Question
Identify the following electromagnetic radiations as per the wavelengths given below.
Write one application of each.
  1. 1$0^{–3}nm$
  2. $10^{–3} m$
  3. $1 nm$

Answer

  1. $10^{-3 }nm:- X-$rays$/γ-$rays
Use: Medical/crystallography/transmutation.
  1. $10^{-3 }m:$ Microwave/short radio wave
Use: Oven/communication.
  1. $1nm: UV-$rays$/X-$rays
Use: Water purification/medical.

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

Suppose we have $12$ protons and $12$ neutrons. We can assemble them to form either $a :uMg$ nucleus or two $12C$ nuclei. In which of the two cases more energy will be liberated$?$
A spacecraft consumes more fuel in going from the earth to the moon than it takes for a return trip. Comment on this statement.
A rod is inserted as the core in the current-carrying solenoid of the previous problem.
  1. What is the magnetic intensity H at the centre?
  2. If the magnetization I of the core is found to be 0.12Nm, find the susceptibility of the material of the rod.
  3. Is the material paramagnetic, diamagnetic or ferromagnetic?
A plane electromagnetic wave travels in vacuum, along the Y-direction. Write down the:
  1. Ratio of the magnitudes,
  2. The direction, of its electric and magnetic field vectors.
Calculate the binding energy per $^{40}_{20}\text{CA}$ nucleon nucleus.
$[$Given: $m \big(^{40}_{20}\text{Ca}\big)=39.962589\text{u}]$
$m_n($mass od a neutron$) = 1.008665u$
$m_p($mass of a proton$) =1.007825u$
$1u = 931\ MeV/c^2]$
A long, straight wire of radius r carries a current i and is placed horizontally in a uniform magnetic field B pointing vertically upward. The current is uniformly distributed over its cross-section.
  1. At what points will the resultant magnetic field have maximum magnitude? What will be the maximum magnitude?
  2. What will be the minimum magnitude of the resultant magnetic field?
A person travels on a spaceship moving at a speed of $\frac{5\text{c}}{13}$
  1. Find the time interval calculated by him between the consecutive birthday celebrations of his friend on the earth.
  2. Find the time interval calculated by the friend on the earth between the consecutive birthday celebrations of the traveller.
A uniform conducting wire of length $12a$ and resistance $R$ is wound up as a current carrying coil in the shape of:
  1. An equilateral triangle of side $a.$
  2. A square of sides $a.$
  3. A regular hexagon of sides $a.$ The coil is connected to a voltage source $V_0.$ Find the magnetic moment of the coils in each case.
A given galvanometer is to be converted into (i) an ammeter (ii) a milliammeter (iii) a voltmeter. In which case will the required resistance be (i) least (ii) highest and why?
When light of appropriate frequency is shone on two metals X and Y , photo-electrons are emitted from them. The work function of metal X is more than work function of metal Y. For which metal the threshold frequency will be greater and why?