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

A meter scale is provided at 10 cm mark and is balanced by suspending 400 g from 0 cm mark (fig.). Calculate the mass of meter scale.

Name the scientist who discovered
 X-rays

Name the scientist who discovered Visible light

Name the scientist who discovered Microwaves 

Name the scientist who discovered radio waves

Name the scientist who discovered Infra-red waves

Name the scientist who discovered Ultraviolet rays

Two waves A and B have wavelength 0.01 Å and 9000 Å respectively.

Name the two waves. compare the speeds of these waves when they travel in vacuum.

The above table shows different parts of the electromagnetic spectrum.
(a)    Identify the parts of the spectrum marked as A, B, C and D.
(b)    Which of the radiations A or B has the higher frequency?
(c)    State two properties which are common to all parts of the electromagnetic spectrum.
(d)    Name one source of each of the radiation of electromagnetic spectrum.
(e)    Name one detector for each of the radiation.
(f)    Name one use of each of the radiation.

1. 1. Calculate the speed of the wave.
   2. Name the medium through which it is traveling.

State whether the moment of force is a scalar or vector quantity?

State two factors affecting the turning effect of a force.

Write the expression for the moment of force about a given axis.

A jack screw is provided with a long arm. Explain why?