Q154 / 160 · TS EAMCET 2021 (06 Aug Shift 1) · Physics

In the following List $A$ consists of wave length range of different of EM waves and List $B$ consists of ways to produce them. Match the following Lists. Figure

  • A
    3 2 1 4
  • B
    2 3 4 1
  • Correct answer
    C
    4 3 2 1
  • D
    1 4 3 2

Solution

(A) Waves of range $1 \mathrm{~nm}$ to $400 \mathrm{~nm}$ are produced when inner shell electrons in atoms moving from one energy level to a lower level. (B) The waves of range of wavelength greater the $0.1 \mathrm{~nm}$ is produced when rapid acceleration and deceleration of electrons in aerials takes place. (C) The waves of wavelength range $1 \mathrm{~nm}$ to $700 \mathrm{~nm}$ are produced by the vibration of atom and molecules in a substance. (D) The waves of range of wavelength of less than $10^{-3} \mathrm{~nm}$ are produced by the radioactive decay of the nucleus. The correct match is given by $\mathrm{A} \rightarrow 4, \mathrm{~B} \rightarrow 3, \mathrm{C} \rightarrow 2$ and $\mathrm{D} \rightarrow 1$

Hence, the correct answer is option: 'C'.

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