ICSE ICSE Class 7 - CISCE Question Bank Solutions for Physics

State two uses of a plane mirror.

 Fill in the blank. 

Sound is produced when a body ______.

Select the correct alternative : 

Sound travels the fastest in

Describe an experiment to show that each source of sound is a vibrating body.

Name two sources of sound.

How does a musician playing on a flute change the pitch of sound produced by it ?

Explain why you can predict the arrival of a train by placing your ear on the rails without seeing it.

Describe an experiment to estimate the speed of sound in air.

What minimum distance is required between the source of sound and the reflecting surface to hear an echo ? Give reason.

State whether true or false. If false, correct the statement.

The reason for brilliance of diamonds is total internal reflection of light.

Write true or false for a given statement

The S.I. unit of volume is the liter.

Write true or false for a given statement.

A measuring beaker of capacity 200 ml can measure only the volume. 200 ml of a liquid.

Write true or false for a given statement

cm² is a smaller unit of area than m². 

Write true or false for a given statement

The S.I. unit of density is g cm^-3.

Write true or false for a given statement

1 g cm^-3 = 1000 kg m^-3.

Write true or false for a given statement.

The S.I. unit of speed is ms^-1.

Fill in the blank

The volume of an irregular solid is determined by the method of _____

Fill in the blank

The S.I. unit of density is _______

Select the correct alternative 

A metallic piece displaces water of volume 15 ml. The volume of piece is :

Select the correct alternative 

The density of alcohol is 0.8 g cm-3. In S.I. unit, it will be :