Find the velocity of image in situation as shown in fig.
Text Solution
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Sol.
= Velocity of object = (9 
+ 2 
) m/s
= Velocity of mirror = 2 
m/s
m = 
= 
= – 2
For velocity component parallel to optical axis
( 
) || = – m 2 ( 
) |
( 
) || = – (–2) 2 11 
= – 44 
m/s
For velocity component perpendicular to optical axis
( 
) ⊥ ⊥ = ( 
) ⊥ ⊥
= – (–2) 12 
= – 24 
m/s
= Velocity of image w.r.t. mirror
= ( 
) || + ( 
) ⊥ ⊥
= (– 44 
– 24 
) m/s
Also, 
= 
– 
or 
= 
+ 
= (– 44 
– 24 
) – 2 
= (– 46 
– 24 
) m/s.
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