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
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