Question

Assertion : At the first glance, the top surface of the Morpho butterfly'* wing appears a beautiful blue-green. If the wing moves the colour' changes.

Reason : Different pigments in the wing reflect light at different angles.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

The correct option is (c).

Explanation:

The extremely fine lamellated scales covering the Morpho'* wings reflect incident light repeatedly at successive layers leading to interference effect that depends on both the wavelengths and angle of incidence. Thus the, colours produced vary with viewing angle.