G11Phy Oq. Page 3f

The SI unit of power is the watt. (04 05Gco:) (06 mag!)

1. The force. applied to an elastic body .is called stresS. (04 (06 05000')

2. The power is the product of force to velocity.
   (03 04 05Gcv:i• 05 05Geo:)

3. The ratio of the' stress to the strain is constant. (05 9+8)

4. Work is a vector quantity. (03

5. Elastic limits of different bodiés are the same. (03 ojcco:)

6. The potential energy can be:transformed into electrical energy (02 486(+:)

7. The total energy of the.mniverse is constant. (00 95GCOO(01 €4)
   TRUE (or) FALSE Types

8. The- universe is the smallest physical system. (01 06cå8:1 ch0J8)
   The total energy in the universe is varying. (01 96:) 0$ l l . The universe is the largest physical system. (00

9. Water in a dam has potential energy. (00 eco-a:)

10. Fast moving water has potential energy. (00 96:)

11. Energy can be changed from one form to another form. (99#0?})

12. If the velocity of abody is doubled, its kinetic energy will become four times of

13. When a body is at rest on table , it hay no kinetic ,energy. (99 eon:)

14. Speed in mechanics is measured in megahertz. (99

15. For an isolated system the sum of différent forms of energy must be constant.