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A prism ABC (with BC as base) is placed in different orientations. A narrow beam of white light is incident on the prism as shown in figure. In which of the following cases, after dispersion, the third colour from the top corresponds to the colour of the sky?
  • a)
  • b)
  • c)
  • d)
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A prism ABC (with BC as base) is placed in different orientations. A n...
In figure (a) base BC of the prism is at the bottom, then violet colour lies at the bottom but in figure (b), the base BC is at the top, then violet would be at the top after dispersion, and third colour would be blue.
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Most Upvoted Answer
A prism ABC (with BC as base) is placed in different orientations. A n...
HERE IS UR ANSWER :::::
When the prism is placed with angle A in the upward direction, the third colour from top is yellow(refer image A). But we have been given the third color from top is that is blue( colour of the sky).
Thus, base BC must be on the top that is the prism must be inverted.
I hope it helps you :)
pls upvote

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Community Answer
A prism ABC (with BC as base) is placed in different orientations. A n...
B is right
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A prism ABC (with BC as base) is placed in different orientations. A narrow beam of white light is incident on the prism as shown in figure.In which of the following cases, after dispersion, the third colour from the top corresponds to the colour of the sky?a)b)c)d)Correct answer is option 'B'. Can you explain this answer? for Class 10 2025 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about A prism ABC (with BC as base) is placed in different orientations. A narrow beam of white light is incident on the prism as shown in figure.In which of the following cases, after dispersion, the third colour from the top corresponds to the colour of the sky?a)b)c)d)Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 10 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A prism ABC (with BC as base) is placed in different orientations. A narrow beam of white light is incident on the prism as shown in figure.In which of the following cases, after dispersion, the third colour from the top corresponds to the colour of the sky?a)b)c)d)Correct answer is option 'B'. Can you explain this answer?.
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