Ray Optics and Optical Instruments

Related Questions

• A man runs towards a mirror at a speed 15 m/s The speed of the image relative to the man is

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• Electromagnetic radiation of frequency $n$, wavelength $\lambda $, travelling with velocity v in air, enters a glass slab of refractive index $\mu $. The frequency, wavelength and velocity of light in the glass slab will be respectively

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• To increase the magnifying power of telescope ($f_o$ = focal length of the objective and $f_e$ = focal length of the eye lens)

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• How much water should be filled in a container 21 cm in height, so that it appears half filled when viewed from the top of the container (given that $_{a}{{\mu }_{\omega }}=4/3$)

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• A man having height 6 m. He observes image of 2 m height erect, then mirror used is

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