Solar Water Heater
Solar Water Heater
Solar Water Heater:
Solar energy can be used to heat water. In a solar water heater, sunlight is allowed to fall a box made of a poor conductor of heat.
The glass top of the box lets in sunlight and traps heat. Water enters a tube that is painted black to increase the absorption of heat. It is bent several times to increase its length inside the box. This allows the water flowing through it sufficient time to absorb heat. Hot water collects in the tank of the heater for use.
Which of the following are correct ? (a) Solar energy can be used to heat water. (b) In a solar water heater, sunlight is allowed to fall a box made of a good conductor of heat. | |||
| Right Option : A | |||
| View Explanation | |||
Which of the following are correct ? (a) In a solar water heater the glass top of the box lets in sunlight and traps heat. (b) Water enters a tube in a solar water heater that is painted black to increase the absorption of heat. (c) The tube in a solar water heater is bent a number of times which allows the water flowing through it sufficient time to absorb heat. | |||
| Right Option : D | |||
| View Explanation | |||
In a solar water heater the tube is bent several times to_______________ inside the box | |||
| Right Option : C | |||
| View Explanation | |||
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It was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
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