Force, Work, Energy and Power — Physics STD 10 — Question

Show the path of a ray of light when it travels from air into water, the angle of incidence being 30°. Mark the angle of incidence and the corresponding angle of refraction.

State the condition of the following:
A ray passes undeviated through the lens.

Name two factors on which the specific resistance of a wire depends?

State the energy changes which take place when:
A body thrown vertically upwards from the ground.

(a) Define critical angle.
(b) State one important factor which affects the critical angle of a given medium.

What is the position of the centre of gravity of a cylinder?

Define angle of deviation.

A candle is placed between f and 2f a convex lens. Draw a ray diagram showing the position of the image.

Write down a relationship to convert temperature on the Fahrenheit to Celsius scale.

What is a centripetal force?