Q.Assertion (A) : Now-a-days it is easy to differentiate between designer clothes and knock offs. Reason (R) : Thread with unique optical properties has been produced which can be used to create invisible patterns in fabrics visible only under polarised light. Codes :
Correct answer: Both (A) and (R) are correct.
Explanation
Designer clothes and knock offs can be easily differentiated by the use of invisible pattern. Thread with unique optical properties has been produced which can be used to create invisible patterns in fabrics, visible only under polarised light. By using optical fibres one can create a unique composition of fibres and dye particle which can not be replicated.
Designer clothes and knock offs can be easily differentiated by the use of invisible pattern. Thread with unique optical properties has been produced which can be used to create invisible patterns in fabrics, visible only under polarised light. By using optical fibres one can create a unique composition of fibres and dye particle which can not be replicated.