Question 491: Atoms & Nuclei

Question

Select the correct statements among the following :
A. Slow neutrons can cause fission in $${ }_{92}^{235} \mathrm{U}$$ than fast neutrons.
B. $$\alpha$$-rays are Helium nuclei.
C. $$\beta$$-rays are fast moving electrons or positrons.
D. $$\gamma$$-rays are electromagnetic radiations of wavelengths larger than $$\mathrm{X}$$-rays.
Choose the most appropriate answer from the options given below :

Accepted Answer

(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.

Answer

A, B and C only

Answer

A, B and D only

Answer

A and B only

Answer

C and D only

Atoms & Nuclei

Choose the correct answer: