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Question

Which of the following does not fall under the category of ionizing radiations?

The correct answer is
Microwave

Distinguishing Ionizing Radiations: Microwave Analysis

Ionizing radiation refers to radiation with enough energy to remove electrons from atoms or molecules, creating ions. This typically involves high-frequency or high-energy forms of radiation.

Evaluating the options:

  • Ultraviolet (UV) Radiation: Some high-frequency UV rays can ionize, but lower-frequency UV is generally considered non-ionizing, although it can cause cellular damage. It's often considered borderline.
  • X-rays: These are high-energy electromagnetic waves capable of ionization.
  • Microwave: Microwaves have lower frequencies and longer wavelengths. They mainly cause heating by vibrating molecules and are non-ionizing.
  • Gamma rays: These are high-energy photons from nuclear processes and are strongly ionizing.

Reasoning:

Microwaves lack the high energy needed to ionize atoms, unlike X-rays and gamma rays. While UV can be borderline, microwaves are definitively in the non-ionizing category among the choices provided.

Therefore, microwaves do not fall under the category of ionizing radiations.

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Important Questions from Nuclear Physics

  1. Spin \(\frac{1}{2}\)  fermions of mass m and 4m are in a harmonic potential V(x) =  \(\frac{1}{2}\) kx 2 . Which configuration of 4 such particles has the lowest value of the ground state energy?
  2. Charged pions π decay to muons μ and anti-muon neutrinos v̅ μ ∶ π → μ + v̅ μ . Take the rest masses of a muon and a pion to be 105 MeV and 140 MeV, respectively. The probability that the measurement of the muon spin along the direction of its momentum is positive, is closest to
  3. The outermost shell of an atom of an element is 3d3. The spectral symbol for the ground state is

  4. An atom with proton number 84 and nucleon number 216 decays into a new element. In this process, it emits an alpha particle. What is the structure of the new nucleus after the emission?

  5. Discoverer of Radioactivity is

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