Force — Physics STD 10 — Question

A lens forms the image of an object placed at a distance 15 cm from it, at a distance 60 cm in front of it. Find : the nature of image.

Name one property of waves that do not change when the wave passes from one medium to another.

State two factors on which the velocity of a wave depends.

What is an electromagnet?

A ray of light is normally incident on one face of an equilateral glass prism. Answer the following:
What is the angle of incidence on the first face of the prism?

What is a lever ?

Name a machine to change the point of application of force ?

Name the material commonly used for the manufacturing of solar cells.

The following belong to which class of lever?
Nutcracker

Define wave velocity term in relation to a wave.