Solution:
For maximum power to be delivered from the generator (or internal reactance Xg) to the load (of reactance, XL),
⇒ XL + Xg = 0 (the total reactance must vanish)
⇒ XL= -Xg.
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In Young's double slit experiment, if one of the slit is closed fully, then in the interference pattern
|
(a) A bright slit will be observed, no interference pattern will exist |
|
(b) The bright fringes will become more bright |
|
(c) The bright fringes will become fainter |
|
(d) None of the above |
The momentum of a photon is 2 
gm-cm/sec. Its energy is
|
(a) 0.61 |
(b) 2.0 |
(c) 6 |
(d) 6 |
In a concave mirror experiment, an object is placed at a distance 
from the focus and the image is formed at a distance 
from the focus. The focal length of the mirror would be
|
(a) |
(b) |
(c) |
(d) |
Avalanche breakdown is due to
|
(a) Collision of minority charge carrier |
(b) Increase in depletion layer thickness |
|
(c) Decrease in depletion layer thickness |
(d) None of these |
In the case of bar magnet, lines of magnetic induction
|
(a) Start from the north pole and end at the south pole |
|
(b) Run continuously through the bar and outside |
|
(c) Emerge in circular paths from the middle of the bar |
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(d) Are produced only at the north pole like rays of light from a bulb |
The unit for molar susceptibility is
|
(a) m3 |
(b) kg-m–3 |
(c) kg–1 m3 |
(d) No units |
