Lakhmir Singh and Manjit Kaur Solutions for Chapter: Sources of Energy, Exercise 11: Very Short Answer Type Questions

What type of energy is possessed by flowing water? (Choose from Potential energy, Chemical energy, Kinetic energy)

Flowing water can rotate a turbine. Which type of energy is used by the turbine? (kinetic energy/potential energy/heat energy)

Name the original source of wind energy.

What should be the minimum wind speed (in $\mathrm{km}/\mathrm{h}$) for the satisfactory working of a wind-powered electric generator?
(Choose the correct answer from values given in $\mathrm{km}/\mathrm{h}$: $5, 15, 25$).

What type of reactions occurring inside the sun produce solar energy?

What type of reflector is used in a box-type solar cooker?

Name the device which converts sunlight into electricity. (Solar cell / solar cooker)

How much solar energy will be received by $1 {\mathrm{m}}^2$ area in one hour if the solar constant be $1.4 \mathrm{kW}/{\mathrm{m}}^2$?