# The time taken by a particle at rest to reach down a smooth inclined plane inclined at 30° is 2 sec.

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The time taken by a particle at rest to reach down a smooth inclined plane inclined at 30° is 2 sec. Find time taken by the particle to travel same distance down the inclined plane at angle of 45°.

(a) √2

(b) √2√2

(c) √3

(d) 2√2

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Correct option is (b) √2√2