Maximum frequency in the spectrum from X-ray tube is directly proportional to the______________? A. Number of incident electron i.e. filament currentB. The kinetic energy of the incident electron i.e. the potential difference through which they are accelerated C. The soft…

The minimum wavelength of X-rays produced by the bombardment of electrons on the screen of a television set where the accelerating potential is 2.0K V will be______________? A. 6.2 x 10-10m B. 9.1 x 10-18m C. 3.11 x 10-10m D.…

The characteristic X-rays spectrum is due to_____________? A. The illumination of the target metal by ultra-violet radiation B. The bombardment of the target by protonsC. The bombardment of target by electrons D. The absorption of radiation by the target metal

The minimum wavelength of X-rays can further be reduced by _______________? A. Reducing the pressure or cooling the target B. Increasing the temperature of the filament. C. Using a target element of higher atomic numberD. Increasing the potential difference between…

Radiation produced from TV picture tube is_____________? A. B-raysB. X-rays C. Far infrared D. Infrared

In an X-ray tube electrons each of charge e are accelerated through V potential difference allowed to hit a metal target. The wavelength of the X-rays emitted is_______________? A. he/ev B. he/Vc C. eV/h D. impossible to predict

Quality of X-rays depends upon ____________ A-filament current B-accelerating voltage C-material of the target ? A. A & BB. B & C C. A & C D. A B & C

When X-rays are passed through successive aluminum sheets what happens to their thickness ? A. increases B. it decreasesC. it remains same D. sometimes increases and sometimes decreases

X-rays are similar in nature to_______________? A. Cathode rays B. Positive raysC. γ-rays D. Beta rays

In an electronic transition atom cannot emit______________? A. γ-rays B. Infra red radiation C. Visible light D. Ultraviolet rays