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Stopping Potential

The equation ...

Question

The equation of a light wave is written as $y = A \sin (k x - ω t)$ . Here, y represents
(a) displacement of ether particles
(b) pressure in the medium
(c) density of the medium
(d) electric field

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Solution

(d) electric field

Light consists of mutually perpendicular electric and magnetic fields. So, the equation of a light wave is represented by its field vector.

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