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Assertion: When a glass prism is immersed in water, the deviation caused by prism decreases.

Reason: Refractive index of glass prism relative to water is less than that relative to air.

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Important Questions on Refraction of Light

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 5 - Refraction of Light>Evaluation Test>Q 10
A beam of light consisting of red and blue colours is incident on a right-angled prism ABC . The refractive indices of the material of the prism for the red and blue wavelengths are 1.39 and 1.47, respectively. The colour/colours transmitted through the face AC of the prism will be

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 5 - Refraction of Light>Evaluation Test>Q 11
Diamond is optically more dense than water because
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 5 - Refraction of Light>Evaluation Test>Q 12

A diver swims obliquely above a fish in water. If he wants to hit the fish, he must aim

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 5 - Refraction of Light>Evaluation Test>Q 13
Critical angle of glass is θ1 and that of water is θ2.  The critical angle for water and glass surface would be μg=32, μw=43
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 5 - Refraction of Light>Evaluation Test>Q 14
The value of critical angle is least for which of the following colours of light?
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 5 - Refraction of Light>Evaluation Test>Q 15
It is found that all electromagnetic signals sent from P towards Q reach point R. The speed of electromagnetic signals in glass cannot be

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 5 - Refraction of Light>Evaluation Test>Q 16
The angular dispersion produced by a small angle prism placed in air
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 5 - Refraction of Light>Evaluation Test>Q 17
Between the primary and secondary rainbows, there is a dark band known as Alexander's dark band. This is because