Atomic Spectra

A. ultraviolet rays
B. X-rays
C. infra red radiation
D. visible radiation

A. pair production
B. Compton effect
C. annihilation of matter
D. X-rays production

A. applied voltage
B. frequency
C. source
D. all of the above

A. 4th orbit
B. 5th orbit
C. 3rd orbit
D. 2nd orbit

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

A. continuous spectra for atoms
B. discrete spectra for atoms
C. either continuous nor discrete
D. no spectrum

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

A. 1st to 5th orbit
B. 2nd to 5th orbit
C. 3rd to 5th orbit
D. 4th to 5th orbit