1st PUC physics Series-2

PUC Science 1st Year Physics Series-2 quiz

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1st PUC Physics Series 2

TEST YOUR KNOWLEDGE OF SCIENCE

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Q.11 A lens which converges a beam of parallel rays to a point is called

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Q.12 The diameter of a lens is called

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Q.13  In going from a denser to rarer medium a ray of light is

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Q.14 The power of a concave lens is

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Q.15 Magnifying power of a simple microscope

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Q.16 Magnification of astronomical telescope is

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Q.17 The magnifying power of an astronomical telescope is 10 and the focal length of its eye-piece is 20 cm. The focal length of its objective will be

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Q.18 The magnifying power of a telescope is 9. When it is adjusted for parallel rays, the distance between the objective and the eye-piece is found to be 20 cm. The focal lengths of the lenses are

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Q.19 In a compound microscope, magnifying power is 95 and the distance of the object from the objective lens is 1/38 cm. The focal length of the objective lens ¼ cm. What is the magnification of eyepiece?

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Q.20 A hypermetropic person having “near point” at a distance of 0.75 m puts on spectacles of power 2.5 D. The “near point” now is at

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