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
Advertisement
Related Mcqs:
- 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. 4 x 10-10m...
- 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...
- Wavelength of X-rays falling at glancing angle of 30? on a crystal with atmic spacing 2 x 10-10 for the fist order diffraction is________________?
- A. 4 x 10-10 m B. 2 x 10-10 m C. 0.02×10-10m D. 20×10-10m...
- Product of wavelength and time period is _______________?
- A. Frequency B. Velocity C. Time period D. Wavelength Submitted by: Chakar Hussain Shar...
- Radiation with wavelength longer than red lights______________?
- A. ultraviolet rays B. X-rays C. infra red radiation D. visible radiation...
- Hydrogen atom does not emit X-rays because _________________?
- A. its energy levels are too close to each other B. its energy levels are too far apart C. it is too small in size D. it has a single electron...
- X-rays are similar in nature to_______________?
- A. Cathode rays B. Positive rays C. γ-rays D. Beta rays...
- When X-rays are passed through successive aluminum sheets what happens to their thickness ?
- A. increases B. it decreases C. it remains same D. sometimes increases and sometimes decreases...
- 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 protons C. The bombardment of target by electrons D. The absorption of radiation by the target metal...
- X-rays are diffracted by a crystal but not by a diffraction grating because_____________?
- A. The ions in a crystal are well arranged B. The lines in a diffraction grating cannot reflect X-rays. C. The penetration power of X-rays is high in a diffraction grating D. The wavelengths of X-rays are of the same order of magnitude as the separation between atoms in a crystal...
Advertisement
