Question

A. FILL IN THE BLANKS (10 MARKS) :- 1. The materials through which things can be seen are called _______materials.
2. During photosynthesis, the light energy changes into __________energy
3. The angle which an incident ray makes with________ is called angle if incidence,
4. A region of darkness or partial light is called________
5. When an arrow is stretched in a bow, the mechanical energy changes into ___________energy. 6. A loudspeaker converts electric energy into___________ energy.
7. All bodies which emit light energy by themselves are called _______ bodies.
8. Any smooth polished surface which can turn back the rays of light into the same optical medium is called_________
9. Light is a form of ________
10. No work is done when displacement takes place at __________to the direction of applied force.






Please tell the answer





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Answer 1

Answer:

1.transparent materials

2.chemical energy

3.the normal at the point of incidence

4.Penumbra

5.Kinetic energy

6.sound energy.

7. luminous bodies

8.mirror

9. radiation

10.Right Angle

Answer 2

Answer:

ok

Explanation:

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