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Two plane mirrors are inclined at 70^ . A ray incident on one mirror at angle, after reflection falls on second mirror and is reflected from there parallel to first mirror. The value of is:

Options

  1. A45^
  2. B30^
  3. C55^
  4. D50^

Correct answer

D. 50^

Step-by-step solution

The actual situation is shown in the given degree aligned +40^ & =90^ & =90-40=50^ aligned

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