43. ............is the instrument used to measure the power of a lens.
A. oxymetre B. power meter C. dioptre meter D. telescope
44. Magnification produced by a rear-view mirror fitted in vehicles
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Answered by
1
Answer:
The answer of 43 no. question is C) Dioptre metre
44th question I don't understand what you want to ask
Answered by
1
Answer:
Dioptometer
Explanation:
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