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What is the height of room if after entering the room with a watch ur head strikes a hanging bulb?

Answer:

Oscillate the hanging bulb. Calculate the time period for one complete oscillation by Simple Harmonic Motion (SHM) of the handing bulb. Put it in the
formula T=2 * 3.14 * (L/G)^1/2

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Interview pattern of Infosys consists of three parts which is	There are three people A, B, C. Liars are of same type and Truth speaking people are of same type. Find out who is speaking truth and who is speaking false from the following statements: a) A says: B is a liar. b) B says: A and C are of same type.