An electron with kinetic energy K_{1} enters between parallel plates of a capacitor at an angle \alpha with the plates. It leaves the plates at angle \beta with kinetic energy K_{2}. Then, the ratio of kinetic energies K_{1}: K_{2} will be [25 Feb 2021 Shift 2]

Correct Answer is : cos2βcos2α

{\sin ^{2} \beta}/{\cos ^{2} \alpha}

{\cos ^{2} \beta}/{\cos ^{2} \alpha}

JEE Main 25 Feb 2021 Shift 2 Solved Paper

Section: Physics

Question : 10 of 90

Marks: +1, -0

An electron with kinetic energy K1 enters between parallel plates of a capacitor at an angle α with the plates. It leaves the plates at angle β with kinetic energy K2. Then, the ratio of kinetic energies K1:K2 will be

[25 Feb 2021 Shift 2]

‌
cos‌β
cos‌α
‌
cos‌β
sin‌α
‌
sin2β
cos2α
‌
cos2β
cos2α

Validate

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