Thermonuclear fusion?is a way to achieve?nuclear fusion?by using extremely high temperatures. There are two forms of thermonuclear fusion:?uncontrolled, in which the resulting energy is released in an uncontrolled manner, as it is in?thermonuclear weapons?such as the hydrogen bomb, and?controlled, where the fusion reactions take place in an environment allowing some of the resulting energy to be harnessed for constructive purposes. This article focuses on the latter.
112) Choose the WRONG statement. A thermonuclear fusion reactor is better than a fission reactor for the following reason:
Answer is:
The fuel required for fusion is readily available in abundance from seawater.
Explanation:
Related Atoms and Nuclei MCQ with Answers
Answer is:
Nuclear fusion of lighter elements in the sun
Explanation:
Nuclear fusion of lighter elements in the sun is the main source of energy of the sun?
Answer is:
0.51 MeV
Explanation:
It is also possible for a photon to give up its quantum?energy?to the formation of a particle-antiparticle pair in its interaction with matter. The?rest mass energy?of an electron is 0.511 MeV, so the threshold for electron-positron pair production is 1.02 MeV.
Answer is:
the number of electrons orbiting around its nucleus
Explanation:
The chemical behavior of an atom depends upon the number of electrons orbiting around its nucleus
Answer is:
30 min
Explanation:
As the amount of radioactive isotope remaining after 2 hrs is 1/16 of the intial amount,the eauation N=(N)initial x (exp(-kt)), here k denote lambda, takes the form N)initial/16=N)initial x (exp(-kt)) i.e., exp(-kt)=1/16 => -kt= log(1/16) .....[taking log on both the sides] =>-kt=-4log2 now time taken is 2 hrs therfore, 2k=4log2 => k=2log2 now half life =log2/k=1/2hrs=30 mins ,hence the answer (ii) THIS WAS FOR NCERT TRADITIONAL WORMS NEXT SOLUTION IS A BETTER APPROACH the amount left after n-half lives=initial amount/(2 raised to power n),now as the final amount 1/16 ,i.e., 1/(2 raised to power 4) of the initial amount, 4 half lives have passed therefore, 4(half life)=2 hrs => half life=30 min