Identify the wrong statement in the following. Coulomb's law correctly describes the electric force that
|
(a) Binds the electrons of an atom to its nucleus |
|
(b) Binds the protons and neutrons in the nucleus of an atom |
|
(c) Binds atoms together to form molecules |
|
(d) Binds atoms and molecules together to form solids |
(b) Binds the protons and neutrons in the nucleus of an atom
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If all the resistors shown have the value 2 ohm each, the equivalent resistance over AB is
|
(a) 2 ohm |
(b) 4 ohm |
(c) 1 |
(d) 2 |
A light wave is incident normally over a slit of width 24 
. The angular position of second dark fringe from the central maxima is 30o. What is the wavelength of light
|
(a) 6000 Å |
(b) 5000 Å |
(c) 3000 Å |
(d) 1500 Å |
The potential difference between the cathode and the target in a Collidge tube is 100 kV. The minimum wavelength of the X-rays emitted by the tube is
|
(a) 0.66 Å |
(b) 9.38 Å |
(c) 0.246 Å |
(d) 0.123 Å |
The total current supplied to the circuit by the battery is
|
(a) 1 A |
(b) 2 A |
(c) 4 A |
(d) 6 A |
As shown in the figure, a magnet is moved with a fast speed towards a coil at rest. Due to this induced electromotive force, induced current and induced charge in the coil is E, I and Q respectively. If the speed of the magnet is doubled, the incorrect statement is
|
(a) E increases |
(b) I increases |
(c) Q remains same |
(d) Q increases |
A nucleus of 
originally at rest emits a particle with speed v. What will be the recoil speed of the daughter nucleus
| (a) 4v/206 | (b) 4v/214 | (c) v/206 | (d) v/214 |
A parallel plate capacitor of plate separation 2 mm is connected in an electric circuit having source voltage 400 V. if the plate area is 60 cm2, then the value of displacement current for 
will be
|
(a) 1.062 amp |
(b) 1.062 |
(c) 1.062 |
(d) 1.062 |
