(English Medium) ICSE Class 10 - CISCE Important Questions for Physics

How is work done by a force measured when the force is in an angle to the direction of displacement?

Rajan exerts a force of 150 N in pulling a cart at a constant speed of 10 m/s^-1. Calculate the power exerted.

Give the expression for mechanical advantage of an inclined plane in terms of the length of an inclined plane.

Name a common device where a gear train is used

Name a common device where a gear train is used

Draw a simplified diagram of a lemon crusher, indicting of load and effort

Explain briefly why the work done by a fielder when he takes a catch in a cricket match is negative.

Explain briefly why the work done by a fielder when he takes a catch in a cricket match is negative.

A metallic ball is hanging by a string from a fixed support. Draw a neat labelled diagram showing the forces acting on the ball and the string.

When does a force do work?

What is the work done by the moon when it revolves around the earth?

What is the work done by the moon when it revolves around the earth?

Calculate the change in the Kinetic energy of a moving body if its velocity is reduced to 1/3rd of the initial velocity.

State the energy change in the following device while in use:
A loudspeaker

State the energy change in the following device while in use:

A glowing electric bulb.

What is nuclear energy?

Name the process used for producing electricity using nuclear energy.

State one important advantage and disadvantage each of using nuclear energy for producing electricity.

(i) The conversion of part of the energy into an undesirable form is called ______________.
(ii) For a given height h, __________________ the length l of the inclined plane, lesser will be the effort required.

An electron emitter must have _____________ work function and ___________ melting point.