Geometrical OpticsHard
Question
Image of an object approaching a convex mirror of radius of curvature 20 m along its optical axis is observed to move from 
m to 
m in 30 seconds. What is the speed of the object in km per hour?
m to m in 30 seconds. What is the speed of the object in km per hour?Options
A.2 km/hr.
B.3 km/hr.
C.4 km/hr.
D.5 km/hr.
Solution
= - 10mFrom 1st condition
⇒ u1 = 50mFrom 2nd condition
⇒ u2 = 25mVelocity =
= 3km / hCreate a free account to view solution
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