An object is placed at 20cm from a convex mirror of focal length 10cm.the image formed by a mirror is?
im writing physics..pls..ans.to this
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An object is placed at 20cm from a convex mirror of focal length 10cm.the image formed by a mirror is?
im writing physics..pls..ans.to this
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u=-20cm
f=10cm
1/f=1/v+1/u
1/v=1/f-1/u
1/v=1/10-(-1/20)
1/v=2/20+1/20
1/v=3/20
v=20/3cm
hope it helps.
Dear Student,
● Answer -
v = 6.67 cm
◆ Explaination -
# Given -
u = 20 cm
f = 10 cm
# Solution -
Using lens formula,
1/v - 1/u = 1/f
1/v = 1/u + 1/f
1/v = 1/20 + 1/10
1/v = 3/20
v = 20/3
v = 6.67 cm
The image formed by mirror is at 6.67 cm, and is minimized.
Thanks dear. Hope this helps you...