Select the correct statements among the following :
A. Slow neutrons can cause fission in 
than fast neutrons.
B. 
-rays are Helium nuclei.
C. 
-rays are fast moving electrons or positrons.
D. 
-rays are electromagnetic radiations of wavelengths larger than X -rays.
Choose the most appropriate answer from the options given below :
Text Solution
Verified by ExpertsSlow neutron can cause fission in 
than fast neutrons because fast neutrons are too quick so they scatter of atoms instead of being captured by them
-rays are Helium nuclei, is a true statement
-rays are generated when neutron is converted into proton by releasing electron or proton is converted into neutron by releasing positron.
-rays have higher energies as compared to X -rays. So they have smaller wavelength as compared to X-rays.
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