an object 3 cm high is placed at a distance of 10cm in front of a concave mirror of focal length 20 cm find the position nature and size of the image
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Answered by
15
I=3cm
u=10cm
f=20cm
By mirror formula
1/-f=1/-u+1/-v
1/-20=1/-10+1/-v
1/v=1/-10+1/20
1/v=-2+1/20
1/v=-1/20
v=-20
The image will form 20 cm behind the mirror
u=10cm
f=20cm
By mirror formula
1/-f=1/-u+1/-v
1/-20=1/-10+1/-v
1/v=1/-10+1/20
1/v=-2+1/20
1/v=-1/20
v=-20
The image will form 20 cm behind the mirror
Answered by
8
Answer:
Nature- Virtual and erect
Position- The image is formed at a distance of 20 cm behind the mirror.
Size- Image size is 6 cm
Attachments:
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