ReNEET 2026 · Physics · Q43Electromagnetic WavesIn our bank: Strong match · 85%

The table lists parts of the electromagnetic spectrum and their major applications. Match List-I (P Microwave, Q UV rays, R Gamma rays, S Radio wave) with List-II (I For purifying the water, II For warming the food, III For AM and FM communication systems, IV For treating the cancer cells). The correct option is:

  1. A.P-I, Q-II, R-III, S-IV
  2. B.P-I, Q-IV, R-II, S-III
  3. C.P-II, Q-I, R-IV, S-III
  4. D.P-II, Q-IV, R-III, S-I

Correct Answer

(C) P-II, Q-I, R-IV, S-III

Solution & Explanation

Match each EM band to its standard application by its physical effect. P — Microwave: microwaves are strongly absorbed by water molecules, heating them, so they are used for warming/cooking food → P-II. Q — UV rays: UV radiation is germicidal (it destroys bacteria and microbes), so it is used for purifying/sterilising water → Q-I. R — Gamma rays: high-energy gamma photons kill malignant cells, so they are used in radiotherapy for treating cancer cells → R-IV. S — Radio waves: radio waves are the carriers of AM and FM broadcast signals → S-III. Therefore the correct matching is P-II, Q-I, R-IV, S-III, which is option C.

✅ We had this exact concept in our bank before the exam — Strong match, 85% match.

That's the Predicted Batch — it trains you on the exact high-probability concepts NEET repeats every year. 98% of the 2026 paper (176/180) was in our bank before the exam.

Master these concepts + 50,000+ NEET PYQs in the app — free, built for NEET 2027.

Start the Predicted Batch — Free →
📚From Electromagnetic Waves practice all 22 NEET Physics PYQs from this chapter

More ReNEET 2026 solutions

Phys Q38An electromagnetic wave travelling in a lossless dielectric medium of dielectric constant ε_r=9 has electric field E_x=E₀(kz-2π×10⁶t) Vm⁻¹, where E₀ is the amplitude and k the wave vector. Among the following, the INCORRECT choice is:Phys Q1A particle of mass M moves along a horizontal x-axis from x=0 to x=L. The coefficient of kinetic friction varies as µ_k(x)=µ₀-α x, where µ₀,α are constants of appropriate dimensions, so that µ_k(L)=0. The total work done by the frictional force during the motion is nµ₀ MgL. The value of n is:Phys Q2The mean free path of molecules in an ideal gas A is half that of another ideal gas B. The diameter of the spherical molecules of gas A is twice the diameter of the molecules of B. If the number densities of gases A and B are n_A and n_B respectively, the correct option is:Phys Q3Two identical inductors are connected in two different configurations P (series) and Q (parallel), where a time-varying current I(t) flows, as shown. The induced emf between points a and b for configuration P is E_P and for Q is E_Q. The ratio E_P/E_Q is: [Neglect mutual inductance.]Phys Q4For sound waves, if the number of nodes for the 5^th harmonic of an open-ended pipe is n and that for the 9^th harmonic of the same pipe with one of its ends closed is m, the ratio (n)/(m) is:Phys Q5Consider a long solenoid of length l and radius r. If n is the number of turns per unit length and µ₀ the permeability of free space, the inductance of the solenoid is:Phys Q6A particle moves along a straight line with position s(t)=α t²-β t+γ, where α=1 ms⁻², β=6 ms⁻¹, γ=5 m. The average speed of the particle (in ms⁻¹) from t=0 to t=6 s is:Phys Q7Consider the nuclear reaction ²³⁸U→²³⁴Th+⁴He. Taking the masses of ²³⁸U, ²³⁴Th and ⁴He as 238.050 u, 234.043 u and 4.003 u respectively, the Q-value of the reaction (in keV) is: [1 u =931.5 MeV c⁻²]Phys Q8A beam of light falls on a metal surface such that photo-electrons are generated. If the power of the light source starts to decrease linearly with time t, then the variation of the photocurrent I and the magnitude of the stopping potential |V| with time is best represented by: