A glass stopper stuck in the neck of a bottle can be removed by pouring hot water on the neck of the bottle.
select the correct alternative
Two rods A and B of the same metal, but of length 1 m and 2 m respectively, are heated from 0°C to 100°C. Then
- both the rods A and B elongate the same
- the rod A elongates more than the rod B
- the rod B elongates more than the rod A
- the rod A elongates, but the rod B contracts.