Q139 / 150 · MHT CET 2019 (02 May Shift 1) · Physics

A thin hollow prism of refracting angle $3^{o},$ ﬁlled with water gives a deviation of $1^{o} .$ The refractive index of water is

A
$1.59$
Correct answer
B
$1.33$
C
$1.46$
D
$1.51$

Solution

δ = (n - 1) \cdot A

1^{o} = (n - 1) 3^{o}

n = \frac{4}{3} = 1.33

Hence, the correct answer is option: 'B'.

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