(English Medium) ICSE Class 9 - CISCE Question Bank Solutions for Physics

Which wave property determines (a) loudness, (b) pitch?

What are wavelength, frequency, time period and amplitude of a sound wave?

Guess which sound has a higher pitch: guitar or car horn?

Calculate the wavelength of a sound wave whose frequency is 220 Hz and speed is 440 m/s in a given medium.

A person is listening to a tone of 500 Hz sitting at a distance of 450 m from the source of the sound. What is the time interval between successive compressions from the source?

Distinguish between loudness and intensity of sound.

Which characteristics of the sound helps you to identify your friend by his voice while sitting with others in a dark room?

The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?

What is loudness of sound? What factors does it depend on?

What is meant by measurement?

Define Standard metre.

Name two units of length which are bigger than a metre. How are they related of the metre?

How is nanometer related to Angstrom?

Complete the following: 1 light year =……….m

Complete the following: 1 m =……….Å

Complete the following: 1 m  =……….. µ

Complete the following: 1 micron =………..Å

Complete the following: 1 fermi = ……….. m

Complete the following: 1 g =………kg

Complete the following : 1 mg =………kg