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Hockey’s Jadoogar – Dhyan Chand

Dhyan Chand popularly known as hockey's jadoogar. Dhyan Chand was born on 29th August, 1905 at Allahabad. His father was in the British Indian...
HomeLearnSciencePhoto-electric effect

Photo-electric effect

Photo-electric effect :
It is the phenomenon of emission of electrons by substances when irradiated with light of a frequency greater than a certain minimum threshold frequency.
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