An optical medium has refractive index 2.0. The value of speed of light in that medium is approximately equal to

Questions from KCET 2022

1. 6. An ideal heat engine gives out heat at to have a of efficiency. The temperature of the source is

2. In an auditorium absorption co‐efficient of an open window is

3. The equations of two sound waves are given by and . The ratio of the intensities of sound produced in the medium is

4. Mass defect of an atom refers to

5. An optical medium has refractive index . The value of speed of light in that medium is approximately equal to

Physics Most Viewed Questions

1. A car starts from rest and accelerates at At , a ball is dropped out of a window by a person sitting in the car. What is the velocity and acceleration of the ball at ? (Take

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2. The de Broglie wavelength of an electron moving with kinetic energy of is nearly

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3. If and respectively denote energy and gravitational constant, then has the dimensions of:

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4. A wheel with metallic spokes each long is rotated with a speed of in a plane perpendicular to a magnetic field of . The induced emf between the axle and rim of the wheel will be,

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5. Calculate the acceleration of the block and trolly system shown in the figure The coefficient of kinetic friction between the trolly and the surface is , mass of the string is negligible and no other friction exists

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