It is observed that when the cap of an uncharged electroscope is irradiated with light of high frequency, the leaf of the electroscope rises. Explain this observation.

23/7/2020

K.C.S.E Physics Q & A - MODEL 2014PP2QN06

It is observed that when the cap of an uncharged electroscope is irradiated with light of high frequency, the leaf of the electroscope rises. Explain this observation.

answer

(a) Electrons absorb enough energy and are ejected leaving the electroscope positively charged the leaf is repelled by the stem.

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It is observed that when the cap of an uncharged electroscope is irradiated with light of high frequency, the leaf of the electroscope rises. Explain this observation.

It is observed that when the cap of an uncharged electroscope is irradiated with light of high frequency, the leaf of the electroscope rises. Explain this observation.

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