MCQ
The frequency order of for $\gamma-$ rays $(b)\; X-$ rays $(a)\; UV-$ rays $(c)$
- ✓$b > a > c$
- B$a > b > c$
- C$c > b > a$
- D$a > c > b$
✓
Answer
Correct option: A.
$b > a > c$
a
(a)${\nu _{\gamma - rays}} > {\nu _{X - rays}} > {\nu _{UV - rays}}$
(a)${\nu _{\gamma - rays}} > {\nu _{X - rays}} > {\nu _{UV - rays}}$
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
A prism of refractive index $\sqrt2$ refracting angle $A$ produces minimum deviation $D_m$ of a ray on one face at an angle of incidence $45^o$ . The values of $A$ and $D_m$ are respectively
→If a star emitting yellow light is accelerated towards earth, then to an observer on earth it will appear?
In the adjoining figure the impedance of the circuit will be.....$ohm$
→A point source of $100$ candela is held $5\,m$ above a sheet of blotting paper which reflects $75\%$ of light incident upon it. The illuminance of blotting paper is
→The loop shiwn moves with a constant velocity $'V'$ in uniform magnetic field of magnetic $'B'$ directed in to the paper. The potential difference between $P$ and $Q$ is
→In one average$-$life:
→$A$ current passes through a wire of nonuniform cross section. Which of the following quantities are independent of the cross-section?
→Whenever light travels from denser medium to a rarer medium:
A long straight wire with a circular crosssection having radius $R$, is carrying a steady current $I$. The current I is uniformly distributed across this cross-section. Then the variation of magnetic field due to current I with distance $r\;( r < R )$ from its centre will be
→$X-$ rays of wavelength $0.1\ Å$ allowed to fall on a metal get scattered. The wavelength of scattered radiation is $0.111\ Å$. If $h = 6.624$ $ \times $ $10^{-34} J-s$ and $m_0$ = 9 $ \times $ $10^{-31}$ $kg$, then the direction of the scattered photons will be
→