Solve this three questions fast as soon as possible
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Answer:
20. C✓
21. D✓
22. B✓
Explanation:
20. Denser to Rarer means (angle i < angle r)
21. As density becomes more as speed of light slows down so Speed of light = Q>R>P
22.
- P=1/f(in m)
- -2.5=1/f
- f=1/-2.5
- f=-0.40m
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