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During measurement of the refractive index of a transparent slab (L) using travelling microscope of the real at the bottom is 7 cm. Reading of the cross due to refraction is found as 8 cm. Also reading at the top of the slab is 10 cm. refractive index of material of the slab is
1392946_56c8b8f1d71144248949595857b98f1e.png
  1. 1.5
  2. 1.6
  3. 1.4
  4. 1.3

A
1.5
B
1.4
C
1.3
D
1.6
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