Copy and complete the following table : Type of lens Position of object Nature of image Size of image Convex At F Concave At infinity

Type of lens Position of object Nature of image Size of image Convex At F Virtual Magnified Concave At infinity Virtual Diminished Convex lens is also known as converging lens because it converges the incoming rays of light. Convex (converging) lenses can form either real or virtual images. When object is placed at F of convex lens image formation is as follows: Nature of image is virtual and the size of the image is larger than object. Now, Concave lens is also known as diverging lens as it diverges the incoming rays that are refracted through the lens and forms diminished, upright and virtual images. When object is at infinity of concave lens image formation is as follows: Nature of image is virtual and size is point-sized.

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Self Study in Physics>Chapter 13 - Practice Papers for Revision>PRACTICE PAPER - 1>Q 2

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10th ICSE

IMPORTANT

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Draw a labelled diagram of an A.C. generator.

Important Questions on Practice Papers for Revision

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Self Study in Physics>Chapter 13 - Practice Papers for Revision>PRACTICE PAPER - 1>Q 2

State the function of a split ring in a D.C. motor.

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Self Study in Physics>Chapter 13 - Practice Papers for Revision>PRACTICE PAPER - 1>Q 2

Mention two reasons why a soft iron core is used within the coil of an electromagnet.

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Self Study in Physics>Chapter 13 - Practice Papers for Revision>PRACTICE PAPER - 1>Q 2

Sometimes when a vehicle is driven at a particular speed, a rattling sound is heard. Explain briefly, why this happens and give the name of the phenomenon taking place.

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Self Study in Physics>Chapter 13 - Practice Papers for Revision>PRACTICE PAPER - 1>Q 2

Copy and complete the following table :