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

A conductor is moved in a varying magnetic field. Name the law which determines the direction of current induced in the conductor.

What is Lenz’s law?

Why does it become more difficult to move a magnet towards a coil when the number of turns in the coil has been increased?

The direction of induced current is obtained by ______.

How is the boiling point of water affected when some salt is added to it?

It is difficult to cook vegetables on hills and mountains. Explain the reason.

A pressure cooker is based on the principle that boiling point of water increases with the ______.

The boiling point of water is defined as ______.

A man playing a flute is able to produce notes of different frequencies. If he closes the holes near his mouth, will the pitch of the note produced, increase or decrease? Give a reason.

Two waves of the same pitch have amplitudes in the ratio 1 : 3. What will be the ratio of their : 
(i) intensities and
(ii) frequencies

It is observed that during march-past we hear a base drum distinctly from a distance compared to the side drums.
(i) Name the characteristics of sound associated with the above obervation.
(ii) Give a reason for the above observation.

Explain the following and illustrate your answer by drawing appropriate diagram:
Frequency

Explain the following and illustrate your answer by drawing appropriate diagram:

Loudness

Explain the following and illustrate your answer by drawing appropriate diagram:

Pitch

Explain the following and illustrate your answer by drawing appropriate diagram:

Quality of a musical note.

Name musical instrument, one in each case, which produces its notes by using the following. In each case state the method used to produce notes of different pitches and loudness.
(a) A vibrating string.
(b) A vibrating column air.
(c) Vibration of any other body.

Give scientific reason for the following:
When a nail is hammering appears to get higher and higher in pitch.

Give scientific reason for the following: 

Windows sometimes rattle when the low notes of a pipe organ are sounded.