Ray Optics and Optical Instruments

Related Questions

• The angular magnification of a simple microscope can be increased by increasing

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• Light takes 8 min 20 sec to reach from sun on the earth. If the whole atmosphere is filled with water, the light will take the time ($_{a}{{\mu }_{w}}=4/3$)

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• The focal lengths of the objective and eye-lens of a microscope are 1 cm and 5 cm respectively. If the magnifying power for the relaxed eye is 45, then the length of the tube is

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• A convex lens of focal length $f$ is placed somewhere in between an object and a screen. The distance between the object and the screen is $x$. If the numerical value of the magnification produced by the lens is $m,$, then the focal length of the lens is

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• A convex mirror has a focal length $f$. A real object is placed at a distance $f$ in front of it from the pole produces an image at

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