Textile Engineering > GATE 2021 > Textile Finishing
Determine 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

Correct : d

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Related Topics

optical brightening agent textile engineering gate white fabrics brighter UV radiation visible light absorption textile engineering 2021 optical brighteners fabric brightness textile engineering reasoning

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