Class 10

The Human Eye and the Colourful World question bank (Science)

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Q1.

Make a diagram to show how hypermetropia is corrected. The near point of a hypermetropic eye is $1 \, m$. What is the power of the lens required to correct this defect? Assume that the near point of the normal eye is $25 \, cm$.

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Q2.

$A$ prism $ABC$ (with $BC$ as base) is placed in different orientations. $A$ narrow beam of white light is incident on the prism as shown in the figure. In which of the following cases,after dispersion,the third colour from the top corresponds to the colour of the sky?

figure

(A)
$(i)$
(B)
$(iii)$
(C)
$(ii)$
(D)
$(iv)$
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