QB). The figure shows a wire passing through the ice slab. Ice melts at low temperature due to increase in pressure. When the wire passes through the slab, the slab does not split. What is this phenomenon of refreezing called ?
C). Obtain an expression for the coefficient of linear expansion of a rod of length L.
D) A body cools from 80°C to 50°C in 5 minutes. Calculate the time it takes to cool from 60°C to 30°C. The temperature of the surroundings is 20°C.
E) With reverence to the figures given below, identify which figure indicates land breezes and which figure indicates sea breezes. Explain how they are formed.
Explain why a brass tumbler feels much colder than a wooden tray on a chilly day?
