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If the mass and radius of Earth are reduced to one fourth, the escape velocity will

NETNUST Entry TestPhysicsWork and Energy

If a force of 1 N acts on a body through a distance of 1 m in the direction of force, how much work is done?

NETNUST Entry TestPhysicsWork and Energy

If the speed of an object is doubled, its Kinetic Energy will

NETNUST Entry TestPhysicsWork and Energy

Mechanical energy of an object is the sum of its Potential Energy and __________?

NETNUST Entry TestPhysicsWork and Energy

Two bodies X of mass 4 kg and Y of mass 6 kg have same linear momentum. If the kinetic energy of Y is 48 J then kinetic energy of body X will be?

NETNUST Entry TestPhysicsWork and Energy

From the given options, which one lists the amount of work done from smallest to largest if the displacement is in the right direction?

NETNUST Entry TestPhysicsWork and Energy

All the food that you eat in one day has about the same energy as ____ liter of petrol

NETNUST Entry TestPhysicsWork and Energy

A ball is released from a height $\rm{h}$ above a table. Given that air resistance is negligible and 50% of its kinetic energy is converted to other forms of energy at each bounce, what will be the height reached after the second bounce?

NETNUST Entry TestPhysicsWork and Energy

The escape velocity of a body from the earth is $\rm{V_{e}}$. If the radius of the earth contracts to $\rm{\frac{1}{4}th}$ of its value, keeping the mass of the earth constant, the escape velocity will be

NETNUST Entry TestPhysicsWork and Energy

What is the power of a body if 1 N force is acted upon a body having a constant velocity of 10 $\rm{ms^{-1}}$?

NETNUST Entry TestPhysicsWork and Energy

Which one of the following is not a conservative force?

NETNUST Entry TestPhysicsWork and Energy

A body of mass m moving with velocity v has a kinetic energy K. If its velocity is increased by 25%, what will be the work done in terms of K.E?

NETNUST Entry TestPhysicsWork and Energy

Dimensions of U are (Hint: U stands for absolute potential energy)

NETNUST Entry TestPhysicsWork and Energy

Work will be maximum when the angle between force and displacement is

NETNUST Entry TestPhysicsWork and Energy

A body of mass m moving with velocity v has a kinetic energy K. If its velocity is increased by 25%, what will be the new kinetic energy?

NETNUST Entry TestPhysicsWork and Energy

What is the unit of Power?

NETNUST Entry TestPhysicsWork and Energy

What will be the speed of electron having an energy of $1.82\times10^{-17}$ Joule?

NETNUST Entry TestPhysicsWork and Energy

The escape velocity of a particle of mass m from Earth's surface varies as:

NETNUST Entry TestPhysicsWork and Energy

Escape velocity from surface of Moon as compared to that from Earth surface is:

NETNUST Entry TestPhysicsWork and Energy

A bomb of mass 9 kg explodes into two pieces of mass 3 kg and 6 kg. The velocity of 3 kg mass is 16 m $sec^{-1}$. The K.E of 6 kg mass will be:

NETNUST Entry TestPhysicsWork and Energy

A bullet of mass 100 g is fired with a velocity of 10 m $sec^{-1}$ from a gun of mass 1 kg. The ratio of K.E of bullet to that of gun is:

NETNUST Entry TestPhysicsWork and Energy

The work done by the applied force is equal to the change in K.E. This is known as:

NETNUST Entry TestPhysicsWork and Energy

A rubber ball falling from a height of 5 m rebounds from a hard floor and loses 30% of its energy in the impact. The height of the rebound is:

NETNUST Entry TestPhysicsWork and Energy

When two protons are brought closer potential energy of both of them:

NETNUST Entry TestPhysicsWork and Energy

A body of 3 kg lies on the surface of the table 2 m high. It is moved on the surface of the table by 1 m. The change in potential energy will be:

NETNUST Entry TestPhysicsWork and Energy