COMEDK2024Evening ShiftPhysicsElectromagnetic WavesActual
Column - I lists the waves of the electromagnetic spectrum. Column - II gives approximate frequency range of these waves. Match Column - I and Column - II and choose the correct match from the given choices. No. Column I No. Column II A Radiowaves P 10¹⁸ to 10²⁰ Hz B Microwaves Q 10¹¹ to 5 10¹⁴ Hz C Infrared R 10⁴ to 10⁸ Hz D X-rays S 10⁹ to 10¹² Hz
Options
- A(A)-(R) (B)-(P) (C)-(S) (D)-(Q)
- B(A)-(R) (B)-(S) (C)-(P) (D)-(Q)
- C(A)-(R) (B)-(S) (C)-(Q) (D)-(P)
- D(A)-(R) (B)-(Q) (C)-(S) (D)-(P)
Correct answer
C. (A)-(R) (B)-(S) (C)-(Q) (D)-(P)
Step-by-step solution
The electromagnetic spectrum is categorized by frequency ranges as follows: Radiowaves have a frequency range typically from 10^4 Hz to 10^8 Hz . This matches (A) with (R). Microwaves have a frequency range typically from 10^9 Hz to 10¹² Hz . This matches (B) with (S). Infrared radiation has a frequency range from approximately 10¹¹ Hz to 5 10¹⁴ Hz . This matches (C) with (Q). X-rays have a frequency range typically from 10¹⁸ Hz to 10²⁰ Hz . This matches (D) with (P). Therefore, the correct matching is (A)-(R), (B)