The luminous border that surrounds the profile of a mountain just before sun rises behind it, is an example of

The silver lining surrounding the profile of a mountain just before sunrise is due to

In order to remember a telephone number, she has just looked up, Mamta repeats the number to herself several times before dialing. This is an example of

The sun appears before the sun rise and after sun set for few minutes, why?

Why does the sun seem to rise two minutes before the actual sunrise and set minutes after the actual sunset ? Explain with the help of a labelled diagram.

The temperature of a hot liquid in a container of negligible heat capacity falls at the rate of 3K//min due to heat emission to the surroundings, just before it begins to solidify. The temperature then remains constant for 30min , by the time the liquid has all solidfied. Find the ratio of specific heat capacity of liquid to specific latent heat of fusion.