Question
Identify the following electromagnetic radiations as per the wavelengths given below.
Write one application of each.
  1. 10–3 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

A lens forms a real image of an object. The distance from the object to the lens is u cm and the distance of the image from the lens is v cm. The given graphs shows variation of v with u.
  1. What is the nature of the lens?
  2. Using the graph, find the focal length of this lens.
A beam of light converges at a point P. Now a lens is placed in the path of the convergent beam 12cm from P. At what point does the beam converge if the lens is (a) a convex lens of focal length 20cm, and (b) a concave lens of focal length 16cm?
Two charged particles, having equal charges of 2.0 × 10-5C each, are brought from infinity to within a separation of 10cm. Find the increase in the electric potential energy during the process.
A spring stores 5J of energy when stretched by 25cm. It is kept vertical with the lower end fixed. A block fastened to its other end is made to undergo small oscillations. If the block makes 5 oscillations each second, what is the mass of the block?
State the principle of a cyclotron. Show that the time period of revolution of particles in a cyclotron is independent of their speeds. Why is this property necessary for the operation of a cyclotron?
  1. Draw a schematic diagram of a reflecting telescope.
  2. State the advantages of reflecting telescope over refracting telescope.
  1. Write symbolically the β decay process of$\frac{15}{32}$P.
  2. Derive an expression for the average life of a radionuclide. Give its relationship with the half-life.
A flint glass prism and a crown glass prism are to be combined in such a way that the deviation of the mean ray is zero. The refractive index of flint and crown glasses for the mean ray are 1.620 and 1.518 respectively. If the refracting angle of the flint prism is 6.0°, what would be the refracting angle of the crown prism?
  1. For a given a.c.,$\text{i} = \text{i}_{m}\sin\omega\text{t},$ show that the average power dissipated in a resistor R over a complete cycle is $\frac{1}{2}\text{i}_{m}^{2}\text{R}.$
  2. A light bulb is rated at 100 W for a 220 V a.c. supply. Calculate the resistance of the bulb.
  1. Six lead-acid type of secondary cells each of emf 2.0 V and internal resistance $0.015\Omega$ are joined in series to provide a supply to a resistance of $8.5\ \Omega.$ What are the current drawn from the supply and its terminal voltage?
  2. A secondary cell after long use has an emf of 1.9 V and a large internal resistance of $380\ \Omega$ What maximum current can be drawn from the cell? Could the cell drive the starting motor of a car?