Question

Q7. The marks obtained (out of 10) by 80 students in a class test are
given below:
Marks
1
1
2
3.
4
5
6
7
8
9
1
Obtaine
0
d
Numbe
r of
3.
5
8
1
9
1
2
1
1
2
student
0
5
0
6
2
S​

Answer 1

Answer:

A proton, a deutron and an α- particle having the same kinetic energy are moving in circular trajectories in

a constant magnetic field. If rp, rd and rα denote respectively the radii of the trajectories of these particles,

then

(a) rα ˃ rd ˃ rp (b) rα= rp˂ rd `` (c) rα= rd ˃ rd (d) rα= rd = rd