Download App

Electromagnetic Waves and Communication System — Physics STD 11 Science — Question

Maharashtra BoardEnglish MediumSTD 11 SciencePhysicsElectromagnetic Waves and Communication System1 Mark
MCQ
In amplitude modulation
  • A
    amplitude remains constant, but frequency changes.
  • B
    both amplitude and frequency do not change.
  • C
    both amplitude and frequency change.
  • ✓
    amplitude of the carrier wave changes according to information signal.
✓

Answer

Correct option: D.
amplitude of the carrier wave changes according to information signal.
(d) : In amplitude modulation, amplitude of the carrier wave changes according to information signal.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Electromagnetic Waves and Communication System→Electromagnetic Waves and Communication System — all question types→Physics STD 11 Science question papers→Maharashtra Board STD 11 Science question papers→Maharashtra Board question paper generator→

Similar questions

A wheel has circumference C. If it makes f r.p.s., the linear speed of a point on the circumference is
→
The unit of moment of force is same as _______________ .
→
For a particle having a uniform circular motion, which of the following is constant ____________.
→
Consider following forces: (w) Force due to tension along a string, (x) Normal force given by a surface, (y) Force due to air resistance and (z) Buoyant force or upthrust given by a fluid.
Which of these are electromagnetic forces?
→
A string of length $L$ and force constant $K$ is stretched to obtain extension $l$. It is further stretched to obtain extension $l_1$. The work done in second stretching is
→
The unit vector along $\hat{i}+\hat{j}$ is
→
The equation of motion of a projectile is $y=a x-b x^2$ where a and b are constants of motion. The horizontal range of the projectile is.
→
A bullet hits and gets embedded in solid block resting on a frictionless surface. In this process which one of the following is correct?
→
When a car moves towards east 50 m then towards south 50 m, later on towards west 50 m. finally towards north 50 m, the displacement of the car in magnitude is
→
A unit vector is represented as $(0.8 \hat{i}+b \hat{j}+0.4 \hat{k})$. Hence the value of ' $b$ ' must be
→