Nuclear Physics - TRB Physics Study Materials

SI NO.	QUESTIONS	ANSWERS
1.	The clock in moving rocket will?	Go slower
2.	Ratio activity was discovered by?	Galileo
3.	The elements which exhibits the natural radioactivity property they are called?	Radioactive elements
4.	The mass of particle was found to be?	Four times that of hydrogen
5.	The distance through which an particle travels in a substance before coming to rest is called?	Range of the particle
6.	Which element should under go     -decay?	Only heavy nuclei with A > 200
7.	In the case of radioactive elements the height of the potential barrier is about?	9Mev
8.	For the treatment of thyroid gland the radioisotope used is?	Iodine 131
9.	The first nuclear reactor was built in?	Cicago
10.	Pions are related to?	Nuclear interactions
11.	If the distance between two charges is doubled then the force between them is?	Quadrupled
12.	Example of cyclic accelerator are?	Linear accelerator, cyclotron and betatron
13.	In GM counter the applied potential is increased the counting begins and rises rapidly to a flat portion of the curve called?	Plateau
14.	One of the earliest methods of radiationdetection was?	Spinthariscope
15.	The multiplier stages inside the scintillation counter is?	10-14
16.	A particle accelerator is a device which is used for?	Increasing the K.E. of charged particle
17.	The final energy of the ion in the linear accelerator is depends upon?	Total number of gaps and energy gained in each gap
18.	The particles are ejected out of the cyclotron is?	Not continuously but as pulsed streams
19.	The ions travel in a circular path of the cyclotron with radius ‘r’ given by?	Mv/be
20	Synchrocyclotron is  a modified form of the?	Lawrence cyclotron
21	In electron synchrotron electrons are injected into an orbit of fixed radius at an initial energy of about?	50-80 Kev
22	Atoms are different elements having the same number of neutrons is called?	Isotones
23	The high value of the nuclear density shows that the nuclear matter is in an extremely?	Compressed state
24	93.1 Mev is equal to?	1 amu
25	Binding energy per nucleon for uranium is?	7.6 Mev