A concave mirror with a radius of curvature of 3m is used as rear view mirror for a vehicle.If a bus is located at 5m from this mirror, find the position,nature and size of the image?.... Please answer me fast.....
kvnmurty:
rear view mirror is usuallly a convex mirror.... perhaps a mistake ?
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R = 3m , R = 2f
Therefore, 3 = 2f
f = 3/2
u = -5 m (Object distance, 'u' is always negative)
v = ?
1/v + 1/u = 1/f
1/v = 1/f - 1/u
1/v = 1/3/2 - 1/-5
1/v = 2/3 + 1/5
1/v = 10/15 + 3/15
1/v = 13/15
v = 15/13
v = 1.15 cm
Size of the image is diminished
It is virtual and erect image.
Therefore, 3 = 2f
f = 3/2
u = -5 m (Object distance, 'u' is always negative)
v = ?
1/v + 1/u = 1/f
1/v = 1/f - 1/u
1/v = 1/3/2 - 1/-5
1/v = 2/3 + 1/5
1/v = 10/15 + 3/15
1/v = 13/15
v = 15/13
v = 1.15 cm
Size of the image is diminished
It is virtual and erect image.
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