Advertisements
Advertisements
Question
State two disadvantages of producing electricity from solar energy.
Solution
Disadvantages of using solar panels:
1. The initial cost of a solar panel is sufficiently high.
2. The efficiency of conversion of solar energy to electricity is low.
3. A solar panel produces d.c. electricity which cannot be directly used for many household purposes.
APPEARS IN
RELATED QUESTIONS
Name five different forms of energy.
A light mass and a heavy mass have equal momentum. Which will have more kinetic energy?
(Hint : Kinetic energy K = P2/2m where P is the momentum.)
Select the renewable and non-renewable sources of energy from the following:
Water
Name three non-renewable sources of energy.
State two disadvantages of using nuclear energy for producing electricity.
A pebble is thrown up. It goes to a height and then comes back on the ground. State the different changes in form of energy during its motion.
Give three examples of bodies possessing kinetic energy.
Name the two groups in which various sources of energy are classified?
What is the form of that graph between
(i) K.E. and velocity for a constant mass?
(ii) K.E. and mass for a constant velocity?
A body of mass m falls from a height h1 to a height h2, above the ground (h1 > h2). What is the loss of potential energy?