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Physics-

General

Easy

Question

Two balls are dropped from height $h$ and $2 h$ respectively from the earth surface. The ratio of time of these balls to reach the earth is

$1 : \sqrt{2}$
$\sqrt{2} : 1$
$2 : 1$
$1 : 4$

The correct answer is: $1 blank colon blank square root of 2$

$t equals square root of fraction numerator 2 h over denominator g end fraction end root rightwards double arrow fraction numerator t subscript 1 end subscript over denominator t subscript 2 end subscript end fraction equals square root of fraction numerator h subscript 1 end subscript over denominator h subscript 2 end subscript end fraction end root equals square root of fraction numerator 1 over denominator 2 end fraction end root equals fraction numerator 1 over denominator square root of 2 end fraction$

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