Chapter 16: Problem 2267
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
Chapter 16: Problem 2267
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
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Get started for freeA plane polarized light is incident normally on the tourmaline plate. its \(\mathrm{E}^{\rightarrow}\) vectors make an angle of \(45^{\circ}\) with the optical axis of the plate. find the percentage difference between initial and final maximum values of \(\mathrm{E}^{\rightarrow}\) vectors. (A) \(19 \%\) (B) \(92 \%\) (C) \(50 \%\) (D) \(29 \%\)
The ratio of intensities of rays emitted from two different coherent Sourees is \(\alpha .\) For the interference pattern by them, $\left[\left(I_{\max }+I_{\min }\right) /\left(I_{\max }-I_{\min }\right)\right]$ will be equal to (A) \(\\{(1+\sqrt{\alpha}) / 2 \alpha\\}\) (B) \(\\{(1+\alpha) / 2 \alpha\\}\) (C) \(\\{(1+\sqrt{\alpha}) / 2\\}\) (D) \(\\{(1+\alpha) /(2 \sqrt{\alpha})\\}\)
A Sound wave travels from air to water. The angle of incidence is \(\alpha_{1}\) and the angle of reflection is \(\alpha_{2}\) If the snell's Law is valid then, (A) \(\alpha_{1} \geq \alpha_{2}\) (B) \(\alpha_{1}=\alpha_{2}\) (C) \(\alpha_{1}>\alpha_{2}\) (D) \(\alpha_{1}<\alpha_{2}\)
A concave mirror of focal length \(20 \mathrm{~cm}\) forms an virtual image having twice the linear dimensions of the object, the position of the object will be \(\mathrm{cm}\) (A) \(7.5\) (B) \(-10\) (C) 10 (D) \(-7.5\)
Two beams of Light of intensity \(\mathrm{I}_{1}\) and \(\mathrm{I}_{2}\) interfere to give an interference pattern. If the ratio of maximum intensity to that of minimum intensity is \((16 / 4)\) then $\left(\mathrm{I}_{1} / \mathrm{I}_{2}\right)=$ (A) \(1: 9\) (B) \(1: 4\) (C) \(4: 1\) (D) \(9: 1\)
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