- AZero
- BInfinite
- C10-10 m
- D1010 m
Explanation:
The perpendicular distance between the path of a projectile and the center of the potential field is the impact parameter.
Therefore, for a head-on collision of the α-particle with a nucleus, the impact parameter is equal to zero.
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Two electric bulbs (60W and 100W respectively) are connected in series. The current passing through them is
|
(a) More in 100W bulb |
(b) More in 60W bulb |
(c) Same in both |
(d) None of these |
A 5.0 amp current is setup in an external circuit by a 6.0 volt storage battery for 6.0 minutes. The chemical energy of the battery is reduced by
|
(a) 1.08 × 104 J |
(b) 1.08 × 10-4 volt |
(c) 1.8 × 104 J |
(d) 1.8 × 104 volt |
If a magnetic substance is kept in a magnetic field, then which of the following is thrown out
|
(a) Paramagnetic |
(b) Ferromagnetic |
(c) Diamagnetic |
(d) Antiferromagnetic |
A coil is wound as a transformer of rectangular cross-section. If all the linear dimensions of the transformer are increased by a factor 2 and the number of turns per unit length of the coil remain the same, the self inductance increased by a factor of
|
(a) 16 |
(b) 12 |
(c) 8 |
(d) 4 |
In a step up transformer, 220 V is converted into 200 V. The number of turns in primary coil is 600. What is the number of turns in the secondary coil
|
(a) 60 |
(b) 600 |
(c) 6000 |
(d) 100 |
What is the de-Broglie wavelength of the α - particle accelerated through a potential difference V
|
(a) |
(b) |
(c) |
(d) |