Describe construction and working of photoelecric cell.

Describe the construction and working of an electric bell with the help of a diagram.

With a neat diagram, describe the construction of a photoelectric cell.

Write a note on optical fibre with necessary. Diagram essential. State its Advantages. OR Describe construction and working of an optical fibre. What are the advantages of optical fibre communicationover electronic communication?

Explain the construction and working of solar cell?

Explain the construction and working of photodiode

Describe the construction and working of compound microscope.

With the help of neat labelled diagram, describe construction, theory and working of a moving coil galvanometer.

Explain the construction and working of Aled.

Answer the following questions : With a neat labelled diagram , explain the construction and working of an electric motor.

Answer the following questions : Explain the construction and working of an electric motor. Draw a neat diagram and label it.