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

Explain the motion of a planet around the sun in an elliptical path.

A water pond appears to be 3 m deep. If the refractive index of water is 4/3, find the actual depth of the pond.

A coin is placed at the bottom of a beaker containing water (refractive index = 4/3) at a depth of 16 cm. By what height the coin appears to be raised when seen from vertically above?

What is the colour code for the insulation on the earth wire?

What is the colour code for the insulation on the neutral?

Name the colour code of the wire which is connected to switch for the appliance. 

A power circuit uses a cable having three different wires. Between which of the two wires should the heating element of an electric geyser be connected?

A power circuit uses a cable having three different wires. To which wire should the metallic case of the geyser be connected?

A power circuit uses a cable having three different wires. To which wire should the switch and fuse be connected?

The mass number and atomic number of an element are not changed when it emits ______.

Jatin puts a pencil into a glass container having water and is surprised to see the pencil in a different state.

1. What change is observed in the appearance of the pencil?
2. Name the phenomenon responsible for the change.
3. Draw a ray diagram showing how the eye sees the pencil.

Name the form of energy stored in a wound up spring of a watch.

Is centrifugal force a real force?

What is meant by resonance?

State the condition for the occurrence of resonance.

Give two characteristic of a high tension wire.

Which of the cables, one rated 5 A and the other 15 A will be of thicker wire? Give a reason for your answer.

Draw a labelled diagram of a D.C. motor showing its main parts.

What energy conversion does take place during the working of a d.c. motor?

State two ways by which the speed of rotation of an electric motor can be increased.