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A pigment extract is placed in front of a beam of white light. Which colours will pass through it in the greatest amount?

(a) all colours equally Your answer
(b) green and yellow Correct
(c) red and orange Your answer
(d) blue and violet Your answer

Your answer: Correct answer: (b)

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Explanation

Why (b) is correct

Leaf pigments absorb mainly blue and red light, so green and yellow light pass through in the greatest amount.

Why the other options are wrong

(a) · your answer Absorption differs with colour.
(c) · your answer Red light is strongly absorbed by chlorophylls.
(d) · your answer Blue and violet light are strongly absorbed.

NCERT point: Leaves look green because green light is reflected and transmitted.

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