An iron rod connects the opposite sides of a circular iron ring. If the system is equally heated will the ring remain circular? Explain mathematically.

An iron rod connects the opposite points of a circular iron ring. If the system is equally heated, will the ring remain circular? Explain.

An iron rod is fitted along the diameter of a circular iron ring. Explain, whether the ring remains circular or not, when the system is heated.

An iron sphere is to be passed through a circular brass ring. At 20^(@)C , the diameter of the sphere is 25 cm and the internal diameter of the ring is 24.9 cm. If both the sphere and the ring are heated together, at what temperature will the sphere just pass through the ring? alpha for iron =1.2 times 10^(-5@)C^(-1) and alpha for brass =2times10^(-5@)C^(-1) .

If a circular iron-plate of thickness (1)/(150) cm is made from an iron-sphere of diameter 1 cm , then what will be the radius of the circular plate gt?

A particle is moving in a circular path of radius r with constant speed. Due to change in the direction of motion of the particle continously, the velocity of the particle is changing . But the kinetic energy of the particle remains the same. Explain why ?

A and B are two points on a circular ring made of uniform wire of resistane R. If the part AB of the ring subtends an angle theta at the centre C of the ring as shown below, find the resistance of the ring between the points A and B.

The diameter of an iron sphere and the length of the side of an iron cube are equal. Initially they are at the same temperature. If they take the same amount of heat, whose final temperature will be higher?