Photoelectric EffectHard
Question
The mass number of a nucleus is
Options
A.always less than its atomic number
B.always more than its atomic number
C.always more than its atomic number
D.sometimes more than and sometimes equal to its atomic number
More Photoelectric Effect Questions
The illumination from the sun is greater at noon than in morning because :...A photocell is illuminated by a small bright source placed 1 m away. When the same source of light is placed m away, the...Two stars situated at distances of 1 and 10 light years respectively from the earth appear to possess the same brightnes...An X-ray tube operated at 20 kV radiates a continuous X-ray spectrum with a short wavelength limit (0.25). The value of ...A proton and an electron are accelerated by the same potential difference. Let λe and λp denote the de Broglie...