[3 Mark Questions]

Question 13 Marks

An electric lamp whose resistance is $2002$ and a resistor of $402$ resistance are connected in parallel in a electric circuit.
(A battery of $6 ~V$ is connected in the circuit.)$(a)$ Calculate the total resitance of the circuit.$(b)$ Calculate the electric current passing through the circuit. $(c)$ Calculate the potential difference the electric lamp.

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Question 23 Marks

What is called power of lens? State the $SI$ unit of power of lens and write the formula relating the power of lens and focal length of the lens,

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Question 33 Marks

Which three rays are used to locate the image formed by a spherical lens ? Explain by drawing diagram.

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Question 43 Marks

Answer the following questions:
$(1)$How is the process of pollination defferent from fertilisation ?
$(2)$ How does the embryo nutrishment inside the mother's body?
$(3)$ What could be the reasons for adopting contraceptive method?

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Question 53 Marks

Explain male reproductive system with diagram.

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Question 63 Marks

Draw a diagram showing the structure of nerve cell and describe its functions.

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