Embibe Experts Solutions for Chapter: Sun as a Source of Energy, Exercise 1: Exercise 1

Solar cells are made of

Which one of the following forms of energy leads to least environmental pollution in the process of its harnessing and utilisation?

The prime source of energy on the earth is:

For working of windmill the minimum speed of wind should be :  

Which of the following are disadvantages of production of electricity from wind?

The power generated in a windmill:

The temperature difference required up-to a water level difference of $100 \mathrm{m}$  for operating an OTEC system is:

The rise of sea-water during high tide is caused by the gravitational pull of the :