An object of height 20 cm is kept at a distance of 48 cm in front of a mirror of focal length 12cm. . If the mirror forms a virtual, diminished image of the object then calculate:
(i) the distance of the image from the mirror.
(ii) its magnification.
its urgent
Answers
Answered by
25
GIVEN :
- Height of an object = 20 cm
- Distance = 48 cm
- Focal length = 12 cm
- Mirror forms the virtual and diminished image of the object.
TO FIND :
- The distance of the image from the mirror.
- Magnification = ?
FORMULAS USED :
- Mirror formula =
- Magnification =
SOLUTION :
To find, the distance of the mirror from the image.
Using mirror formula :
The distance of the image from the mirror is -16.
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Now,
To find the magnification = ?
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Answered by
3
Answer:
Magnification : 1/3 , Distance of the image from the mirror : -16 ..
Explanation:
(I) Distance of the image from the mirror :
1/v = 1/f -1/u
1/v = 1/-12 - 1/-48
1/v = -4+1/48
1/v = -3/48
1/v = -1/16
[1/v = -16]
(II) Magnification :
-v/u = -(-16)/48
= 16/3
= 1/3
•°• [Magnification = 1/3]
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