Simple Micros...

Simple Microscope Angular Magnification

Trending Questions

Q. A lady uses

+ 1.5 D

glasses to have normal vision from

25 c m

onwards. She uses a

20 D

lens as a simple microscope to see an object. The maximum magnifying powers if she uses the microscope (a) together with the glasses and (b) without the glasses are

6, 6
6, 9
9, 6
9, 9

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Q. A parallel plate capacitor with square plates is filled with four dielectrics of dielectric constants

K_{1}, K_{2}, K_{3}, K_{4}

arranged as shown in the figure. The effective dielectric constant

K

will be

$K = \frac{(K_{1} + K_{4}) (K_{2} + K_{3})}{2 (K_{1} + K_{2} + K_{3} + K_{4})}$
$K = \frac{(K_{1} + K_{2}) (K_{3} + K_{4})}{K_{1} + K_{2} + K_{3} + K_{4}}$
$K = \frac{(K_{1} + K_{3}) (K_{2} + K_{4})}{K_{1} + K_{2} + K_{3} + K_{4}}$
$K = \frac{(K_{1} + K_{2}) (K_{3} + K_{4})}{2 (K_{1} + K_{2} + K_{3} + K_{4})}$

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Q. The magnifying power of a simple microscope can be increased if we use eye-piece of

higher focal length
smaller focal length
higher diameter
smaller diameter

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