Crocker Harris does not appear in the scene. Yet we know much of him. Explain.

A diver under water sees a bird in air, vertically above him. If the actual, height of the bird above the water surface is 'h' , then does it appear at the same height 'h' to the diver ? Explain giving reasons. If mu_(w) is the refractive index of water, find the shift in the bird's position as observed by the diver.

Why does ZnO appear golden yellow at high temperature ? Explain.

The reaction between H_(2)(g) and O_(2) (g) is highly feasible, yet allowing the gases to stand at room temperature in the same vessel does not lead to the formation of water. Explain.

The townhall building is situated close to Boojho’s house. There is a clock on the top of the townhall building which rings the bell every hour. Boojho has noticed that the sound of the clock appears to be much clearer at night. Explain.

The reactions between H_(2)(g) and O_(2)(g) is highly feasuble yet allowing the gases to stand at room tempertaure in the same vessel does not lead to the formation of water . Explain