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

State the function of the following in a house circuiting kWh meter.

In what unit does the electric meter in a house measure the electrical energy consumed? What is its value in S.I unit?

Where is the main fuse in a house circuit connected?

How should the several electric lamps be connected with the mains so that the switching on or off a lamp has no effect on the operation of other lamps?

Two sets A and B of four bulbs each are glowing in two separate rooms. When one of the bulbs in set A is fused, the other three bulbs also cease to glow. But in set B, when one bulb fuses, the other bulbs continue to glow. Explain the difference in the two sets.

The electric meter in a house records the consumption of ______.

Draw a diagram showing the directions of three magnetic field lines due to a straight wire carrying current. Also show the direction of current in the wire.

How is the magnetic field due to a straight current carrying wire affected if current in wire is decreased?

How is the magnetic field due to a straight current carrying wire affected if current in wire is reversed?

A ray of light A incident from air suffers partial reflection and refraction at the boundary of water. 

1. Complete the diagram showing (i) the reflected ray B and (ii) the refracted ray C.
2. How are the angles of incidence i and refraction r related?

A small air bubble in a glass block when seen from above appears to be raised because of ______.

Define couple. 

Define the moment of force.

Give an example for each of the following uses of a machine:

to change the point of application of force

Give an example of the following uses of a machine:

 to change the direction of force

One joule is the amount of work done when a force of ......... moves a body through a distance of .......

What is the work done when no net force is applied on the body?