Electromagnetic Spectrum

Identify the following electromagnetic radiation as per the wavelengths given below.

(a)  ${10}^{-3} \mathrm{m}$

(b) $1 \mathrm{nm}$

The wavelength,  $K_{\alpha }$ of X-rays produced by an X-ray tube is $0.76 \mathrm{\AA }$. The atomic number of the anode material of the tube is___________

The wavelength,  $K_{\alpha }$ of X-rays produced by an X-ray tube is 0.76 Å. The atomic number of the anode material of the tube is___________

In an X-ray tube, electrons accelerated through a potential difference of $15,000$ volts strike a copper target. The speed of the emitted X-rays inside the tube is $\mathrm{m}{ \mathrm{s}}^{-1}$

Which of the following radiations has the least wavelength ?

Which colour of the light has the longest wavelength?

The wavelength of Ultraviolet rays is between $300 \mathrm{pm}$ and _____.

The wavelength of Microwaves is between $0.3 \mathrm{mm}$ and _____ $\mathrm{cm}$.

The wavelength of Microwaves is between $0.3 \mathrm{mm}$ and _____.

The wavelength of visible light is between _____ $\mathrm{nm}$ and $800 \mathrm{nm}$.

Source of illumination for image formation in dark field microscope is:

Which of the following electromagnetic radiation is used for viewing objects through the fog.

A passenger in an aeroplane will

An electromagnetic wave has a frequency of $500 \mathrm{MHz}$ and a wavelength of $60 \mathrm{cm}$. Calculate velocity (in $\mathrm{m}/\mathrm{s}$ )

(Just mention the numerical value, which is a multiple of ${10}^8$)

A wave has a wavelength of $0.01 Å$. Calculate its frequency (in terms of $\mathrm{Hz}$). (Given speed of light is: $3\times {10}^8 \mathrm{m}/\mathrm{s}$)

(Just mention the numerical value, which is a multiple of ${10}^{20}$)

How many oxygen atoms are there in every molecule of ozone?

Which one of the following cause ozone layer depletion?

For LED's to emit light in visible region of electromagnetic radiation, it should have energy band gap in the range of

Frequency range for microwaves is :