Question
If a tank can be filled by a tap in 14 hours, but due to
an outlet, it actually takes 4 hours longer to fill the tank, find the duration in which the outlet alone would empty the tank?Solution
Let tap ‘A’ fill the tank and tap ‘B’ empty the tank. Taking LCM of 14 and 18 = 126 Efficiency of A = 9 Efficiency of (A – B) = 7 Efficiency of B = 9 – 7 = 2 Tap B will empty the tank = 126/2 = 63 So, tap B will empty the tank in 63 hours.
Two identical circular current-carrying loops, placed coaxially, carry the same current i in the same direction . As the loops are brought closer to eac...
Which of the following statement is correct?
I. Blood is a type of connective tissue
II. Bone is a type of connective tissue
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In Bohr’s model of the hydrogen atom, electrons in “stationary” orbits do not emit radiation continuously because:
The radiation initially produced in fluorescent tube is –
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What is the atomic mass of carbon?
A liquid of density ρ is rotating in a cylindrical vessel with constant angular velocity ω. The free surface of the liquid takes the shape of:
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