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The critical angle between an equilatera...

The critical angle between an equilateral prism and air is `45^@`. If the incident ray is perpendicular to the refracting surface, then

A

`0^(@)`

B

`90^(@)`

C

`45^(@)`

D

`30^(@)`

Text Solution

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The correct Answer is:
B
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TARGET PUBLICATION-REFRACTION OF LIGHT -CRITICAL THINKING
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  2. A ray of light is incident on a refracting face of glass prism of refr...

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  3. The critical angle between an equilateral prism and air is 45^@. If th...

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  4. If the critical angle for the material of a prism is C and the angle o...

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  5. A ray of light is incident normally on one face of a prism of refracti...

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  6. A monochromatic ray of light is incident normally on one of the refrac...

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  8. The refractve index of a glass is 1.520 for red light and 1.525 for bl...

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  9. The ratio of the angle of minimum deviation of a prism in air and when...

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  10. For a small angled prism, angle of prism A of minimum deviation(delta)...

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  12. A beam of light composed of red and green rays is incident obliquely a...

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  13. When a glass prism is placed inside water, its dispersive power

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  17. To produce deviation without dispersion with the help of crown glass p...

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  18. A crown glass prism of refracting angle A= 6^@ is to be achromatised f...

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