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7. Lenses
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Q6 of 12 Page 92

Distinguish between:

Farsightedness and Nearsightedness


The diagram is given below:



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4

Give scientific reasons:

a. Simple microscope is used for watch repairs.


b. One can sense colours only in bright light.


c. We cannot clearly see an object kept at a distance less than 25 cm from the eye.

5

Explain the working of an astronomical telescope using refraction of light.

6

Distinguish between:

Concave lens and Convex Lens

7

What are the function of iris and the muscles connected to the lens in the human eye?

Questions · 12
7. Lenses
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