An iron ring is heated uniformly. Which of the following will be affected?

Internal diameter

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External diameter

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Mass

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None of these

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Solution

The correct option is A
Internal diameter

On uniform heating, the ring will expand in all directions. Every dimension of the object will undergo a linear expansion. There is no effect on mass of the body on heating.

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Similar questions

Q. An iron ring measuring

15.00 c m

in diameter is to be shrunk on a pulley which is

15.05 c m

in diameter. All measurements refer to the room temperature

20^{\circ} C

. To what minimum temperature should the ring be heated to make the job possible? Calculate the strain developed in the ring when it comes to the room temperature. Coefficient of linear expansion of iron

= 12 \times 10^{- 6} /^{\circ} C

An iron ring measuring $15.00 c m$ in diameter is to be shrunk on a pulley which is $15.05 c m$ in diameter. All measurements are done at a room temperature of $20^{\circ} C$ . To what minimum temperature should the ring be heated to make the job possible? Calculate the strain developed in the ring when it comes to the room temperature. Coefficient of linear expansion of iron = $12 \times 10^{- 6} /^{\circ} C$ .