Last Updated On [03-11-2023]
A message signal of frequency 100MHz and peak voltage 100v is used to execute amplitude modulation on a carrier wave of frequency 300 GHz and peak voltage 400 v. The modulation index and difference between the two side band frequencies are :
(a)
4 ; 2 × 108Hz
(b)
4 ; 1 × 108Hz
(c)
0.25 ; 1 × 108Hz
(d)
0.25 ; 2 × 108Hz
A message signal of frequency 100MHz and peak voltage 100v is used to execute amplitude modulation on a carrier wave of frequency 300 GHz and peak voltage 400 v. The modulation index and difference between the two side band frequencies are :
(a)
4 ; 2 × 108Hz
(b)
4 ; 1 × 108Hz
(c)
0.25 ; 1 × 108Hz
(d)
0.25 ; 2 × 108Hz
Question ID - 51334 :-
A message signal of frequency 100MHz and peak voltage 100v is used to execute amplitude modulation on a carrier wave of frequency 300 GHz and peak voltage 400 v. The modulation index and difference between the two side band frequencies are :
(a)
4 ; 2 × 108Hz
(b)
4 ; 1 × 108Hz
(c)
0.25 ; 1 × 108Hz
(d)
0.25 ; 2 × 108Hz
|
A message signal of frequency 100MHz and peak voltage 100v is used to execute amplitude modulation on a carrier wave of frequency 300 GHz and peak voltage 400 v. The modulation index and difference between the two side band frequencies are : |
|||
|
(a) |
4 ; 2 × 108Hz |
(b) |
4 ; 1 × 108Hz |
|
(c) |
0.25 ; 1 × 108Hz |
(d) |
0.25 ; 2 × 108Hz |
Range of frequency = (fc − fm) to (fc + fm)
Band width = 
= 2 × 100 ×106 Hz
= 2 × 108Hz
And modulation index =
= 
Next Question :
Two particles, of masses M and 2M, moving, as shown, with speeds of 10m/s and 5m/s, collide elastically at the origin, After the collision, they move along the indicated directions with speeds v1 and v2, respectively. The values of v1 and v2 are nearly:
|
(a) |
3.2m/s and 12.6m/s |
(b) |
3.2m/s and 6.3m/s |
|
(c) |
6.5m/s and 3.2 m/s |
(d) |
6.5m/s and 6.3m/s |
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