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

A lens of power +2·5D is kept in contact with another lens of power -2·5D. Draw the path of a ray passing through the lens combination.

Explain the meaning of the term terminal voltage of a cell.

State the principle of an electric motor.

What is electromagnetic induction?

At what voltage is this current available to our household?

What happens to the resistivity of semiconductor with the increase of temperature?

A cell of Emf 2 V and internal resistance 1.2 Ω is connected with an ammeter of resistance 0.8 Ω and two resistors of 4.5 Ω and 9 Ω as shown in the diagram below:

1) What would be the reading on the Ammeter?

2) What is the potential difference across the terminals of the cell?

Calculate the change in the Kinetic energy of a moving body if its velocity is reduced to 1/3rd of the initial velocity.

State the energy change in the following device while in use:
A loudspeaker

State the energy change in the following device while in use:

A glowing electric bulb.

What is nuclear energy?

Name the process used for producing electricity using nuclear energy.

State one important advantage and disadvantage each of using nuclear energy for producing electricity.

(i) The conversion of part of the energy into an undesirable form is called ______________.
(ii) For a given height h, __________________ the length l of the inclined plane, lesser will be the effort required.

Name a common device that uses electromagnets.

A body of mass m falls down through a height h. Obtain an expression for the work done by the force of gravity.

A boy of mass m climbs up a staircase of vertical height h.
(a) What is the work done by the boy against the force of gravity?
(b) What would have been the work done if he uses a lift in climbing the same vertical height?

Name the physical quantity measured in terms of horse power.

Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:

A moving cricket ball

Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:

A compressed spring