an object of height 7 cm is kept at a distance of 25 cm in front of a concave mirror .The focal length of the mirror is 15 cm . At what distance from the mirror should a screen be kept so as to get a clear image ? what will be the size and nature of the image
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Answered by
205
We use the curved mirror formulae to get the image distance.:
1/f=1/v+1/u
V is object distance and u is image distance.
F is the focal length.
Substituting the values :1/15=1/25+1/u
1/u=1/15-1/25=5-3/75=2/75
U=75/2=37.5cm
We use the object distance and the image distance to get the magnification.
M=37.5/25=×1.5
The image size =1.5×7=10.5cm
The image is real.
1/f=1/v+1/u
V is object distance and u is image distance.
F is the focal length.
Substituting the values :1/15=1/25+1/u
1/u=1/15-1/25=5-3/75=2/75
U=75/2=37.5cm
We use the object distance and the image distance to get the magnification.
M=37.5/25=×1.5
The image size =1.5×7=10.5cm
The image is real.
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52
Answer:
I Hope it's help you
Explanation:
Answer =37.5 cm And 10.5 cm image is real
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