Charge of electron was measured by__________________? A. J.J ThomsonB. Millikan C. Rutherford D. Perrin

Free neutron changes into proton with the emission of__________________? A. Neutrino B. ElectronC. Both A & B D. Meson

Increase in atomic number is observed during_________________? A. Alpha emissionB. Beta emission C. Both A & B D. Radioactivity

The number of fundamental particles in an atom of the lightest isotope carbon are_______________? A. 6 B. 12C. 18 D. 20

Atom cannot be divided into simple unitstheorized by________________? A. RutherfordB. Dalton C. Bohr D. Schrodinger

The velocity of the photon____________________? A. Is independent of wavelength B. Depends upon source C. Depends upon its frequency D. Equals to the square of amplitude

The relationship between energy of a photon of light and its frequency is given by________________? A. de-Broglie duel nature of matter B. Bohrs modelC. Plancks Quantum theory D. Rutherfords atomic model

Positive rays are produced__________________? A. By burning of gas B. By cooling of the gasC. By the bombardment of cathode rays on gas molecules D. From anode like cathode rays produced from cathode

Colour of fluorescene produced by cathode rays depends upon________________? A. Temperature B. Pressure C. VolumeD. Composition of glass

The atomic number of an element having maximum number of unpaired electrons in p-subshell is_______________? A. 7 B. 10 C. 12 D. 16