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प्रश्न
Re-write the statement by selecting the appropriate option.
The solar lamp uses the ................... energy.
विकल्प
Heat
Wind
Light
Sound
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उत्तर
The solar lamp uses the Light energy.
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संबंधित प्रश्न
What kind of mirror – concave, convex or plain – would be best suited for use in a solar cooker? Why?
What type of reflector is used in a box-type solar cooker?
What is the range of temperature which can be achieved in a box-type solar cooker in two to three hours?
Fill in the following blank with suitable word:
A solar cell converts ................ energy into ................ energy.
Explain why, a plane mirror reflector is used in a box-type solar cooker.
What is solar constant? What is the value of solar constant?
With the help of a labelled diagram, explain the construction and working of a solar cooker.
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
If the solar constant is 1.4 kW/m2 then solar energy recived by 1m2area in one hour is:
(a) 5040 J
(b) 504.0 kJ
(c) 5040 kJ
(d) 5.04 kJ
Name two devices which can be utilised for the cooking of food so as to save fuel.
What steps would you suggest to reduce energy consumption?
Draw neat and labelled diagram.
One solar panel produces a potential difference of 18 V and current of 3 A. Describe how you can obtain a potential difference of 72 Volts and current of 9 A with a solar array using solar panels. You can use sign of a battery for a solar panel.
Write a short note on electrical energy generation and environment.
A silicon solar cell of dimension 1 sq.cm. generates a current of about ___________.
A silicon solar cell of dimension 1 sq.cm. generates __________ potential difference.
State the importance of inverters.
Complete the table.
| Limitations of Solar energy | Limitations of Wind energy |
______ is not harmful to the environment.
How can solar energy be harnessed? Mention any two limitations in using solar energy. How are these limitations overcome?
