If the wavelength of an electron emitted from $\mathrm{H}-$ atom is $3.3\times {10}^{-10} \mathrm{m}$, then energy absorbed by the electron in its ground state compared to the minimum energy required for its escape from the atom, is____times.
[Given : $\mathrm{h}=6.626\times {10}^{-34}\mathrm{Js}$, Mass of electron $=9.1\times {10}^{-31}$], Give an answer to the nearest integer value.

Given below are the quantum numbers for $4$ electrons.

A. $\mathrm{n}=3,\mathrm{l}=2,{\mathrm{m}}_1=1,{\mathrm{m}}_{\mathrm{s}}=+\frac{1}{2}$

B. $\mathrm{n}=4,\mathrm{l}=1,{\mathrm{m}}_1=0,{\mathrm{m}}_{\mathrm{s}}=+\frac{1}{2}$

C. $\mathrm{n}=4,\mathrm{l}=2,{\mathrm{m}}_1=-2,{\mathrm{m}}_{\mathrm{s}}=-\frac{1}{2}$

D. $\mathrm{n}=3,\mathrm{l}=1,{\mathrm{m}}_1=-1,{\mathrm{m}}_{\mathrm{s}}=+\frac{1}{2}$

The correct order of increasing energy is

Following figure shows spectrum of an ideal black body at four different temperatures. The number of correct statement/s from the following is _______.

A. T₄ > T₃ > T₂ > T₁
 B. The black body consists of particles performing simple harmonic motion.
 C. The peak of the spectrum shifts to shorter wavelength as temperature increases.
 D. $\frac{{\mathrm{T}}_1}{{\mathrm{\nu }}_1} = \frac{{\mathrm{T}}_2}{{\mathrm{\nu }}_2} = \frac{{\mathrm{T}}_3}{{\mathrm{\nu }}_3}$
 E. The given spectrum could be explained using quantisation of energy

The number of given orbitals which have electron density along the axis is

${\mathrm{p}}_{\mathrm{x}},{\mathrm{p}}_{\mathrm{y}},{\mathrm{p}}_{\mathrm{z}},{\mathrm{d}}_{\mathrm{xy}},{\mathrm{d}}_{\mathrm{yz}},{\mathrm{d}}_{\mathrm{xz}},{\mathrm{d}}_{\mathrm{z}}^2,{\mathrm{d}}_{{\mathrm{x}}^2-{\mathrm{y}}^2}$