrm{I}_{0}\) (D) \(2 \mathrm{I}_{0}\)
It is difficult to see through the fog because (A) light is scattered by the droplets in the fog. (B) fog absorbs light. (C) refractive index of fog is infinity. (D) light suffers total internal refection.
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