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

A continuous disturbance is created on the surface of water in a ripple tank with a small piece of cork floating on it. Describe the motion of the cork. What does the motion of the cork tell about the disturbance?

Draw a displacement-time graph for water wave.

State the formula for calculating percentage error

200 waves pass through a point in one second. Calculate the time period of wave.

A bat emits an ultrasonic sound of frequency 0.25 MHz. Calculate the time in which one vibration is completed.

State the factors which determine the number of significant figures for the calculation of the final result of an experiment.

The wavelength of the vibrations produced on the surface of water is 2 cm. If the wave velocity is 16 ms^-1, calculate:

1. no. of waves produced in one second
2. time required to produce one wave.

A continuous progressive transverse wave of frequency 8 Hz moves across the surface of a ripple tank

With reference to the frequency, describe the movement of water on the surface

A continuous progressive transverse wave of frequency 8 Hz moves across the surface of a ripple tank

If the wavelength of the transverse wave is 32 mm, calculate the speed with which wave travels across the surface of the water.

A thin metal plate is placed against the teeth of cog wheel. Cog wheel is rotated at a speed of 120 rotations per minute and has 160 teeth. Calculate:

1. frequency of node produced.
2. speed of sound, if wavelength is 1.05 m.
3. what will be the effect when the speed of cog wheel is doubled?

A sound wave of wavelength 1/3 m has a frequency 996 Hz. Keeping the medium same, if frequency changes to 1328 Hz. Calculate

1. velcoity of sound
2. new wavelength.

Two tuning forks A and B of frequencies 256 Hz and 192 Hz respectively are vibrated in air. If the wavelength of A is 1.25 m, calculate the wavelength produced by B.

The distance between one crest and one trough of a sea wave is 4.5 m. If the waves are produced at the rate of 240/min, calculate the time period.

The distance between one crest and one trough of a sea wave is 4.5 m. If the waves are produced at the rate of 240/min, calculate the wave velocity.

The distance between three consecutive crests of wave is 60 cm. If the waves are produced at the rate of 180/ min, calculate:

1. wavelength
2. time period
3. wave velocity.

The diagram given below shows a displacement distance graph of a wave. If the velocity of wave is 160 ms-1, calculate:

1. wavelength
2. frequency
3. amplitude.

From diagram given below calculate:

1. velocity of P and Q
2. frequency of P, when frequency of Q is 512 Hz.

Assume that both wave are traveling in same medium.

What do you understand by the term volume of substance?

Select the correct option:

The substance which form a strong temporary magnet is:

Select the correct option:

The place around a magnet where its influence can be detected is called: