In an electrolyte 3.2 
bivalent positive ions drift to the right per second while 3.6 monovalent negative ions drift to the left per second. Then the current is
|
(a) 1.6 amp to the left |
(b) 1.6 amp to the right |
(c) 0.45 amp to the right |
(d) 0.45 amp to the left |
(b) 1.6 amp to the right
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
A transformer is employed to
|
(a) Obtain a suitable dc voltage |
(b) Convert dc into ac |
|
(c) Obtain a suitable ac voltage |
(d) Convert ac into dc |
If there had been one eye of the man, then
|
(a) Image of the object would have been inverted |
(b) Visible region would have decreased |
|
(c) Image would have not been seen three dimensional |
(d) (b) and (c) both |
Work of moderator is
|
(a) To control the velocity of neutrons |
(b) Cooling |
|
(c) As fuel |
(d) It is used for safety |
Two resistances are joined in parallel whose resultant is 
ohm. One of the resistance wire is broken and the effective resistance becomes 2Ω. Then the resistance in ohm of the wire that got broken was
|
(a) 3/5 |
(b) 2 |
(c) 6/5 |
(d) 3 |
X-rays are produced due to
| (a) Break up of molecules | (b) Changing in atomic energy level |
| (c) Changing in nuclear energy level | (d) Radioactive disintegration |
A charged particle is moving in a uniform magnetic field in a circular path. Radius of circular path is R. When energy of particle is doubled, then new radius will be
|
(a) R |
(b) |
(c) 2 R |
(d) 3 R |
An achromatic combination of lenses produce:
