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In an experiment to find focal length of...

In an experiment to find focal length of a concave mirror a graph is drawn. The graph looks like ...........

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
C
For concave mirror
object distance u, image distance v and focal length f
`u=(alpha)` when v=f
u=2f(object on centre of curvature)
v=2f
and when u=f then v=`infty` (infinite)
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KUMAR PRAKASHAN-RAY OPTICS AND OPTICAL INSTRUMENTS-SECTION-D (MULTIPLE CHOICE QUESTIONS (MCQs))(MCQs FROM .DARPAN. BASED ON TEXTBOOK)
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  2. If a ray of light is incident on a plane mirror at an angle of 30^@, t...

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  3. An object is placed at a distance of 25 cm on the axis of a concave mi...

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  4. For a thin convex lens when the heights of the object is double than i...

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  5. A point object O is placed midway between on the common axis of two co...

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  6. For ..... mirror, height of image is always ...... than height of obje...

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  7. An object is placed at a distance 40 cm in front of concave mirror. Fo...

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  8. A convex mirror having focal length 20 cm is used as side glass in car...

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  9. In which of the following mirrors can a person not see a reflection la...

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  10. Object is placed 60 cm away from convex mirror. If magnification is 0....

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  11. Lateral magnification of an object by spherical mirror is 0.3. If foca...

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  12. Plane mirror is moving towards you at 5 cm//s. You can see your image ...

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  13. PQ type incident radiation and RS is the reflected ray. They are both ...

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  14. Focal length of concave mirror is f and ratio of heights of object to ...

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  15. If f is focal length and v is image distance for spherical mirror, the...

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  16. If f is focal length and u is object distance for spherical mirror, th...

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  17. If image obtained from concave mirror of focal length f is (1/n)^(th) ...

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  18. An image of an object obtained by a convex mirror is n times smaller t...

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  19. If real image obtained from concave mirror of focal length f is n time...

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  20. In an experiment to find focal length of a concave mirror a graph is d...

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