MCQ
Electromagnetic radiation of highest frequency is
- AInfrared radiations
- BVisible radiation
- CRadio waves
- ✓$\gamma$-rays
✓
Answer
Correct option: D.
$\gamma$-rays
d
(d)${\nu _{\gamma - rays}} > {\nu _{{\rm{visible radiation}}}} > {\nu _{{\rm{Infrared}}}} > {\nu _{{\rm{Radio waves}}}}$
(d)${\nu _{\gamma - rays}} > {\nu _{{\rm{visible radiation}}}} > {\nu _{{\rm{Infrared}}}} > {\nu _{{\rm{Radio waves}}}}$
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
In the given circuit, an ideal voltmeter connected across the $10\,\Omega $ resistance reads $2\, V$. The internal resistance $r$, of each cell is ................... $\Omega$
→Which of the following pairs has quantities of the same dimensions?
A radioactive sample has an average life of $30\, {ms}$ and is decaying. A capacitor of capacitance $200\, \mu\, {F}$ is first charged and later connected with resistor $^{\prime}{R}^{\prime}$. If the ratio of charge on capacitor to the activity of radioactive sample is fixed with respect to time then the value of $^{\prime}R^{\prime}$ should be $....\,\Omega$
→There is a uniform magnetic field $B$ normal to the $xy$ plane. $A$ conductor $ABC$ has length $AB = l_1$, parallel to the $x$ -axis, and length $BC = l_2$, parallel to the $y$ -axis. $ABC$ moves in the $xy$ plane with velocity ${v_x}\hat i + {v_y}\hat j$. The potential difference between $A$ and $C$ is proportional to
→A square loop of wire, side length $10\, cm$ is placed at an angle of $45^o$ with a magnetic field that changes uniformly from $0.1\, T$ to zero in $0.7\, seconds$. The induced current in the loop (its resistance is $1\,\Omega $) is.....$ mA$
→An electron is revolving around a proton in a circular orbit of diameter $0.1 \ nm$ . It produces a magnetic field of $14 Wb / m ^2$ at the proton. What is angular speed of the electron?
→The threshold frequency of a photoelectric metal is $\nu_0$. If light of frequency $4\nu_0$ is incident on this metal, then the maximum kinetic energy of emitted electrons will be $.......h\nu_0$
→Two wires of the same material are given. The first wire is twice as long as the second and has twice the diameter of the second. The resistance of the first will be
Filter circuit:
A solenoid of length $l$ metre has self-inductance $L$ henry. If number of turns are doubled, its self inductance
→