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Defect of colour blindness can be remedied by the use of [UPSC 2008]
Concave lens
Convex lens
Cylindrical lens
None of the above
Read Solution (Total 2)
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- cylindrical lens
- 9 years agoHelpfull: Yes(0) No(0)
- None of the above; colour blindness cant be cured
- 9 years agoHelpfull: Yes(0) No(0)
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