What are the advantages and disadvantages of using a solar cooker? Are there places where solar cookers would have limited utility? - Science


What are the advantages and disadvantages of using a solar cooker? Are there places where solar cookers would have limited utility?


Solution 1

Solar cooker uses Sun’s energy to heat and cook food. It is inexhaustible and clean renewable source of energy. It is free for all and available in unlimited amount. Hence, operating a solar cooker is not expensive.
Disadvantage of a solar cooker is that it is very expensive. It does not work without sunlight. Hence, on cloudy day, it becomes useless.
The places where the days are too short or places with cloud covers round the year, have limited utility for solar cooker.

Solution 2

The advantages of using a solar cooker are as follows.
       a) It does not require fuels such as coal, kerosene and liquefied petroleum gas (LPG).
       b) It does not produce harmful smoke that pollutes the air.
       c) It does not spoil the nutrients in food.
       d) It allows for the preparation of more than one item at a time.

The disadvantages of using a solar cooker are as follows.
       a) It cannot be used to cook food at night.
       b) A cloudy sky affects its working.
       c) The direction of the reflector has to be changed from time to time.
       d) It cannot be used for baking.

Concept: Solar Energy
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Chapter 3: Sources of Energy - Exercise 3 [Page 141]


Lakhmir Singh Class 10 Physics (Science)
Chapter 3 Sources of Energy
Exercise 3 | Q 19 | Page 141
NCERT Science Class 10
Chapter 14 Sources of Energy
Exercises | Q 9 | Page 255

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State the advantages and disadvantages of using solar cells.

 If the energy received by 5 m2 area in 10 minutes is 4200 kJ, calculate the value of solar constant.

 With the help of a labelled diagram, explain the construction and working of a solar cooker.

In order to make an efficient solar cooker, the cover of the cooker box should be made of:

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Name one source of energy which is not derived from solar energy directly of indirectly.

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

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Make a table based on forms of energy and corresponding devices:

  Forms of Energy Devices
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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 a current of about ___________.

A silicon solar cell of dimension 1 sq.cm. generates __________ potential difference.

Power available from solar cells : DC : : power require to run domestic equipments : _________

The power produced from solar cells is a DC.

The potential difference available from a solar cell depends on its area.

Solar reflectors are important, why?

State the importance of inverters.

Give scientific reason.

Hydropower, solar energy and wind energy are called renewable energy.

Distinguish between the following.

Electricity generation from solar cells and solar thermal power generation

Complete the following flow chart.

Complete the table.

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Solar energy is a non depleting energy. Justify.

Solar energy is a renewable energy. How?

______ is not harmful to the environment.

Kamuthi solar power project is situated in ______ district in Tamil Nadu.

______ is considered as a great source of energy.

The installed capacity of the Kamuthi solar power project is ______ MW.

Write a note on Kamuthi Solar Project.

Observe the figure and label it properly:

  1. What is the figure related to?
  2. Why are reflectors used?
  3. Draw a flow chart showing different stages in such a process.
  4. How is the process used to generate electricity?
  5. What other method can be used to generate electricity using the same energy source?


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