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Three bulbs of 40 W, 60 W, 100 W are arranged in series with 220 volt supply which bulb has minimum resistance
|
(a) 100 W |
(b) 40 W |
(c) 60 W |
(d) Equal in all bulbs |
A charge of 5 C is given a displacement of 0.5 m. The work done in the process is 10 J. The potential difference between the two points will be
|
(a) 2 V |
(b) 0.25 V |
(c) 1V |
(d) 25 V |
An electron enters between two horizontal plates separated by 2mm and having a potential difference of 1000V. The force on electron is
|
(a) 8 |
(b) 8 |
(c) 8 |
(d) 8 |
If a magnet is suspended at an angle 30o to the magnetic meridian, it makes an angle of 45o with the horizontal. The real dip is
(a) 
|
(b) 
|
(c) 
|
(d) 
|
An iron rod of volume 
and relative permeability 1000 is placed inside a long solenoid wound with 5 turns/cm. If a current of 0.5 A is passed through the solenoid, then the magnetic moment of the rod is
|
(a) 10 |
(b) 15 |
(c) 20 |
(d) 25 |
The speed of light in air is 3 
. What will be its speed in diamond whose refractive index is 2.4
|
(a) 3 |
(b) 332 m/s |
(c) 1.25 |
(d) 7.2 |
