A body of mass 500 g has a kinetic energy of 400 J. What is its momentum?

A moving body weighing 400 N possesses 500 J of kinetic energy. Calculate the velocity of the body.[g=10 ms^-2]

When does a force do work?

A ball of mass 200 g falls from a height of 5 m. (g =9.8 ms^-2) 

Kinetic energy of the ball _____ 

Name a lens which always forms a virtual, erect and diminished image

Our ears are sensitive to a range of frequency

A person holds a bucket by applying a 10 N force. He then moves a horizontal distance of 5 m and climbs up a vertical distance of 10 m. Find out the total work done by him? Take g = 10 N/kg.

A coin is placed at a depth 4 cm in water. When we see it from air it appears to be at a depth of __________ (µ= 4/3)

Radius of curvature of convex mirror is  60cm,then the focal length of convex mirror is ___________ 

The electromagnetic radiation which doesn’t not affect a photographic plate is

Center of gravity of triangular lamina is  

The condition for reflection of sound wave is the size of reflecting surface must be _________ 

A person having myopic eyes uses a concave lens of focal length 50cm.What is the power of the lens?

The correct form of SI unit of moment of force is _______ 

Name electromagnetic radiation that can pass through a quartz prism

kWh is used to measure

When a ray of white light falls on the side of a glass prism, it suffers dispersion _____ 

Energy from a compressed spring would be an example of... 

What type of work will be done if the body displaces in the direction opposite to the force applied?

Person A and Person B are both using the same amount of work to lift something. Person A takes half as much time to do it. Who has greater power?

SONAR stands for?

Which of the following factor does not affect the moment of the force?

The minimum distance of reflecting surface to hear the echo distinctly is ____ 

Magnifying glass is a 

Sparkling of diamond is because of ______ 

Single movable pulley is a _______

If a 20kgf load is suspended from a single fixed pulley , the applied effort is _____ 

For M.A = 5 ,there should be ____ pulleys in  the block and _____ pulleys in the tackle.

Unit of M.A is ____ 

If a 500 W lamp is switched on for 1 s, the amount of energy consumed is _____ 

If a weightlifter lifts a barbell of 50 kg , then the work done by the weightlifter is _____

Angle between forces and displacement to get the minimum and maximum work? 

Which of the following is true? 

Energy stored in the core of Earth is _______ 

Which of the following has both rotational and translational Kinetic Energy?

The Potential energy in a body due to its position is called _____  potential energy

For an ideal single fixed pulley ___