1. Q.31

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  2. (i) State the law that explains the heating effect of current with respect to the measurable properties in an electrical circuit. (ii) List the factors on which the resistance of a conductor depends.

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  3. Anannya responded to the question: Why do electrical appliances with metallic bodies are connected to the mains through a three pin plug, whereas an electric bulb can be connected with a two pin plug? She wrote: Three pin connections reduce heating of connecting wires. (i) Is her answer correct or incorrect? Justify. (ii) What is the function of a fuse in a domestic circuit?

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  4. Q.34

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  5. Q.34

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  6. A doctor has advised Sameer to reduce sugar intake in his diet and do regular exercise after checking his blood test reports.

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  7. Given below are certain situations. Analyze and describe its possible impact on a person:

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  8. The above image shows a thin lens of focal length 5m.

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  9. A 10 cm long pencil is placed 5 cm in front of a concave mirror having a radius of curvature of 40 cm.

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  10. The above image shows a thin lens of focal length 5m.

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  11. The table given below shows the hints given by the quiz master in a quiz.

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  12. Figures (a) to (d) given below represent the type of ear lobes present in a family consisting of 2 children – Rahul, Nisha and their parents.

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