open the pic and plz solve the question with explanation
Asked by futureisbright051101
11th April 2018,
6:54 AM
Answered by Expert
Answer:
Refractive index μ = Real depth / Apparent depth.
Silvered surface act as a mirror. To get image at 23.2 cm behind the silvered surface, the object should be 23.2 cm in front of the silvered surface.
glass block thickness+ object apparent distance = 23.2 cm; hence object apparent distance = 23.2-10 = 13.2 cm
glass block thickness+object real distance = 30 cm ; hence object real distance = 30-10 = 20 cm
hence refractive index = 20/13.2 = 200/132
Answered by Expert
13th April 2018,
12:39 PM
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