Question

Chadwick was able to prove that:

• A. the radiation causing the ejected particles was much more energetic than could be accounted for by photons
• B. the radiation causing the ejected particles was much less energetic than could be accounted for by photons
• C. the radiation causing the ejected particles was much more energetic than could not be accounted for by photons
• D. the radiation causing the ejected particles was much less energetic than could not be accounted for by photons

Answer 1

The correct option is A the radiation causing the ejected particles was much more energetic than could be accounted for by photons

Chadwick was able to prove that the radiation causing the ejected particles was much more energetic than could be accounted for by photons. Initially it was though that the radiation must be gamma rays. But the radiations differed in interaction with hydrocarbons and with elements like helium, lithium, carbon, oxygen, nitrogen etc.