Home
Class 11
PHYSICS
find the minimum colatitude which can di...

find the minimum colatitude which can directly receive a signal from a geostationary satellite.

Text Solution

Verified by Experts

The correct Answer is:
A
The collattitude is given by `theta`
`ltOAB=90^@ltABO`
Again `ltOBC theta ltOAB` ltBrgt `:. Sintheta=6400/42000`
`=16/106=8/53`
`:. phi=sin^-18/53`
=sin^-10.15`
Promotional Banner

Similar Questions

Explore conceptually related problems

What fraction of the surface area of Earth can be covered to establish communication by one geostationary satellite ?

A car of mass m has an engine which can deliver power P. The minimum time in which car can be accelerated from rest to a speed v is :-

Draw a labeled diagram of a cell which can detect, receive and transmit different kinds of stimuli.

A satellite is to be placed in equatorial geostationary orbit around the earth for communication. (a) Calculate height of such a satellite. (b) Find out the minimum number of satellites that are needed to cover entire earth, so that atleast one satellite is visible from any point on the equator. [M = 6 xx 10^(24) kg, R = 6400 km, T = 24 h, G = 667 x 10-^(11) SI unit]

Two radio stations broadcast their programmes at the same amplitude A and at slightly different frequencies omega_(1) and omega_(2) respectively, where omega_(1) - omega_(2) = 10^(3) Hz . A detector receives the signals from the two stations simultaneously, it can only detect signals of intensity ge 2A^(2) . (i) Find the time interval between successive maxima of the intensity of the signal received by the detector. (ii) Find the time for which the detector remains idle in each cycle of the intensity of the signal.

Find the minimum resistance that can be made using five resistors, each of 5 Omega .

The diagram shows a plant which has received light from one side only. Which characteristics are shown by the plant ?

To find the distance d over which a signal can be seen clearly in foggy conditions, a railways engineer uses dimensional analysis and assumes that the distance depends on the mass density rho of the fog, intensity ("power"//"area") S of the light from the signal and its frequency f. The engineer finds that d is proportional to S^(1//n) . The value of n is.

A particle starts from point x = (-sqrt(3))/(2)A and move towards negative extreme as shown, (a) Find the equation of the SHM (b) Find the time taken by the particle to go directly from its initial position to negative extreme. (c) Find the time taken by the particle to reach at mean position.

Find the number of ways in which 12 different beads can be arranged to form a necklace.