Electromagnetic Spectrum

Identify the following electromagnetic radiations as per the wavelength given below.

(a) 10 −12 m

(b) 10 −8 m

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?

The air of the earth's atmosphere responsible for absorbing a large portion of ultraviolet radiations by the sun is