SATHEE: Optics Question 445

Optics Question 445

Question: Critical angle of glass is $θ_{1}$ and that of water is $θ_{2}$ . The critical angle for water and glass surface would be $(μ_{g} = 3 / 2, μ_{w} = 4 / 3)$

Options:

A) Less than $θ_{2}$

B) Between $θ_{1}$ and $θ_{2}$

C) Greater than $θ_{2}$

D) Less than $θ_{1}$

Show Answer

Answer:

Correct Answer: C

Solution:

[c] $\sin θ_{1} = \frac{1}{μ_{g}}$

and $\sin θ_{2} = \frac{1}{μ_{w}}$

Since $μ_{g} > μ_{w,} θ_{1} < θ_{2}$

Critical angle $θ$ between glass and water will be given by $\sin θ = \frac{μ_{w}}{μ_{g}}$ Or $θ > θ_{2}$

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Optics Question 445

Question: Critical angle of glass is θ1 and that of water is θ2 . The critical angle for water and glass surface would be (μg=3/2,μw=4/3)

Options:

Answer:

Solution:

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Question: Critical angle of glass is $θ_{1}$ and that of water is $θ_{2}$ . The critical angle for water and glass surface would be $(μ_{g} = 3 / 2, μ_{w} = 4 / 3)$