RRB RPF RPSF SI and CONS Model Papers 6 with solutions

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Question : 108 of 120

Marks: +1, -0

If

√{0.04 × 0.4 × a}=0.004 × 0.4 × √{b},

then the value

$16 × 10^{-3}$
$16 × 10^{-4}$
$16× 10^{-5}$
$16 × 10^{-6}$

Solution:

(3) On squaring both sides of

√{0.04 × 0.4 × a}=0.004 × 0.4 ×√{6} ,

We get, 0.04 × 0.4 × a = 16 × 10

^{–6}

× 16× 10

^{–2}

× b,
Therefore,

{a}/{b}= {16 × 16 × 10^{-8}}/{16 × 10^{-3}}=16 × 10^{-5}

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