Which of the following electric device use minimum energy? 1. LED of 3W used for 6 hours.
2. water motor 1 HP used for 20 minutes.
3. heater of 1200W used for 3 minutes.
4. bulb of 60W used for 1 hour. ​

Explanation:

1. LED of 3W used for 6 hours.

1. LED of 3W used for 6 hours.

the answer would be   dignified - apex

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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