Railways PYQCBT 1 2016

RRB NTPC · Question 25

If the length of the shadow of a vertical pole on the horizontal ground is √3 times its height, then the angle of elevation A. 40° B. 50° C. 30° D. 45°

  1. C

  2. D

  3. A

  4. B

Show answer & explanation

Answer: (A) C

Explanation

tan θ = height/shadow = h/(√3 h) = 1/√3, so θ = 30°.