BITSAT Practice Test - 10 - JEE MCQ

Energy of photon whose frequency is 10¹²MHz, will be

A photo cell is illuminated by a source of light which is placed at a distance d from cell. If distance becomes d/2, then number of electrons emitted per second will

Three point charges -q, Q and -q are placed at equal distances on a straight line. If total potential energy of the system is zero, then the ratio of Q/q is

Three capacitors of capacitances 1 μF, 2 μF and 4 μF are connected first in a series combination, and then in a parallel combination. The ratio of their equivalent capacitances will be

On a rough horizontal surface, a body of mass 2 kg is given a velocity of 10 m/s. If the coefficient of friction is 0.2 and g=10 m/s², the body will stop after covering a distance of

A black body radiates 20 W at temperature 227^oC. If temperature of the black body is changed to 727^oC then its radiating power will be

Work done in turning a magnet of magnetic moment M by an angle of 90^o from the magnetic meridian is n times the corresponding work done to turn through an angle of 60^o, where n is

A body is projected at such an angle that the horizontal range is three times the greatest height. The angle of projection is

The parametric equations of a curve traced by a projectile on a certain planet with no surrounding are given by :y = (8t-5t²) metre and x = 6t metre, where t is in seconds. The velocity with which the projectile is projected, is

A man is standing on a weighing machine placed in a lift. When stationary his weight is recorded as 40 kg. If the lift is accelerated upwards with an acceleration of 2 m/s², then the weight recorded in the machine will be (g=10m/s²)

In a spectrometer experiment three prisms A, B, C with same angle of prism but of different materials of refractive indices μ A = 1.33 , μ B = 1.55 and μ C = 1.44 are used. The corresponding angles of minimum deviation D A , D B , D C measured will be such that

The linear acceleration of centre of gravity of a ball which rolls down without slipping over an inclined plane with an angle of inclination of 30^o will be

A meter stick is held vertically with one end on the floor and is then allowed to fall. If the end touching the floor is not allowed to slip, the other end will hit the ground with a velocity of (g = 9.8 m/s²)