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प्रश्न
Which of the following is used in solar cooker to harvest the solar energy?
a) Solar panels
b) Silicon cell
c) Mirrors
d) Glass lid
उत्तर
c) Mirrors
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संबंधित प्रश्न
What is the range of temperature which can be achieved in a box-type solar cooker in two to three hours?
Name the device which converts sunlight into electricity.
Explain why, a plane mirror reflector is used in a box-type solar cooker.
What is a solar cell panel? For what purpose is it used? State its two main advantages.
With the help of a labelled diagram, explain the construction and working of a solar cooker.
Why is the solar cooker box painted black from inside?
The value of solar constant is:
(a) 1.4 kWh
(b) 1.4 kW/m
(c) 1.4 kW/m2
(d) 1.4 kW/m3
The radiations present in sunlight which make a solar cooker work are:
(a) visible light rays
(b) ultraviolet rays
(c) comic rays
(d) infrared rays
A solar cooker may not cook food if
(a) the solar cooker is not placed in the shade
(b) the glass sheet cover of solar cooker is not closed
(c) a convex mirror reflector is not used
Write short note on Electrical energy generation and environment.
Re-write the statement by selecting the appropriate option.
The solar lamp uses the ................... energy.
What are the major utilizers of solar energy in the world?
Make a table based on forms of energy and corresponding devices:
| Forms of Energy | Devices | |
| a. | Electric | _________ |
| b. | Mechanical | Sewing machine, Bicycle |
| c. | Thermal | __________ |
| d. | _________ | Solar cooker, Solar heater |
Solar photovoltaic cells convert the solar radiation energy directly into ______ energy.
A silicon solar cell of dimension 1 sq.cm. generates __________ potential difference.
Solar reflectors are important, why?
Solar energy is a renewable energy. How?
How can solar energy be harnessed? Mention any two limitations in using solar energy. How are these limitations overcome?
