Tag: production of electricity from solar energy
Questions Related to production of electricity from solar energy
A solar cell converts ________ (sound / light) energy to_______ (light / electrical) energy. Fill the blanks.
Photo voltaic cells use _________ to produce electricity.
The efficiency of a solar cell is 20% and its surface area is $4 {cm}^{2}$. Find the electrical energy generated in one second, by 3000 cells, connected in a solar panel, if $640 J$ of solar energy is incident on one meter square area, in one second.
The temperature in a spherical reflector type solar cooker is raised to above $500 ^oC$ by :
State whether true or false :
We can also prepare food on a cloudy day through solar cooker.
State whether true or false :
We can adjust parabolic solar cooker in such a way so that the mirror moves with the sun in order to face the sun always.
Increasing the surface area of a solar cell
State whether true or false :
Solar Energy doesn't cause any pollution.
In order to absorb more heat, the outer surface of copper tube of solar water heater is coloured with :
Two identical immersion heaters are to be used to heat water, in a large container. Which one of the following arrangement would heat the water faster :
Give reasons for your answer.