Question

State Law of conservation of energy. Explain the working of a hydro power plant.

b-Weight of a body is 100N. Find its mass.

c-State first and second law of reflection.

d. Write energy conversion in following:

(i) Solar cooker

(ii) Wind mill

e-.Why do microscopes use plane mirrors?

f-.(i) Give relation between mass and weight.

(ii) Give two differences between weight and mass​

Answer 1

Answer:

Law of conservation of energy - Energy can neither be created nor be destroyed but it can be transferred from one form to another form.

Explanation:

I think it would help you.