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CBSE - XII Science - Physics - Communication Systems
WHAT IS DIFFRENCE BETWEEN SONAR ANA sound detecting radar?
Asked by Shahwar
15th June 2015,
9:20 PM
CBSE - XII Science - Physics - Communication Systems
what is the need for modulation?
what are sky waves , space waves and ground waves?
Asked by gsonu953
3rd March 2015,
10:32 AM
CBSE - XII Science - Physics - Communication Systems
With the help of block diagram describe how an amplitude modulated signal is detected by a radio receiver. Show graphically the detected wave and the msg signal retrieved.
Asked by Aksa Merin Saji
19th February 2015,
6:21 PM
CBSE - XII Science - Physics - Communication Systems
explain detection of am waves
Asked by Indra
25th December 2014,
8:39 PM
CBSE - XII Science - Physics - Communication Systems
A cell of emf (ξ) and internal resistance (r) is connected across a variable external resistance (R). Plot graph to show variation of (i) ξ with R (ii) Terminal p.d of the cell with Resistance(R).
Asked by inderjeet.saluja
23rd August 2014,
2:02 PM
CBSE - XII Science - Physics - Communication Systems
From a tower of height H, a particle is thrown vertically upwards with a speed u. The
time taken by the particle, to hit the ground, is n times that taken by it to reach the
highest point of its path. The relation between H, u and n is:
Answer:-2gH=n(n-2)(u*u)
why?
Asked by Sameer Raj
17th April 2014,
10:27 AM
CBSE - XII Science - Physics - Communication Systems
 1)  2)  3)  4)  |
Asked by NIKHIL
14th April 2014,
4:43 PM
CBSE - XII Science - Physics - Communication Systems
sir i have only 5 days to prepare how should i approach these 5 days to prepare for jee.
how should i do for chemistry physics and maths . please reply urgenty...,,,,,
Asked by sudeep mohanty
29th March 2014,
8:03 PM
CBSE - XII Science - Physics - Communication Systems
the transmission of signals using ground waves are restricted upto a frequency of about 1500kHz. Why?
Asked by sai saranya s
3rd March 2014,
7:33 PM
