Physics
Grade-10
Easy
Question
In which of the following purposes lenses are not used?
- Spectacles
- Microscopes
- Magnifying glass
- Refrigerator
Hint:
The lenses are used for optical purposes to focus or disperse a light beam by means of refraction.
The correct answer is: Refrigerator
Lenses are not used in refrigerators.
- The lenses are used for various purposes in optical devices.
- The concave lenses are converging lenses and the convex lenses are diverging lenses.
- They are mainly used in designing optical devices such as microscopes, spectacles, magnifying glasses, etc. which focuses or disperses a light beam by means of refraction.
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