Question
Write a short note on magnification produced by a mirror.
✓
Answer
Magnification produced by a spherical mirror gives the relative extent to which the image of an object is magnified with respect the object size.
→The ratio of the height of the image to he height of the object is called magnification.
→ It is usually represented by the letter m.
→If his the height of the object and h' is the height of the image, then the magnification m produced by a spherical mirror is given by.
...... (9.5)
→The magnification m is also related to the object distance u and image distance . It can be expressed as:
$m=-\frac{0}{n}$ ...... (9.6)
→As the object is usually pinced above the principal axis, the height the object, measured upwards, is taken to be positive.
→The height of the image should be taken as positive for virtual images, while it is to be taken as negative for real images.
→A negative (minus) sign in the value of the magnification indicates that the image is real.
→A positive (plus) sign in the value of the magnification indicates that the image is virtual.
→The ratio of the height of the image to he height of the object is called magnification.
→ It is usually represented by the letter m.
→If his the height of the object and h' is the height of the image, then the magnification m produced by a spherical mirror is given by.
...... (9.5)→The magnification m is also related to the object distance u and image distance . It can be expressed as:
$m=-\frac{0}{n}$ ...... (9.6)
→As the object is usually pinced above the principal axis, the height the object, measured upwards, is taken to be positive.
→The height of the image should be taken as positive for virtual images, while it is to be taken as negative for real images.
→A negative (minus) sign in the value of the magnification indicates that the image is real.
→A positive (plus) sign in the value of the magnification indicates that the image is virtual.
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