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GK

George K.

Physics 101 Mechanics

3 minutes ago

If two wires having resistance R and 2R. Both joined in series and in parallel then ratio of heat generated in this situation, applying the same voltage,

GK

George K.

Physics 101 Mechanics

4 minutes ago

The heat produced by a 100 watt heater in 2 minute will be equal to

GK

George K.

Physics 101 Mechanics

7 minutes ago

The mass of two substances are 4gm and 9gm respectively. If their kinetic energies are same, then the ratio of their momenta will be (a) 4 : 9 (b) 9 : 4 (c) 3 : 2 (d) 2 : 3

GK

George K.

Physics 101 Mechanics

7 minutes ago

If momentum is increased by 20%, then K.E. increases by [AFMC 1997; MP PMT 2004] (a) 44% (b) 55% (c) 66% (d) 77%

GK

George K.

Physics 101 Mechanics

8 minutes ago

Two bodies of masses m and 2m have same momentum. Their respective kinetic energies 1 E and 2 E are in the ratio

GK

George K.

Physics 101 Mechanics

8 minutes ago

4 kg mass and a 1 kg mass are moving with equal kinetic energies. The ratio of the magnitudes of their linear momenta is[CBSE PMT 1993; Orissa JEE (a) 1 : 2 (b) 1 : 1 (c) 2 : 1 (d) 4 : 1

GK

George K.

Physics 101 Mechanics

8 minutes ago

If the kinetic energy of a body becomes four times of its initial value, then new momentum will [AIIMS 1998; AIIMS 2002; KCET 2000; J & K CET 2004] (a) Becomes twice its initial value (b) Become three times its initial value (c) Become four times its initial value (d) Remains constant

GK

George K.

Physics 101 Mechanics

11 minutes ago

Two bodies A and B having masses in the ratio of 3 : 1 possess the same kinetic energy. The ratio of their linear momenta is then

GK

George K.

Physics 101 Mechanics

11 minutes ago

If velocity of a body is twice of previous velocity, then kinetic energy will become

GK

George K.

Physics 101 Mechanics

11 minutes ago

If the kinetic energy of a body increases by 0.1%, the percent increase of its momentum will be [MP PMT 1994]

GK

George K.

Physics 101 Mechanics

13 minutes ago

Three liquids of densities d, 2d and 3d are mixed in equal volumes. Then the density of the mixture is

GK

George K.

Physics 101 Mechanics

13 minutes ago

The kinetic energy of a body of mass 3 kg and momentum 2 Ns is

GK

George K.

Physics 101 Mechanics

14 minutes ago

Two bodies of masses m and 4 m are moving with equal K.E. The ratio of their linear momentums is

GK

George K.

Physics 101 Mechanics

15 minutes ago

A body moving with velocity v has momentum and kinetic energy numerically equal. What is the value of v

GK

George K.

Physics 101 Mechanics

15 minutes ago

A stationary particle explodes into two particles of a masses m 1 and m2 which move in opposite directions with velocities 1 v and . 2 v The ratio of their kinetic energies E1 / E2 is

GK

George K.

Physics 101 Mechanics

17 minutes ago

If pressure at half the depth of a lake is equal to 2/3 pressure at the bottom of the lake then what is the depth of the lake

GK

George K.

Physics 101 Mechanics

19 minutes ago

In a wire of length L, the increase in its length is l. If the length is reduced to half, the increase in its length will be

GK

George K.

Physics 101 Mechanics

19 minutes ago

Increase in length of a wire is 1 mm when suspended by a weight. If the same weight is suspended on a wire of double its length and double its radius, the increase in length will be

GK

George K.

Physics 101 Mechanics

19 minutes ago

The ratio of diameters of two wires of same material is n : 1. The length of wires are 4 m each. On applying the same load, the increase in length of thin wire will be

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Cassandra L.

Physics 101 Mechanics

21 minutes ago

A non uniform beam is 10.0 m long. One third of the beam has a uniform mass of 50.0 kg. The remaining two thirds of the beam has a uniform mass of 250. kg. Find the center of mass of the beam.

GK

George K.

Physics 101 Mechanics

21 minutes ago

When 1 N force acts on 1 kg body that is able to move freely, the body receives [CPMT 1971] (a) A speed of 1 m/sec (b) An acceleration of 2 1m / sec (c) An acceleration of 2 980 cm / sec (d) An acceleration of 2 1 cm / sec

GK

George K.

Physics 101 Mechanics

21 minutes ago

An inelastic ball is dropped from a height of 100 m. Due to earth, 20% of its energy is lost. To what height the ball will rise [RPMT 1996] (a) 80 m (b) 40 m (c) 60 m (d) 20 m

GK

George K.

Physics 101 Mechanics

21 minutes ago

The quantities remaining constant in a collision are [MP PET 1997] (a) Momentum, kinetic energy and temperature (b) Momentum and kinetic energy but not temperature (c) Momentum and temperature but not kinetic energy (d) Momentum but neither kinetic energy nor temperature

GK

George K.

Physics 101 Mechanics

21 minutes ago

A tennis ball dropped from a height of 2 m rebounds only 1.5 m after hitting the ground. What fraction of its energy is lost in the impact

GK

George K.

Physics 101 Mechanics

21 minutes ago

A force of 5 N acts on a body of weight 9.8 N. What is the acceleration produced in m/sec2 [NCERT 1990] (a) 49.00 (b) 5.00 (c) 1.46 (d) 0.51

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