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UPSC Civil Service Exam Questions - Engineering

Q1:

Which one of the following gives the correct distance between the lighthouse and a ship, when the lighthouse whose height is 100 m is visible just above the horizon from the ship ?

A 30.68 km

B 36.50 km

C 38.54 km

D 40.54 km

ANS:C - 38.54 km

D=3.855 ° C
Where c=100
Then D=3.855 * 100=38.55km.