MCQ
Which is the correct ascending order of wavelengths?
  • A
    $\lambda_{\text {visible }}<\lambda_{ X \text {-ray }}<\lambda_{\text {gamma-ray }}<\lambda_{\text {microwave }}$
  • $\lambda_{\text {gamma-ray }}<\lambda_{ X \text {-ray }}<\lambda_{\text {visible }}<\lambda_{\text {microwave }}$
  • C
    $\lambda_{\text {X-ray }}<\lambda_{\text {gamma-ray }}<\lambda_{\text {visisible }}<\lambda_{\text {microwave }}$
  • D
    $\lambda_{\text {microwave }}<\lambda_{\text {visible }}<\lambda_{\text {gamma-ray }}<\lambda_{\text {X-ray }}$

Answer

Correct option: B.
$\lambda_{\text {gamma-ray }}<\lambda_{ X \text {-ray }}<\lambda_{\text {visible }}<\lambda_{\text {microwave }}$
b
From electromagnetic wave spectrum.

$\lambda$ increases $\longrightarrow$

$\gamma$-ray $x$-rays ultra violet visible infrared microwave Radio wave

$\lambda_{\text {ganma-ray }}<\lambda_{ X \text {-ray }}<\lambda_{\text {visible }}<\lambda_{\text {microwave }}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Beta rays emitted by a radioactive material are:
A short bar magnet with its north pole facing north forms a neutral point at P in the horizontal plane. If the magnet is rotated by 90$^\circ$ in the horizontal plane, the net magnetic induction at P is (Horizontal component of earth’s magnetic field = $B_H$)
Effective resistance between $A$ and $B$ is ........... $\Omega$
Assertion : If a proton and an electron are placed in the same uniform electric field. They experience different acceleration.
Reason : Electric force on a test charge is independent of its mass.
A uniform electric field $\vec E$ exists between the plates of a charged condenser. A charged particle enters the space between the plates and perpendicular to $\vec E$ . The path of the particle between the plates is a
The temperature of cold junction and neutral temperature of a thermocouple are 15℃ and 280℃ respectively. The temperature of inversion is
A series $AC$ circuit containing an inductor $(20\,mH),$ a capacitor $(120\,\mu F)$ and a resistor $(60\, \Omega )$ is driven by an $AC$ source of $24\,V/50\,Hz.$ The energy dissipated in the circuit in $60\,s$ is
A long straight wire is carrying current $I_1$ in $+z$ direction. The $x-y$ plane contains a closed circular loop carrying current $I_2$ and not encircling the straight wire. The force on the loop will be:
A series $LCR$ circuit of $R=5\, \Omega, L=20\, {mH}$ and ${C}=0.5 \,\mu \,{F}$ is connected across an ${AC}$ supply of $250\, V$, having variable frequency. The power dissipated at resonance condition is $.....\,\times 10^{2}\, {W}$
A solenoid of length $10\ cm$, diameter $1\ cm,$ number of turns $500$ with relative permeability of the core $2000$, is connected to an ac source of frequency $50\ Hz$. Then, the reactance is.