Physics MCQs

A. Photo electric effect
B. Ionization
C. Shadow photograph
D. Any of above

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 light

A. Continuous spectra for atoms
B. Discrete spectra for atoms
C. Either continuous nor discrete
D. No spectrum

A. 13.60 ev
B. 3.40 ev
C. 0.85 ev
D. 1.51 ev

A. Ke2/rn
B. Ke2/rn2
C. Àke2/rn
D. Àke2/rn2

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

A. Applied voltage
B. Frequency
C. Source
D. All of the above

A. Pair production
B. Compton effect
C. Annihilation of matter
D. X-rays production

A. Ultraviolet rays
B. X-rays
C. Infra red radiation
D. radiation

A. Γ-rays
B. Infra red radiation
C. light
D. Ultraviolet rays