ICSE ICSE Class 7 - CISCE Question Bank Solutions for Physics

Name the mode of transfer of heat in the following :
(a) solid,
(b) liquid,
(c) gas
(d) vacuum

State two properties of a bar magnet ?

How will you test whether a given rod is a magnet or not ?

How will you test whether a given rod is made of iron or not?

You are given two similar bars. One is a magnet and the other is of soft iron. How will you distinguish and identify them ?

What is a longitudinal wave ?

You are given a magnet. How will you use it to find north-south direction at a place?

Describe a simple experiment to illustrate that like poles of two magnets repel each other while the unlike poles attract ?

“Poles exist in pair”. Comment on this statement ?

Define time period.

Write the audible range of frequency for the normal human ear.

What are ultrasonics? Can you hear the ultrasonic sound?

What are infrasonics? Can you hear them?

How does a bat make use of ultrasonics waves to find its way?

What is a magnetic compass ? State its use.

Name the two characteristics of sound which differentiate two sounds from each other.

Explain the meaning of the term magnetic field ?

On what factor does the loudness of a sound depend ?

How does the loudness of sound produced depend on the vibrating area of the body ?

State the factors on which the pitch of a sound depends.