A. continuous spectra for atoms
B. discrete spectra for atoms
C. either continuous nor discrete
D. no spectrum
A. Becomes double
B. Remains same
C. Becomes half
D. First increases then decrease because of the curvilinear graph
A. Heating the filament
B. Electron excitation in the gas
C. Ionization of atoms
D. All the above
A. an apparent increase in frequency
B. an apparent decrease in frequency
C. an apparent decrease in wavelength
D. no apparent change in frequency
A. capacitor
B. inductor
C. on switch
D. off switch
A. a straight line parallel to the field
B. a parabola in a plane perpendicular to the field
C. a circle in a plane perpendicular to the field
D. a straight line along its initial direction
A. electromagnetic image making
B. magnetic image making
C. thermal image making
D. electrostatic image making