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

Write an expression for the magnifying power of a simple microscope. How can it be increased?

1 kg of ice at 0°C is heated at a constant rate and its temperature is recorded after every 30 s till steam is formed at 100°C. Draw a temperature-time graph to represent the change of phases.

State two uses of magnifying glass.

State Faraday's laws of electromagnetic induction.

State Lenz’s Law.

An enemy plane is at a distance of 300 km from a radar. In how much time the radar will be able to detect the plane? Take velocity of radio waves as 3 x 10⁸ ms^-1

Name the factor that determines Loudness of the sound heard.

Name the factor that determines Quality of the note

Name the factor that determines Pitch of the note.

Name the phenomenon that causes a loud sound when the stem of a vibrating tuning fork is kept pressed on the surface of a table.

The ratio of amplitude of two waves is 3:4. What is the ratio of their loudness?

The ratio of the amplitude of two waves is 3:4. What is the ratio of their Frequencies?

What is an echo

State two conditions for an echo to take place

What do you understand by the loudness of sound?

In which units is the loudness of sound measured?

State the safe limit of sound level in terms of decibel for human hearing.

A person standing between two vertical cliffs and 480 m from the nearest cliff shouts. He hears the first echo after 3s and the second echo 2s later. Calculate:

1)The speed of sound.

2) The distance of the other cliff from the person

Name one property of waves that do not change when the wave passes from one medium to another.

State one important property of waves used for echo depth sounding.