If an electron enters into a space between the plates of a parallel plate capacitor at an angle alpha with the plates and leaves at angle betato the plates. The ratio of its kinetic energy while entering the capacitor to that while leaving will be :

If an electron enters into a space between the plates of a parallel pl

1.	If an electron enters into a space between the plates of a parallel plate capacitor at an angle alpha with the plates and leaves at angle betato the plates. The ratio of its kinetic energy while entering the capacitor to that while leaving will be :
Answer» `[(COS alpha)/(cos beta)]^(2)` `[(cos beta)/(cos alpha)]^(2)` `[(SIN alpha)/(sin beta)]^(2)` `[(sin beta)/(sin alpha)]^(2)` Answer :B

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If an electron enters into a space between the plates of a parallel plate capacitor at an angle alpha with the plates and leaves at angle betato the plates. The ratio of its kinetic energy while entering the capacitor to that while leaving will be :

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