state gov RSMSSB Junior Assistant & Lipik Grade (LDC) Mock Test 2024 Physics Optics Refraction and Reflection
When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid, it acts as a plane sheet of glass. This implies that the liquid must have a refractive index
1
less than that of glass
2
equal to that of glass
3
less than one
4
greater than that of glass
5
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