What is the speed of a train if it overtakes two persons who are walki – McqOptions

MCQOPTIONS

1.	What is the speed of a train if it overtakes two persons who are walking in the same direction at the rate of a m/s and (a + 1) m/s and passes them completely in b seconds and (b + 1) seconds respectively??
A.	(a + b) m/s
B.	(a + b + 1) m/s
C.	(2a + 1) m/s
D.	(2a + 1)/2 m/s
Answer» C. (2a + 1) m/s

Discussion

No Comment Found

Related MCQs

The earth\'s atmosphere is an envelope of gases present upto a height of about __________ kms.
Low pressure steam (with saturation temperature between 105 to 120°C) is usually used in the vacuum evaporators, which normally employ a vacuum of about __________ mm Hg (referred to a 760 mm mercury barometer).
If the specific heats of a gas and a vapor are 0.2KJ/Kg.°K and 1.5 KJ/Kg.°K respectively, and the humidity is 0.01; the humid heat in KJ/°Kg. is
Metallic recuperators are not used for waste heat recovery, if the hot flue gas temperature is above __________ °C, because corrosion prevails at higher temperatures.
Fenske\'s equation for determining the minimum number of theoretical stages in distillation column holds good, when the
World\'s worst radioactive pollution was caused by nuclear reactor disaster which occured in
Noise level during normal conversation among men is about __________ decibles
Combustion of furnace oil in a furnace (soaking pit) with preheated combustion air at 400°C results in saving of about __________ percent furnace oil as compared to its combustion with atmospheric air, if the flue gas outlet temperature from the
Which of the following solutions will follow Raoult\'s law most closely ?
It takes 6 hours to dry a wet solid from 50% moisture content to the critical moisture content of 15%. How much longer it will take to dry the solid to 10% moisture content, under the same drying conditions? (The equilibrium moisture content of the