Two polarizers are arranged as shown. how much light will reach point x?



0%

less than 50% but more than 0%

50%

more than 50% but less than 100%

100%

It will be 50%

Explanation:

Two polarizers at intertwining angles like that will still have 50% of the light come through. Although if you had them on top of each other at vertical angles then it would be 100%

total distance travelled = 60 miles

total time taken =1.5 hours

average speed = total distance / total time

60 / 1.5

= 40

therefore, average speed = 40 m/h

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