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On passing 96500 coulomb of charge through a solution 
the amount of copper liberated is
|
(a) 64 gm |
(b) 32 gm |
(c) 32 kg |
(d) 64 kg |
Finger prints are observed by the use of:
The frequency of 1st line of Balmer series in 
atom is 
. The frequency of line emitted by singly ionised He atom is
|
(a) 2 |
(b) 4 |
(c) |
(d) |
A vertical straight conductor carries a current vertically upwards. A point P lies to the east of it at a small distance and another point Q lies to the west at the same distance. The magnetic field at P is
| (a) Greater than at Q |
| (b) Same as at Q |
| (c) Less than at Q |
| (d) Greater or less than at Q depending upon the strength of the current |
The acceleration of an electron in an electric field of magnitude 50 V/cm, if e/m value of the electron is 1.76 
is
|
(a) 8.8 |
(b) 6.2 |
(c) 5.4 |
(d) Zero |
In the following diagram the work done in moving a point charge from point P to point A, B and C is respectively as WA, WB and WC , then
|
(a) WA = WB = WC |
(b) WA = WB = WC = 0 |
(c) WA > WB > WC |
(d) WA < WB < WC |
The de-Broglie wavelength of an electron in the first Bohr orbit is
|
(a) Equal to one fourth the circumference of the first orbit |
|
(b) Equal to half the circumference of the first orbit |
|
(c) Equal to twice the circumference of the first orbit |
|
(d) Equal to the circumference of the first orbit |
