Suppose the medium in the previous question is water. Select the … - Vidyadip

Question

Suppose the medium in the previous question is water. Select the correct option(s) from the list given in that question.

v_A > v_B > v_C
v_A < v_B < v_C
v_A = v_B = v_C
$\text{v}_\text{B}=\frac{1}{2}(\text{v}_\text{A}+\text{v}_\text{C})$

✓

Answer

$\text{v}_\text{A}>\text{v}_\text{B}>\text{v}_\text{C}$
$\text{v}_\text{B}=\frac{1}{2}(\text{v}_\text{A}+\text{v}_\text{C})$

Explanation:

Since the speed of light is a universal constant,

$\text{v}_\text{A}=\text{v}_\text{B}=\text{v}_\text{C}=3\times 10^8\text{m/s}$

$\text{v}_\text{B}=\frac{1}{2}(\text{u}_\text{A}+\text{u}_\text{C})$ This expression also implies that v_A = v_B = v_C

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