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Chapter 16: Problem 2219
A Plane mirror produces a magnification of (A) 0 (B) \(+1\) (C) \(-1\) (D) \(\infty\)
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The two coherent sources of intensity ratio \(\beta\) produce interference. The fringe visibility will be (A) \(2 \beta\) (B) \((\beta / 2)\) (C) \(\\{\sqrt{\beta} /(1+\beta)\\}\) (D) \(\\{(2 \sqrt{\beta}) /(1+\beta)\\}\)
Wave light travels from an optically rarer medium to an optically denser medium its velocity decrease because of change in (A) frequency (B) wavelength (C) amplitude (D) phase
To get five images of a single object one should have two plane mirrors at an angle of (A) \(36^{\circ}\) (B) \(72^{\circ}\) (C) \(80^{\circ}\) (D) \(302^{\circ}\)
In a thin prism of glass \(\left(a_{(n) g}=1.5\right)\) which of the following relation between the angle of minimum deviation \(\delta_{\mathrm{m}}\) and the angle of refraction \(\mathrm{r}\) will be correct? (A) \(\delta_{\mathrm{m}}=(\mathrm{r} / 2)\) (B) \(\left(\delta_{\mathrm{m}} / 2\right)=\mathrm{r}\) (C) \(\delta_{\mathrm{m}}=1.5 \mathrm{r}\) (D) \(\delta_{\mathrm{m}}=\mathrm{r}\)
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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