Describe an experiment to show that water movement occurs through xylem.

Cite an experiment to show that sound needs a material medium for its propagation.

Describe Davisson and Germer experiment to establish the wave nature of electron. Draw labelled diagram of the apparatus used.

Describe an activity to show that thermplastic is a poor conductor of electricity.

Describe an experiment which enables you to measure the displacement produced in a ray of light by a rectangular glass slab.

In a potentiometer experiment, it is found that no current passes through the galvanometer, when the terminals of a cell are connected across 50 cm of the potentiometer wire. If the cell is shunted by a resistance of 5 ohm, the balance point is found at 40 cm of the wire from the same end. Find the internal resistance of the cell.

Describe an activity to show the recombination of the spectrum of white light.

Describe Milikan's oil drop experiment to determine the charge of an electron.