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

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

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

A moving bus

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

A stretched wire

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

An arrow shot out of a bow.

Name the device used to protect the electric circuits from over loading and short circuit. On what effect of current does it work?

A fuse is always connected in the live wire of the circuit. Explain the reason.

Name two factors on which the internal resistance of a cell depends and state how does it depend on the factors stated by you.

A cell of e.m.f ε and internal resistance r is used to send current to an external resistance R. Write expressions for

1. the total resistance of circuit.
2. the current drawn from the cell.
3. the p.d. across the cell.
4. voltage drop inside the cell.