Two plane mirrors are inclined at 70°. A rayincident on one mirror at angle θ after reflectionfalls on second mirror and is reflected from thereparallel to first mirror. The value of θ is[NEET Kar. 2013]
  • a)
    50°
  • b)
    45°
  • c)
    30°
  • d)
    55°
Correct answer is option 'A'. Can you explain this answer?

Class 12 Question

By Tripti · Jul 06, 2020 ·Class 12
Ankit Gupta answered Aug 07, 2019
From fig. 40° + θ = 90° ∴ θ = 90° – 40° = 50°

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