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Atoms and Nuclei question

2024 · Q193
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Atoms and Nuclei question

2024 · Q193

NEETPhysicsAtoms and NucleiMCQ+4 / −1

Select the correct statements among the following :

A. Slow neutrons can cause fission in 92235U{ }_{92}^{235} \mathrm{U}92235​U than fast neutrons.

B. α\alphaα-rays are Helium nuclei.

C. β\betaβ-rays are fast moving electrons or positrons.

D. γ\gammaγ-rays are electromagnetic radiations of wavelengths larger than X\mathrm{X}X-rays.

Choose the most appropriate answer from the options given below :

  1. A
    A, B and C only
  2. B
    A, B and D only
  3. C
    A and B only
  4. D
    C and D only
View written solutionFree

Correct answer: A

(A) Slow neutron can cause fission in $${ }_{92}^{235} \mathrm{U}$$ than fast neutrons because fast neutrons are too quick so they scatter of atoms instead of being captured by them

(B) $\alpha$-rays are Helium nuclei, is a true statement

(C) $\beta$-rays are generated when neutron is converted into proton by releasing electron or proton is converted into neutron by releasing positron.

(D) $\gamma$-rays have higher energies as compared to X-rays. So they have smaller wavelength as compared to X-rays.

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