Water falls from a 40m height dam at the rate of 9 × 104 kg per hour. Fifty percentage of gravitational potential energy can be converted into electrical energy. Using this hydro electric energy number of 100 W lamps, that can be lit, is:
(Take g = 10 ms-2)
Water falls from a 40m height dam at the rate of 9 × 104 kg per hour. Fifty percentage of gravitational potential energy can be converted into electrical energy. Using this hydro electric energy number of 100 W lamps, that can be lit, is:
(Take g = 10 ms-2)
Option 1 -
25
Option 2 -
50
Option 3 -
100
Option 4 -
18
Asked by Shiksha User
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1 Answer
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Correct Option - 2
Detailed Solution:Given : water flow rate = = 9 × 104 kg/hr
=
Potential energy available on water per unit time
50% of it converts into electrical energy = 50% of
Let be the number of bulbs n = 100 =
n = 50
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