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

Why is the colour red used as a sign of danger?

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

Two forces each of 5N act vertically upwards and downwards respectively on the two ends of a uniform metre rule which is placed at its mid-point as shown in the diagram. Determine the magnitude of the resultant moment of these forces about the midpoint.

Draw a diagram to show how a single pulley can be used so as to have its ideal M.A= 2.

Derive a relationship between S.I. and C.C.S. unit of work

A force acts on a body and displaces it by a distance S in a direction at an angle θ with the direction of the force. What should be the value of θ to get the maximum positive work?

Define work.

Define the term energy.

State the S.I. unit of energy.

What are the two kinds of mechanical energy?

Give one example in the case where the force is of contact.

Give one example in the case where Force is at a distance.

A ball is hanging by a thread from the ceiling of the roof. Draw a neat labelled diagram showing the forces acting on the ball and the string

A spring is compressed against a rigid wall. Draw a neat and labelled diagram showing the forces acting on the spring.

The separation between two masses is reduced to half. How is the magnitude of the gravitational force between them affected?

Define the term Force?

State the effects of a force applied on a non-rigid and a rigid body. How does the effect of the force differ in the two cases?

Give one example in the given cases:

A force stops a moving body

Give one example in the given cases:-

A force moves a stationary body

Give one example in the given cases:-

A force changes the size of a body