MCQ
Fraunhofer spectrum is a
- ✓Line absorption spectrum
- BBand absorption spectrum
- CLine emission spectrum
- DBand emission spectrum
✓
Answer
Correct option: A.
Line absorption spectrum
a
(a) The atoms in the chromosphere absorb certain wavelengths of light coming from the photosphere.
(a) The atoms in the chromosphere absorb certain wavelengths of light coming from the photosphere.
This gives rise to absorption lines.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
$_6^{12}C$ absorbs an energetic neutron and emits beta particles. The resulting nucleus is
→If an electron revolves in the path of a circle of radius of $0.5 \times 10^{-10} \mathrm{~m}$ at frequency of $5 \times 10^{15} \mathrm{cycles} / \mathrm{s}$ the electric current in the circle is (Charge of an electron $=1.6 \times 10^{-19} \mathrm{C}$ )
→What will be the magnitude of electric field at point $O$ as shown in figure ? Each side of the figure is $I$ and perpendicular to each other.
→When a piece of a ferromagnetic substance is put in a uniform magnetic field, the flux density inside it is four times the flux density away from the piece. The magnetic permeability of the material is
An aeroplane, with its wings spread $10\, m ,$ is flying at a speed of $180 \,km / h$ in a horizontal direction. The total intensity of earth's field at that part is $2.5 \times 10^{-4}\, Wb / m ^{2}$ and the angle of dip is $60^{\circ}$. The emf induced between the tips of the plane wings will be ...... $mV$
→A charge of 40 μC is given to a capacitor having capacitance C = 10 μF. The stored energy in ergs is
A radio isotope has a half life of 75 years. The fraction of the atoms of this material that would decay in 150 years will be
Davission and Germer experiment proved
$LED$ is constructed from $Ga-As-P$ semiconducting material. The energy gap of this $LED$ is $1.9\, eV$. Calculate the wavelength of light emitted and its colour.
→$\left[ h =6.63 \times 10^{-34} \;Js \right.$ and $\left. c =3 \times 10^{8}\; ms ^{-1}\right]$
The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom is