Question

Describe an experiment to show:

1.Electrolysis of water
2.Laws of reflection of light

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Answer 1

Electrolysis of water is the process by which water is decomposed into oxygen and hydrogen gas, when electric current is passed through it. Water molecule is decomposed in to H+ and OH- ions, when electric current is passed through it.

Answer 2

Answer:

$\huge \green{1}$

Take a glass beaker fix two electrodes. The positive electrode acts as anode &negative electrode act as cathode. Fill 1/3 of beaker with water. ... Oxygen gas is evolved at anode and hydrogen gas released at cathode.

Explanation:

$\huge \red{2}$

(i) The incident ray, the reflected ray and the normal at the point of incidence, lie in the same plane. (ii) The angle of incidence and angle of reflection are equal i.e. ∠i = ∠r. Take a wooden drawing board and fix a white sheet of paper on it. In the middle of paper draw a straight line KK\ Mark a point B on it.