Question

10. Explain an experiment to show convex lens converges light rays.

OR

i) Refractive index of a benzene is 1.50. What does it mean?

ii) In which direction the light bends when it moves from air into benzene solution?

11. What is a solar cell? List out the uses of solar cell and its limitations.

V. Answer the following questions: 4x2=8

12. i) How fuse is helpful in domestic electric circuits?

ii) Why does the cord of an electric heater not glow while the heating element does?

13. a) Name the rule used to find direction of induced current in generator and define it.

b) How can we increase electric current in generator?

OR

Write the construction and working of a generator.​

Answer 1

Explanation:

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