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

In following figure shows  A, B , C and D represent test tube each of height 20 cm which are filled with water up to heights of 12 cm, 14 cm, 16cm and 18cm respectively. If a vibrating tuning fork is placed over the mouth if test tube D, a loud sound is heard.

1. Describe the observations with the tubes A, B and C when the vibrating tuning fork is placed over the mouth of these tubes.
2. Give the reason for your observation in each case.
3. State the principle illustrated by the above experiment.

When a troop crosses a suspension bridge, the soldiers are asked to break steps. Explain the reason.

Why are the stringed instruments like guitar provided with a hollow sound box?

How do you tune your radio set to a particular station ? Name the phenomenon involved in doing so and define it.

Name the phenomenon involved in tuning your radio set to a particular station and define it.

When a body vibrates under a periodic force, the vibrations of the body are ______.

A tuning fork of frequency 256 Hz will resonate with another tuning fork of frequency:

The diagram in Fig. shows a three pin plug. Label the three pins.

1. Why is the top pin thicker and longer than the other two?
2. Why are the pins splitted at the ends?

What purpose is served by the terminals of a three way pin plug? Draw a diagram and name the pins.

Draw a labelled diagram of a three pin socket.

The following diagram shows a three pin socket marked as 1, 2 and 3.

1. Identify and write live (L) neutral (N) and earth (E) against the correct number.
2. To which part of the appliance is the terminal 1 connected?
3. To which wire joined to 2 or 3, is the fuse connected?

In following Figure shows two bulbs with switches and fuse connected to mains through a three pin socket by means of a three wires cable. 

1. Label each component - bulb, switch, fuse and socket.
2. Name and state the colour of insulation of each wire 1, 2 and 3.
3. How are the two bulbs joined: in series or in parallel?

What is a superconductor?

A substance has zero resistance below 1 k. What is such a substance called?

Why is soft iron used as the core of the electromagnet in an electric bell?

The incomplete diagram of an electric bell is given in Figure. Draw winding of coil on the core and complete the electric circuit in the diagram.

G-Gong, H-Hammer, A-Armature, C-Core, B-Battery.

Name the three forms of kinetic energy and give one example of each.

Show by a ray diagram that a diverging lens cannot form a real image of an object placed anywhere on its principal axis.

Which characteristic of sound makes it possible to recognize a person by his voice without seeing him?

Two pendulums C and D are suspended from a wire as shown in the figure give below. Pendulum C is made  to oscullate by displaying it from its mean position. It is seen that D also starts oscillating. 

(i) Name the type of oscillation, C will execute.
(ii) Name the type of oscillation, D will execute.
(iii) If the length of D is made equal to C then what difference will you notice in the oscillations of D ?
(iv) What is the name of the phenomenon when the length of D is made equal to C ?