Photoelectric EffectHard
Question
A lamp is at a height of 4 m from a table. If the height is increased by 1 m, the illumination on the table will decrease by :
Options
A.20%
B.40%
C.64%
D.36%
More Photoelectric Effect Questions
In an x-ray tube the voltage applied is 20KV. The energy required to remove an electron from L shell is 19.9 KeV. In the...A photon in motion has a mass equal to :...The wavelength of the first line in balmer series in the hydrogen spectrum is λ. What is the wavelength of the seco...A radio station is broadcasting the waves of wave length 300 meter. If the radiating power of transmitter is 10 kW, then...What determines the hardness of the X-rays obtained from the Coolidge tube :-...