A. The illumination of the target metal by ultra-violet radiation
B. The bombardment of the target by protons
C. The bombardment of target by electrons
D. The absorption of radiation by the target metal
The characteristic X-rays spectrum is due to Read More »
A. Reducing the pressure or cooling the target
B. Increasing the temperature of the filament.
C. Using a target element of higher atomic number
D. Increasing the potential difference between the cathode and the target
The minimum wavelength of X-rays can further be reduced by Read More »
A. B-rays
B. X-rays
C. Far infrared
D. Infrared
Radiation produced from TV picture tube is Read More »
A. increases
B. it decreases
C. it remains same
D. sometimes increases and sometimes decreases
A. Cathode rays
B. Positive rays
C. γ-rays
D. Beta rays
X-rays are similar in nature to Read More »
A. γ-rays
B. Infra red radiation
C. Visible light
D. Ultraviolet rays
In an electronic transition atom cannot emit Read More »
A. ultraviolet rays
B. X-rays
C. infra red radiation
D. visible radiation
Radiation with wavelength longer than red lights Read More »
A. pair production
B. Compton effect
C. annihilation of matter
D. X-rays production
Reverse process of photoelectric effect is Read More »
A. applied voltage
B. frequency
C. source
D. all of the above
The penetrating power of X-rays depends on their Read More »
A. 4th orbit
B. 5th orbit
C. 3rd orbit
D. 2nd orbit
Bracket series is obtained when all transition of electron terminate on Read More »
