MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Mirror Formula and Magnification

The expressio...

Question

The expression for the magnification of a spherical mirror in terms of focal length (f) and the distance of object from the mirror(u) is what?

Open in App

Solution

Magnification, m = – v/u
Mirror formula is 1/f = 1/v + 1/u

or, 1/v = 1/f – 1/u

or, v = uf / (u -f)

Therefore, m = v/u = f /( u -f)

Suggest Corrections

thumbs-up

6

Similar questions

Q. A spherical mirror forms an image of magnification

3

. The object distance, if focal length of mirror is

24 c m

Q. A spherical mirror forms an image of magnification

3

for a real object. If the focal length of the mirror is

24 cm

, then the object distance may be

Q. Assertion :The focal length of the concave mirror is

f

and distance of the object from the focus is

u

. The magnification of the image will be

f / u

Reason: Magnification=

\frac{s i z e o f o b j e c t}{s i z e o f i m a g e}

u

represents object distance from pole of spherical mirror and

v

represents image distance pole of mirror and

f

is the focal length or the mirror, then a straight line

u = v

u

v

Q. If for a spherical mirror object distance,

u = (50.1 \pm 0.5) c m

and image distance

v = (20.1 \pm 0.2) c m

, then focal length of the spherical mirror will be

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Mirror Formula and Magnification

PHYSICS

Watch in App

explore_more_icon

Explore more

Mirror Formula and Magnification

Standard X Physics

Join BYJU'S Learning Program

CrossIcon