DUAL NATURE OF MATTER AND RADIATION - Topic Wise Multiple Choice Questions (MCQ)
Topic Wise free Dual Nature of Matter and Radiation MCQ and solutions for 11th 12th exam Practice Multiple Choice Questions and answer for JEE-mains State CET Engineering Entrance GATE free Online Test
Particle A and B have electric charge + q and + 4 q. Both have mass m. If both are allowed to fall under the same p.d., ratio of velocities (VA / VB) = …………
Energy of photon having wavelength λ is 2 eV. This photon when incident on metal. Maximum velocity of emitted is V. If λ is decreased 25% and maximum velocity is made double, work function of metal is……….eV
When electric bulb having 100 W efficiency emits photon having wavelength 540 nm every second, numbers of photons will be……..(h = 6 × 10–34 J.s, c = 3 × 108 ms–1)
If velocity of free electron is made double, change in its de-Broglie wavelength will be……..
de-Broglie wavelength of proton accelerated under 100 V electric potential difference is λ0. If de-wave length α-particle accelerated by the same electric potential difference what will its bouglie wavelength……….