GATE (TF) Textile 2021 Question Paper Solution | GATE/2021/TF/39

Q.39Determine the correctness or otherwise of the following Assertion [a] and Reason [r]
Assertion: Application of an optical brightening agent makes the white fabrics appear brighter.
Reason: Optical brightening agents absorb energy in the visible region and radiate back in the UV region.
(A)Both [a] and [r] are true and [r] is the correct reason for [a]
(B)Both [a] and [r] are true and [r] is not the correct reason for [a]
(C)Both [a] and [r] are false
(D)[a] is true but [r] is false
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