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Geometrical Optics question

2011 · Shift 0 · Q56

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JEE Main
Physics
Geometrical Optics
2011 · Shift 0 · Q56

Geometrical Optics question

2011 · Shift 0 · Q56

JEE MainPhysicsGeometrical OpticsMCQ+4 / −1

A car is fitted with a convex side-view mirror of focal length

20cm

. A second car

2.8m

behind the first car is overtaking the first car at a relative speed of

15m/s

. The speed of the image of the second car as seen in the mirror of the first one is :

A
${1 \over {15}}\,m/s$
B
$10\,m/s$
C
$15\,m/s$
D
${1 \over {10}}\,m/s$

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