Mass defect of an atom refers to - Tardigrade

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

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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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