Question

VERY URGENT
Subject : Physics Class : VII (Techno)
Topic : Optics Concept - I
WORKSHEET - 26
MCQ with one or more correct answers.
1. Ray optics is also called as [ ]
a) Geometrical optics b) Wave - optics c) Light d) Any of these
2. If the wave length of light is far less than the size of the object, then the study of light is called
[ ]
a) Wave optics b) Ray optics c) Fibre optics d) Optics
3. The form of energy that makes things visible [ ]
a) Sound b) Kinetic Energy c) Potential energy d) Light
4. Among the following, transparent medium is [ ]
a) Ground glass b) Tracing paper c) Air d) Wood
5. Example of a Non - luminous body [ ]
a) Sun b) Burning lamp c) Star d) Moon
6. The parth is which light energy travels from one point to other is known as [ ]
a) Way of light b) wave of light c) Ray of light d) None of these
7. The medium through which light can not pass is [ ]
a) Opaque b) Translucent c) Transparent d) Denser
8. The medium in which the physical properties of the medium are same every where is [ ]
a) Heterogeneous medium b) Homogeneous medium
c) Mono medium d) Equal medium
9. Ground glass is the example for [ ]
a) Transparent b) Translucent c) Opaque d) All the above
10. Ray very near to each other and taken together is called [ ]
a) Bench of rays b) Light c) Beam of light d) None of these
Sri Chaitanya School 1 No. 1 School In india

Answer 1

Answer:

1.b) wave is optics

2.d) optics

3.d) light

4.c) air

5.me sun hoga but in luminous object and other are non luminous object

6.c) ray of light

7. a) opaque

8. d) equal medium

9. c) opaque

10. d ) none of these