A. ultraviolet rays
B. X-rays
C. infra red radiation
D. visible radiation
Radiation with wavelength longer than red lights______________? Read More »
Atomic Spectra, Physics Mcqs A. pair production
B. Compton effect
C. annihilation of matter
D. X-rays production
Reverse process of photoelectric effect is_______________? Read More »
Atomic Spectra, Physics Mcqs A. applied voltage
B. frequency
C. source
D. all of the above
The penetrating power of X-rays depends on their______________? Read More »
Atomic Spectra, Physics Mcqs 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 »
Atomic Spectra, Physics Mcqs A. Ke2/rn
B. Ke2/rn2
C. ÀKe2/rn
D. ÀKe2/rn2
A. 13.60 eV
B. 3.40 eV
C. 0.85 eV
D. 1.51 eV
Ground state energy of the 4th orbit in a H-atom is_____________? Read More »
Atomic Spectra, Physics Mcqs A. continuous spectra for atoms
B. discrete spectra for atoms
C. either continuous nor discrete
D. no spectrum
Which one of following postulate is in accordance with the Rutherfords model ? Read More »
Atomic Spectra, Physics Mcqs A. radiate electromagnetic energy with a continuous distribution of wavelength
B. absorb particular wavelengths when white light is incident on them
C. radiate electromagnetic energy of discrete characteristic wavelength
D. emit either invisible or visible light
A. photo electric effect
B. ionization
C. shadow photograph
D. any of above
In obtaining an X-ray photograph of our hand we use the principle of______________? Read More »
Atomic Spectra, Physics Mcqs A. 1st to 5th orbit
B. 2nd to 5th orbit
C. 3rd to 5th orbit
D. 4th to 5th orbit
