A spherical mirror and a thin spherical lens have each a focal length of –15 cm. The mirror and the lens are likely to be

Sign Convention for Spherical Mirrors, Sign Convention for Spherical Lenses | PadhAiPro

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MCQ (Single)Sign Convention for Spherical MirrorsSign Convention for Spherical Lenses

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The power of a lens 'X' is – 2·5 D. Name the lens and determine its focal length in cm. For which eye defect of vision will an optician prescribe this type of lens as a corrective lens ?

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"The value of magnification 'm' for a lens is – 2." Using new Cartesian Sign Convention and considering that an object is placed at a distance of 20 cm from the optical centre of this lens, state :

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The numerical values of the focal lengths of two lenses A and B are 10 cm and 20 cm respectively. Which one of the two will show higher degree of convergence/divergence ? Give reason to justify your answer.

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Draw a ray diagram to show the refraction of a ray of light through a rectangular glass slab when it falls obliquely from air into glass.

State Snell's law of refraction of light.

Differentiate between the virtual images formed by a convex lens and a concave lens on the basis of :