Explain the construction and working of Westron standard cell.

Explain the construction and working of an astronomical telescope. Calculate its magnifying power when the image is formed at the least distance of distinct vision.

Explain the construction of a mercury thermometer.

Describe the principle, construction and working of an AC generator.

Explain how the human ear works.

Write the working of mercury dry cell

Explain the working of a refrigerator.

Explain the term cell constant.

Explain the working of lead storage battery.

Explain the mechanism of transcription in a prokaryotic cell.

Explain the working of the inner ear.