The binding energy of the hydrogen atom (electron bound to proton)in its ground state is -13.6 eV. The  binding energy of positronium (electron bound to positron) is

Which one among the following denotes the lowest temperature?

Which one of the following is diamagnetic?

An object of density $$\left(\rho\right)$$    partially floats in a liquid with 75% of its volume submerged. The density of the liquid is

The trace and determinant of a 2x2 matrix is 6 and 8 respectively. Its Eigen values are

The eye defect that is corrected using a bifocal lens is?

A buck converter is used to

The Peak Inverse Voltage(PIV) of a full wave rectifier with capacitor input filter equals the

Identify the atom that can be doped with silicon to make it n-type Semiconductor

Which one of the following crystallographic planes represent (101) Miller indices of a cubic unit cell?

The Fermi-Dirac distribution function [𝑛(𝜀)] is (𝑘𝐵 is the Boltzmann constant, 𝑇 is the temperature and 𝜀𝐹 is the Fermi energy)

If $$\phi\left(x,y,z\right)$$ is a scalar function which satisfies the Laplace equation, then the gradient of $$\phi$$   is

In a heat engine based on the Carnot cycle, heat is added to the working substance at constant

Which one of the following arrangements of optical components can be used to distinguish between an unpolarised light and a circularly polarised light?

Let 𝑇_𝑔 and 𝑇_𝑒 be the kinetic energies of the electron in the ground and the third excited states of a hydrogen atom, respectively. According to the Bohr model, the ratio 𝑇_𝑔/𝑇_𝑒 is

The resultant of the Binary subtraction of 1110101 and 0011110 is

The equation $$z^2+\left(\overline{z}\right)^2\ =4$$  in the complex plane represents

The mass per unit length of a rod (length 2 m) varies as ρ = (3x) kg/m. The moment of inertia (in kg m² ) of the rod about a perpendicular-axis passing through the tip of the rod (at x = 0) is

A particle of mass m moving with velocity u₁ collides elastically with another particle of same mass moving with velocity u₂ in the same direction. After collision their speeds are v₁ and v₂ respectively then

(A) u₁ + v₁ = v₂ + u₂

(B) u₁ – v₁ = v₂ + u₂