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A student measures the focal length of a...

A student measures the focal length of a convex lens by putting an object pin at a distance `u` from the lens and measuring the distance `v` of the image pin. The graph between `u` and `v` plotted by the student should look like

A

B

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D

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CP SINGH-REFRACTION AT SPHERICAL SURFACES-EXERCISES
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  4. The graph between the lateral magnification (m) produced by a lens and...

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  5. For a convex lens, if real image is formed the graph between (u+v) and...

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  6. Diameter of a plano-convex lens is 6cm and thickness at the centre is ...

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  7. An object is placed at a distance x1 from the principal focus of a len...

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  8. A point object O is placed on the principal axis of a convex lens of f...

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  9. An illuminated object is placed on the principal axis of a converging ...

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  11. When a biconvex lens of glass having refractive index 1.47 is dipped i...

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  12. A convex lens if in contact with concave lens. The magnitude of the ra...

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  13. Two plano-concave lenses (1 and 2) of glass of refractive index 1.5 ha...

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  14. Two similar planoconvex lenses are combined together in three differen...

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  15. A convex lens of focal length 40 cm a concave lens of focal length 40 ...

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  16. Two thin lenses of powers 2D and 3D are placed in contact. An object i...

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  17. A real image is formed by a convex lens. If we put a concave lens in c...

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  18. A beam of parallel rays is brought to focus by a planoconvex lens. A t...

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  19. A concave lens and a convex lens have same focal length of 20 cm and b...

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  20. A bi-convex lens is formed with two thin plano-convex lenses as shown ...

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