A radiactive substance emits 100 beta particles in the first 2s and 50 beta
A radiactive substance emits 100 beta particles in the first 2s and 50 beta particles in the next 2s. The…
7 years ago
KA2013
A nucleus ᴢXᴬ emits an α- particle with velocity v. The recoil speed of the daughter
A nucleus ᴢXᴬ emits an α- particle with velocity v. The recoil speed of the daughter nucleus is Options (a)…
7 years ago
Pick out the correct statements from the following
Pick out the correct statements from the following I. Electron emission during β-decay is always accompanied by neutrons II. Nuclear…
7 years ago
λ₁ and λ₂ are used to illuminate the slits. β₁ and β₂ are the corresponding fringe
λ₁ and λ₂ are used to illuminate the slits. β₁ and β₂ are the corresponding fringe widths. The wavelength λ₁…
7 years ago
The concentric spheres of radii R and r have positive charges q₁ and q₂ with equal
The concentric spheres of radii R and r have positive charges q₁ and q₂ with equal surface charge densities. What…
7 years ago
Two metal spheres of radii 0.01m and 0.02m are given a charge of 15mC and 45mC
Two metal spheres of radii 0.01m and 0.02m are given a charge of 15mC and 45mC, respectively. They are then…
7 years ago
A small oil drop of mass 10⁻⁶kg is hanging in at rest between two plates seperated
A small oil drop of mass 10⁻⁶kg is hanging in at rest between two plates seperated by 1mm having a…
7 years ago
Two identical circular coils A and B are kept on a horizontal tube
Two identical circular coils A and B are kept on a horizontal tube side by side without touching each other.…
7 years ago
Masses of three wires of copper are in the ratio of 1:3:5 and their lengths
Masses of three wires of copper are in the ratio of 1:3:5 and their lengths are in the ratio of…
7 years ago
The ionisation energy of an electron in the ground state of helium atom is 24.6 eV.
The ionisation energy of an electron in the ground state of helium atom is 24.6 eV. The energy required to…
7 years ago