Question

(a) Name the apparatus,
(b) What is it used for ?
(c) What is the role played by the air-bubble in this
experiment?
(d) What is the use of the reservoir ?
(e) What happens to the movement of the air-bubble
if the apparatus is kept :
(i) in the dark; (ii) in sunlight; (iii) in front of a
fan?
Give a reason in each case.​

Answer 1

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