The escape velocity of a body projected vertically upwards from the earth’s surface is 11.2 km/sec. If the body is projected in a direction making 30° angle to the vertical, its escape velocity in this case will be

Questions from UP CPMT 2007

1. Path of cathode rays entering uniform magnetic field normal to the field

2. Einstein’s photoelectric equation based upon law of conservation of

3. Angle between vectors and is

4. Two bodies of different masses are dropped from a tower, assuming that air resistance is proportional to the mass of body. Which of the following is correct?

5. A man will weigh more when

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

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

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3. 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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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. A barometer is constructed using a liquid (density What would be the height of the liquid column, when a mercury barometer reads ?
(density of mercury

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