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Rohini Mahabir
Asked: 2022-11-09T13:21:05+05:30 In:

Light travels in two media A and B with speeds `1.8 × 10^(8) m s^(–1) and2.4 × 10^(8) m s^(–1)` respectively. Then the critical angle between them is
A. `sin^(-1) ((1)/(5))`
B. `sin^(-1) ((4)/(5))`
C. `sin^(-1) ((1)/(2))`
D. `sin^(-1) ((2)/(3))`

Light travels in two media A and B with speeds `1.8 × 10^(8) m s^(–1) and2.4 × 10^(8) m s^(–1)` respectively. Then the critical angle between them is
A. `sin^(-1) ((1)/(5))`
B. `sin^(-1) ((4)/(5))`
C. `sin^(-1) ((1)/(2))`
D. `sin^(-1) ((2)/(3))`
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  1. Correct Answer – B

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Zaad Kabra
Asked: 2022-11-04T18:42:22+05:30 In:

Light travels in two media A and B with speeds `1.8 × 10^(8) m s^(–1) and2.4 × 10^(8) m s^(–1)` respectively. Then the critical angle between them is
A. `sin^(-1)(2/3)`
B. `tan^(-1)(3/4)`
C. `tan^(-1)(2/3)`
D. `sin^(-1)(3/4)`

Light travels in two media A and B with speeds `1.8 × 10^(8) m s^(–1) and2.4 × 10^(8) m s^(–1)` respectively. Then the critical angle between them is
A. `sin^(-1)(2/3)`
B. `tan^(-1)(3/4)`
C. `tan^(-1)(2/3)`
D. `sin^(-1)(3/4)`
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  1. Correct Answer – D
    (d) We have,
    `C=sin^(-1)(v_(1)/v_(2))=sin^(-1)(3/4)`

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