A radioactive atom M emits two a particles and one B particle successively. The number of neutrons in the nucleus of the product will be
X - 4 - Y
X - Y - 5
X - Y - 3
X - Y - 6
For a particular value of azimuthal quantum number, the total number of magnetic quantum number values are given by
l =
l =
l =
m =
With what velocity should an -particle travel towards the nucleus of a copper atom to arrive at a distance of 10-13m from the nucleus of the copper atom?(K = 9x 109 Nm2/C2 (Mass of -particle = 6.64 x 10-27kg).
634 x 106 ms-1
634 x105 ms-1
5.34 x 106 ms-1
534 x 105 ms-1
A.
634 x 106 ms-1
The potential energy of the -particle at a distance of 10-13 m from the nucleus of the copper atom is
What is the ratio of the velocities of CH4 and O2 molecules so that they are associated with de-Broglie waves of equal wavelengths?
1:2
2: 1
3: 2
1: 2
The ratio of slopes of Kmax vs V and V0 vs v curves in the photoelectric effects gives (v = frequency, Kmax = maximum kinetic energy, v0 = stopping potential)
the ratio of Planck's constant of electronic charge
work function
Planck's constant
charge of electron
A certain metal when irradiated by light (r = 3.2 × 1016 Hz) emits photoelectrons with twice kinetic energy as did photoelectrons when the same metal is irradiated by light (r = 2.0 × 1016 Hz). The v0 of metal is
1.2 × 1014 Hz
8 × 1015 Hz
1.2 × 1016 Hz
4 × 1012 Hz
A radioactive element X emits 3, 1 and 1-particles and forms 76Y235. Element X is
81X247
80X247
81X246
80X246