The magnetic field produced by a current carrying conductor is shown below. Is there a similar magnetic field produced around a thin beam of moving α-particles and neutrons? Justify your answer.

What do you understand by the following statements?

(a) The heat capacity of the body is 60 JK^-1.

(b) The specific heat capacity of lead is 130 Jkg^-1K^-1

An narrow beam of white light is incident on three glass objects as shown below. Comment on the nature of behaviour of the emergent beam in all three cases.

A diver in water looks obliquely at an object AB in air.

(i) Does the object appear taller, shorter or of the same size to the diver?

(ii) Show the path of two rays AC & AD starting from the tip of the object as it travels towards the diver in water and hence obtain the image of the object.