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Thepotemich [5.8K]
4 years ago
15

How many focal points does a lens have?

Physics
1 answer:
VMariaS [17]4 years ago
4 0

Answer and Explanation:

Every lens have two focal points each focal point is present on the either side of the lens. In lenses when light comes from the infinite it passes through the focal point it is true for both converging as well as diverging lens. In mirror there is only one focal point as it one face is covered but in lens light can pass through side of the lens so it has two focal point

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Animals are the only way that native plant seeds can be dispersed.<br> O True<br> O False
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One observer stands on a train moving at a constant speed, and one observer stands at rest on the ground. The person on the trai
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Equal to c ( b )

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At the coast on a summer day, the land is hotter than the ocean. Warm air over the land rises and is replaced by cooler air, cau
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- during the day, the land gets warm quicker than the water. The land, therefore, release heat into the air over it, which becomes warm. The air over the sea, on the contrary, is still cold (since the water takes more time to get warm), so a convection current occurs, in which the warm air over the land flows towards the sea, and it is replaced by the cold air coming from the sea.

- during the night, the process is reverted: the land gets cold quicker than the water. Therefore, the air over the sea is warmer than the air over the land. So a convection current occurs, but in this case the warm air over the sea flows towards the land, and it is replaced by the cold air coming from the land.

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then we know that the intensity of light after passing through second polarizer is

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