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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

- 8 {ms}^{- 1}

b

- 4 {ms}^{- 1}

c

- 5 {ms}^{- 1}

d

- 6 {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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