## Question

Two rods of same material and length have their radii in ratio of 3:1, the ratio of expansion when same amount of heat is supplied will be:

### Solution

9 : 1

#### SIMILAR QUESTIONS

When a metal rod is heated it expands because:

Expansion during heating:

Two rods of lengths *L*_{1} and *L*_{2} are made of materials whose coefficients of linear expansion are α_{1} and α_{2}. If the difference between the two lengths is independent of temperature:

When a strip made of iron (α_{1}) and copper (α_{2} > α_{1}) is heated:

An iron tyre is to be fitted onto a wooden wheel 1.0 m in diameter. The diameter of thetyre is 6 mm smaller than that of wheel. The tyre should be heated so that its temperature increases by a minimum of (coefficient of volume expansion of iron is 3.6× 10^{–5}/^{o}C):

If the length of a cylinder on heating increases by 2%, the area of its base will increase by:

When a copper ball is heated, the largest percentage increase will occur in its:

A rectangular block is heated from 0^{o}C to 100^{o}C. The percentage increase in its length is 0.10%. What will be the percentage increase in its volume?

A thick and a thin wire of same material and same length are heated from 10^{o}C to 90^{o}C. Which expands more?

A piece of platinum can be sealed successfully into soda glass but not a piece of copper because: