(English Medium) ICSE Class 10 - CISCE Question Bank Solutions for Physics

What is the velocity ratio of a single fixed pulley?

In a single fixed pulley, if the effort moves by a distance x downwards, by what height is the load raised upwards?

Draw a circuit diagram using the dual control switches to light a staircase electric light and explain its working.

Name a machine which is used to change the direction for force applied.

The velocity ratio of a single fixed pulley is always more than 1.

A single fixed pulley is used because it ______.

When an arrow is shot from a bow, it has kinetic energy in it. Explain briefly from where does it get its kinetic energy?

The kinetic energy of a body is the energy by virtue of its ______.

If the speed of a car is halved, how does its kinetic energy change?

Two bodies of equal masses are moving with uniform velocities v and 2v. Find the ratio of their kinetic energies.

A cannon ball of mass 500 g is fired with a speed of 15 m s^-1. Find:

1. its kinetic energy.
2. its momentum.

A bullet of mass 50 g is moving with a velocity of 500 m s⁻¹. It penetrated 10 cm into a still target and comes to rest. Calculate:

1. the kinetic energy possessed by the bullet, and
2. the average retarding force offered by the target.

A body of mass 10 kg is moving with a velocity 20 m s^-1. If the mass of the body is doubled and its velocity is halved, find:

1. the initial kinetic energy, and
2. the final kinetic energy.

A truck weighing 1000 kgf changes its speed from 36 km h^-1 to 72 km h^-1 in 2 minutes. Calculate:

1. the work done by the engine and
2. its power (g = 10 m s^-2)

A body of mass 60 kg has the momentum 3000 kg m s^-1. Calculate:

1. the kinetic energy.
2. the speed of the body.

How much work is needed to be done on a ball of mass 50 g to give it a momentum of 5 kg cm s^-1?

A body is thrown vertically upwards. Its velocity keeps on decreasing. What happens to its kinetic energy as its velocity becomes zero?

A body falls freely under gravity from rest. Name the kind of energy it will possess on reaching the ground.

Two bodies have masses in the ratio 5 : 1 and their kinetic energies are in the ratio 125 : 9. Calculate the ratio of their velocities.

A uniform meter scale is in equilibrium as shown in the diagram : 

(i) Calculate the weight of the meter scale.
(ii) Which of the following options is correct to keep the ruler in equilibrium when 40 gf wt is shifted to 0 cm mark ?
F is shifted towards 0 cm
or
F is shifted towards 100 cm