Explain the construction and working of a
- explain the construction and working of a solar cell
- explain the construction and working of a clinical thermometer
- explain the construction and working of a spring balance
- explain the construction and working of a fire extinguisher
- explain the construction and working of a thermos flask
- explain the construction and working of a compound microscope
- explain the construction and working of a dry cell
- explain the construction and working of a transformer
- explain the construction and working of a pinhole camera
- explain the construction and working of a hydrometer with diagram
