The distance between an object and its doubly magnified image by a concave mirror is:
[ Assume f = focal length ]
Text Solution
Verified by ExpertsThe correct answer is:
A
For m = 2
m = 
= 2
V = –2u ..................(i)
= 
⇒ 
= 
⇒ 
= 
⇒ u = 
& v = – f
Distance between object & image = f + f/2 = 3f/2
For m = –2 ds fy,
m = 
= – 2
v = 2u
⇒ 
= 
⇒ u = 
& v = 3f
Distance between object & image = 3f – 
.
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