In which frequency range, space waves are normally propagated
|
(a) HF |
(b) VHF |
(c) UHF |
(d) SHF |
In which frequency range, space waves are normally propagated
|
(a) HF |
(b) VHF |
(c) UHF |
(d) SHF |
(c) UHF
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Find the power of the circuit

|
(a) 1.5 W |
(b) 2 W |
(c) 1 W |
(d) None of these |
A beam of fast moving alpha particles were directed towards a thin film of gold. The parts
and
of the transmitted and reflected beams corresponding to the incident parts A, B and C of the beam, are shown in the adjoining diagram. The number of alpha particles in

|
(a) |
(b) |
|
(c) |
(d) |

GaAs is
|
(a) Element semiconductor |
(b) Alloy semiconductor |
|
(c) Bad conductor |
(d) Metallic semiconductor |
A battery of internal resistance 4W is connected to the network of resistances as shown. In order to give the maximum power to the network, the value of R (in Ω) should be
|
(a) 4/9 |
(b) 8/9 |
(c) 2 |
(d) 18 |