Ozone is found in
|
(a) Stratosphere |
(b) Ionosphere |
(c) Mesosphere |
(d) Troposphere |
Ozone is found in
|
(a) Stratosphere |
(b) Ionosphere |
(c) Mesosphere |
(d) Troposphere |
(a) Stratosphere
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Two long conductors, separated by a distance d carry current I1 and I2 in the same direction. They exert a force F on each other. Now the current in one of them is increased to two times and its directions is reversed. The distance is also increased to 3d. The new value of the force between them is
|
(a) –2F |
(b) F/3 |
(c) 2F/3 |
(d) – F/3 |
Who discovered spin quantum number
|
(a) Unlenbeck and Goudsmit |
(b) Nell’s Bohr |
|
(c) Zeeman |
(d) Sommerfield |
Gauss is unit of which quantity
|
(a) H |
(b) B |
(c) ∅ |
(d) I |
An electron moving with a speed u along the positive x-axis at y = 0 enters a region of uniform magnetic field
which exists to the right of y-axis. The electron exits from the region after some time with the speed v at co-ordinate y, then

|
(a) v > u, y < 0 |
(b) v = u, y > 0 |
(c) v > u, y > 0 |
(d) v = u, y < 0 |