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

A particular resistance wire has a resistance of 3·0 ohm per metre. Find the resistance of 5 m length of a wire of the same material, but with twice the area of cross section.

Water boils at 120°C in a pressure cooker. Explain the reason.

Copy the diagram given below and complete the path of the light ray till it emerges out of the prism. The critical angle of glass is 42°. In your diagram mark the angles wherever necessary.

A ray of light XY passes through a right-angled isosceles prism as shown below

1. What is the angle through which the incident ray deviates and emerges out of the prism?
2. Name the instrument where this action of the prism is put into use.
3. Which prism surface will behave as a mirror?

What determines the pitch of a sound?

Draw a diagram to show the wave pattern of high pitch note and a low pitch note, but of the same loudness.

Name the subjective property of sound related to its frequency.

Name and define the characteristic which enables one to distinguish two sounds of same loudness, but of different frequencies, given by the same instrument.

How is it possible to detect the filling of a bottle under a water tap by hearing the sound at a distance?

The pitch of sound increases if its frequency ______.

If the amplitude of a sound is halved, its loudness becomes ______.

Name the characteristic which enables one to distinguish the sound of two musical instruments even if they are of the same pitch and same loudness.

State the factor that determine the pitch of a note.

Name the characteristic of the sound affected due to a change in its frequency.

Two sounds A and B are of same amplitude, same wave forms but of frequencies f and 2f respectively. Then ______.

A bulb is connected to a battery of p.d 4 V and internal resistance 2.5 Ω. A steady current of 0.5 A flows through the circuit. Calculate:

1. the total energy supplied by the battery in 10 minutes
2. the resistance of the bulb and
3. the energy dissipated in the bulb in 10 minutes.

A bulb is connected to a battery of p.d 4 V and internal resistance 2.5 Ω. A steady current of 0.5 A flows through the circuit. Calculate:

1. the total energy supplied by the battery in 10 minutes
2. the resistance of the bulb and
3. the energy dissipated in the bulb in 10 minutes.

What is a total reflecting prism?

Show with the help of a diagram how a total reflecting prism can be used to turn a ray of light through 90°. Name one instrument in which such a prism is used. 

In the following figure, a ray of light PQ is incident normally on the hypotenuse of an isosceles right angle prism ABC.

1. Complete the path of the ray PQ till it emerges from the prism. Mark in the diagram the angle wherever necessary.
2. What is the angle of deviation of the ray PQ?
3. Name a device in which this action is used.