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The relation between focal length f and ...

The relation between focal length `f` and radius of curvature `R` of a spherical mirror is.

A

f = R

B

f = R/2

C

f = 2 R

D

none of these

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • The relation between focal length and radius of curvature of a spherical mirror is

    A
    `f = (R)/(2)`
    B
    `R = (f)/(2)`
    C
    f = 2R
    D
    f = R

  • What is the relation between focal length and radius of curvature of a concave mirror?

    A
    `f=2 R`
    B
    `f=1/3 R`
    C
    `f=1/2 R`
    D
    `f= R^2`

  • The radius of curvature of a spherical mirror is equal to _____.

    A
    f-2
    B
    2f
    C
    f+2
    D
    f/2

    • Similar Questions

    Explore conceptually related problems

    What is the relation between focal length and radius of curvature of a concave mirror? Does the same relation hold for a covcave mirror?

    For a spherical mirror, (1)/(v) + 1/u = (1)/(f) =2/R , where u= distance of object from pole of mirror v= distance of image from pole of mirror f= focal length of mirror R= radius of curvature of mirror. This formula is known as mirror formula. It is applicable equally to convex mirror as well as concave mirror. Read the above passage and answer the following questions : (i) When we change u by moving the object, how is focal length f, affected? (ii) The radius of curvature of a spherical mirror is 40 cm. What is its focal length? (iii) Focal lenght of a mirror depends neither on u, nor on v. It depends only on radius of curvature of the mirror. What values of life do you learn from this fact?

    What is the centre of curvature of a spherical mirror ?

    A LASER source placed between two concave mirrors sends light rays as shown in the figure. If PQ and RS are parallel to the principal axis, determine the focal lengths and radius of curvatures of both the mirrors.

    The focal length f is related to the radius of curvature r of the spherical convex mirror by

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