Listen NCERT Audio Books to boost your productivity and retention power by 2X.
Name the semi-conductor material which is usually used for making solar cells.
Silicon is usually used for making solar cells.
What is the difference between a thermal power plant and hydro power plant?
Which of the two causes serious air pollution and how?
Compare the sun and the fossil fuels as the sources of energy.
What kind of mirror, concave, convex or plane, would be best suitable for use in a solar cooker? why?
Name that part of a box-type solar cooker which allows the sun’s rays to enter the box but does not allow inside heat to go out.
Explain why, a plane mirror reflector is used in a box-type solar cooker.
What are the advantages and disadvantage of using a solar cooker?
What is a solar cell? Draw the labeled diagram of a solar cell.
Write the uses of solar cells.
State the advantage and disadvantage of using solar cells.
What is a solar cell panel? For what purpose is it used? State its two main advantages.
What is solar constant? What is the value of solar constant?
If the energy received by 5 m2 area in 10 minutes is 4200 kJ, calculate the value of solar constant.
How has the traditional use of energy of flowing water been modified for our convenience?
How has the traditional use of wind energy been modified for our convenience?