- A$I _0$
- B$2 I _0$
- ✓$4 I _0$
- D$0$
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A proton of mass 1.67 and charge 1.6
is projected with a speed of 2
m/s at an angle of 60° to the X - axis. If a uniform magnetic field of 0.104 Tesla is applied along Y - axis, the path of proton is
|
(a) A circle of radius = 0.2 m and time period |
|
(b) A circle of radius = 0.1 m and time period 2 |
|
(c) A helix of radius = 0.1 m and time period 2 |
|
(d) A helix of radius = 0.2 m and time period 4 |
Laser beams are used to measure long distances because
|
(a) They are monochromatic |
(b) They are highly polarised |
|
(c) They are coherent |
(d) They have high degree of parallelism |
The resistance between the terminal points A and B of the given infinitely long circuit will be

|
(a) ( |
(b) (1 - |
(c) (1 + |
(d) (2 + |
Atomic weight of boron is 10.81 and it has two isotopes
and
. Then ratio of
in nature would be
|
(a) 19 : 81 |
(b) 10 : 11 |
(c) 15 : 16 |
(d) 81 : 19 |
$\lambda'>\lambda$
$\lambda'=\lambda$
$\lambda'<\lambda$
If in a voltaic cell 5 gm of zinc is consumed, then we get how many ampere hours ? (Given that E.C.E. of Zn is 3.387 kg/coulomb)
|
(a) 2.05 |
(b) 8.2 |
(c) 4.1 |
(d) |