A solar water heater cannot be used to get hot water on
NCERT Solution for Class 10 Science Chapter 14
Sources of Energy
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Exercises Questions
Page No-254
Questions No-1
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NCERT Solution for Class 10 Science Chapter 14
Sources of Energy
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Exercises Questions
Page No-254
Questions No-1
(b) A solar water heater uses solar energy to heat water. It requires day light (intense sunlight) to function properly. On a cloudy day, the sunlight reflects back in the sky from the clouds and is unable to reach the ground. Therefore, solar energy is not available for the solar heater to work properly. Hence, solar water heater does not function on a cloudy day.
Hence, the option (b) is correct.
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b) A cloudy day
A solar water heater uses solar energy to heat water. On a cloudy day, the sunlight won’t be intense and bright enough and it gets reflected back in the sky from the clouds. This holds the sunlight from reaching the ground. Therefore, solar energy won’t be available for the solar water heater to heat the water.