Question

On heating the rod, the length of the rod increases. Increase in the length of rod depends upon ______

• A. The material of the rod
• B. The length of the original rod
• C. The increase in its temperature
• D. All the above

Answer 1

Answer: (A), (B), (C)

The correct options are
A

The material of the rod

B

The length of the original rod

C

The increase in its temperature

It depends on the material because different materials have the different arrangement of the particles and their particles have different properties. Hence, due to a rise in temperature, they expand in different ways according to the arrangement and properties. And, more the length of the material more is the increase in length with the same increase in temperature and if we double the length of the material, the increase in length is also doubled. The increase in the length of a rod is found to be directly proportional to the increase in its temperature.