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Chapter 16: Problem 2253
Which of the following colors is scattered minimum? (A) Violet (B) red (C) blue (D) yellow
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The magnifying power of objective of a compound microscope is \(5.0\) If the magnifying power of microscope is 30 , then magnifying power of eye-piece will be (A) 3 (B) 6 (C) 9 (D) 12
The light waves from two coherent sources of same intensity interfere each other. Then what will be maxima intensity when minimum intensity is zero ? (A) \(4 \mathrm{I}\) (B) I (C) \(4 \mathrm{I}^{2}\) (D) \(\mathrm{I}^{2}\)
Mono chromatic light of wavelength \(399 \mathrm{~nm}\) is incident from air on a water \((\mathrm{n}=1.33)\) Surface. The wavelength of refracted light is \(\mathrm{nm}\) (A) 300 (B) \(\overline{600}\) (C) 333 (D) 443
If the refractive index of a material of an equilateral Prism is \(\sqrt{3}\), then angle of minimum deviation will be (A) \(50^{\circ}\) (B) \(60^{\circ}\) (C) \(39^{\circ}\) (D) \(\overline{49^{\circ}}\)
An observer look at a tree of height 10 meters away with a telescope of magnifying power \(10 .\) To him, the tree appears (A) 10 times taller (B) 10 times smaller (C) 10 times nearer (D) 20 times nearer
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