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Q.

Find the velocity of the image when the object and mirror both are moving towards each other with velocities $2 and 3 {ms}^{- 1}$ . How are they moving

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a

$- 4 {ms}^{- 1}$

b

$- 6 {ms}^{- 1}$

c

$- 8 {ms}^{- 1}$

d

$- 5 {ms}^{- 1}$

answer is A.

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Detailed Solution

$V_{0} = 2 \hat{i}$

$V_{M} = - 3 \hat{i}$

$V_{I} = - V_{0 x} \hat{i} + 2 V_{m x} \hat{i} = - 2 \hat{i} - 6 \hat{i} = - 8 \hat{i}$

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