Question
Efficiency of A and B are in the ratio of 2 : 3. If both
can do a work together in 60 days. Find out how much days A will take to complete the work alone?Solution
Efficiency ratio of A : B = 2 : 3 Both work together in = 60 days A take = (total of efficiency × total days)/(A efficiency) = (5 × 60)/2 = 150 days
The ozone hole that has been detected lies in the atmosphere above –
Addition of ethylene dibromide to petrolÂ
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Which among the following term refers to the commercial rearing of silkworms?
A body of mass 2 kg is moving in SHM with angular frequency 4 rad/s and amplitude 0.1 m. Max kinetic energy is:
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I. Length
II. Thickness