Class 10 Exam  >  Class 10 Questions  >  A scientist uses a water tank located at a he... Start Learning for Free
A scientist uses a water tank located at a height of 27 m from the ground to generate electric power to run a 50W bulb. He installs a water driven wheel generator on the ground. If the capacity of tank is 500L and efficiency of generator is 80%,then what is the time for which he can keep the bulb on with a full tank?
Verified Answer
A scientist uses a water tank located at a height of 27 m from the gro...
Height of water tank, h = 27m

capacity of water tank, V = 500L = 500 x 1000 ml

so, mass of water is available in the tank, m = 500 � 1000 ml x 1g/ml = 500000g = 500 kg

so, potential energy of water, P.E = mgh

= 500kg x 10 m/s^2 x 27m

= 135000 J

electric power of generator = 50W

efficiency of generator = 80% of 50W

= 80/100 x 50

= 40 W

now, time taken to full the tank, t = potential energy of water/efficiency of generator

= 135000/40 sec

= 13500/4 sec

= 135 x 25 sec

= 3375 sec

= 56 min 15 sec
This question is part of UPSC exam. View all Class 10 courses
Explore Courses for Class 10 exam

Top Courses for Class 10

A scientist uses a water tank located at a height of 27 m from the ground to generate electric power to run a 50W bulb. He installs a water driven wheel generator on the ground. If the capacity of tank is 500L and efficiency of generator is 80%,then what is the time for which he can keep the bulb on with a full tank?
Question Description
A scientist uses a water tank located at a height of 27 m from the ground to generate electric power to run a 50W bulb. He installs a water driven wheel generator on the ground. If the capacity of tank is 500L and efficiency of generator is 80%,then what is the time for which he can keep the bulb on with a full tank? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about A scientist uses a water tank located at a height of 27 m from the ground to generate electric power to run a 50W bulb. He installs a water driven wheel generator on the ground. If the capacity of tank is 500L and efficiency of generator is 80%,then what is the time for which he can keep the bulb on with a full tank? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A scientist uses a water tank located at a height of 27 m from the ground to generate electric power to run a 50W bulb. He installs a water driven wheel generator on the ground. If the capacity of tank is 500L and efficiency of generator is 80%,then what is the time for which he can keep the bulb on with a full tank?.
Solutions for A scientist uses a water tank located at a height of 27 m from the ground to generate electric power to run a 50W bulb. He installs a water driven wheel generator on the ground. If the capacity of tank is 500L and efficiency of generator is 80%,then what is the time for which he can keep the bulb on with a full tank? in English & in Hindi are available as part of our courses for Class 10. Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free.
Here you can find the meaning of A scientist uses a water tank located at a height of 27 m from the ground to generate electric power to run a 50W bulb. He installs a water driven wheel generator on the ground. If the capacity of tank is 500L and efficiency of generator is 80%,then what is the time for which he can keep the bulb on with a full tank? defined & explained in the simplest way possible. Besides giving the explanation of A scientist uses a water tank located at a height of 27 m from the ground to generate electric power to run a 50W bulb. He installs a water driven wheel generator on the ground. If the capacity of tank is 500L and efficiency of generator is 80%,then what is the time for which he can keep the bulb on with a full tank?, a detailed solution for A scientist uses a water tank located at a height of 27 m from the ground to generate electric power to run a 50W bulb. He installs a water driven wheel generator on the ground. If the capacity of tank is 500L and efficiency of generator is 80%,then what is the time for which he can keep the bulb on with a full tank? has been provided alongside types of A scientist uses a water tank located at a height of 27 m from the ground to generate electric power to run a 50W bulb. He installs a water driven wheel generator on the ground. If the capacity of tank is 500L and efficiency of generator is 80%,then what is the time for which he can keep the bulb on with a full tank? theory, EduRev gives you an ample number of questions to practice A scientist uses a water tank located at a height of 27 m from the ground to generate electric power to run a 50W bulb. He installs a water driven wheel generator on the ground. If the capacity of tank is 500L and efficiency of generator is 80%,then what is the time for which he can keep the bulb on with a full tank? tests, examples and also practice Class 10 tests.
Explore Courses for Class 10 exam

Top Courses for Class 10

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev