Question

Choose the correct option.
1. The Sl unit of energy is
(a) newton
(b) newton/metre (c) joule
2. In a washing machine, the electrical energy is converted into
(a) mechanical energy (b) sound energy
(c) kinetic energy
3. As the speed of a body becomes three times, its kinetic energy increases by
(a) 3 times
(b) 9 times
(c) 1/3 times
(d) 1/9 times
4. If the mass of a body is halved, its potential energy becomes
(a) halved
(b) doubled
(c) four times (d) one-fourth
5. 1 watt =
(a) 9.815
6. In a dry cell, the
(a) chemical, electrical
(b) 11s
(c) 9.815-1
(d) 115-1
energy gets converted into
energy
(b) electrical, light (c) electrical, chemical (d) light, electrical
Match the columns.​

Answer 1

Answer:

1. joule

2.mechanical energy

3. i think 3 times

Answer 2

1. c.
2. a
3. a
4. a
5. a
6. c

Explanation:

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