The object distance $(u)$ , image distance $(v)$ and the focal length $(f)$ of a lens are related as:

f = v - u

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f = v + u

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\frac{1}{f} = \frac{1}{v} - \frac{1}{u}

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\frac{1}{f} = \frac{1}{v} + \frac{1}{u}

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Solution

The correct option is C $\frac{1}{f} = \frac{1}{v} - \frac{1}{u}$
The object distance $(u)$ , image distance $(v)$ and the focal length $(f)$ of a lens are related as,
$\frac{1}{f} = \frac{1}{v} - \frac{1}{u}$
This is the lens formula.

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Similar questions

Q. The focal length

f

of a mirror is given by

\frac{1}{f} = \frac{1}{u} + \frac{1}{v}

, where

u

and

v

represent object and image distances, respectively

Q. What are conjugate foci? Deduce the following relationship between the focal length

f

, of a spherical mirror, distance of object of u and distance of image v.

\frac{1}{u} + \frac{1}{v} = \frac{1}{f}

The focal length f of a mirror is given by $\frac{1}{f} = \frac{1}{u} + \frac{1}{v}$ where u and v represent object and image distances respectively. The fractional error in 'f' is given by

Q. According to lens formula, the focal length (f) of a lens is given by:
Object distance:

u

Image distance:

v

Q. Select the correct lens formula where

u, v, f

have standard meanings.

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The object distance (u), image distance (v) and the focal length (f) of a lens are related as:

The correct option is C 1f=1v−1uThe object distance (u), image distance (v) and the focal length (f) of a lens are related as, 1f=1v−1u This is the lens formula.

The object distance $(u)$ , image distance $(v)$ and the focal length $(f)$ of a lens are related as:

The correct option is C $\frac{1}{f} = \frac{1}{v} - \frac{1}{u}$
The object distance $(u)$ , image distance $(v)$ and the focal length $(f)$ of a lens are related as,
$\frac{1}{f} = \frac{1}{v} - \frac{1}{u}$
This is the lens formula.