MCQ
In frequency modulated wave
- ✓frequency varies with time
- Bboth frequency and amplitude vary with time
- Camplitude varies with time
- Dboth frequency and amplitude are constant.
✓
Answer
Correct option: A.
frequency varies with time
(a) : In frequency modulated wave frequency varies with time.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A magnetic dipole has magnetic length 10 cm and pole strength 100 Am. Its magnetic dipole moment is ………………. Am².
A car moving with a velocity 6.25 $ms ^{-1}$ is decelerated with $2.5 \sqrt{ v }$ $ms ^{-2}$ ('v' is instantaneous velocity). Time taken by the car to come to rest is
→Two metal wires ' $P$ ' and ' $Q$ ' of same length and material are stretched by same load. Their masses are in the ratio $m_1: m_2$. The ratio of elongations of wire ' $P$ ' to that of ' $Q$ ' is
→The horizontal distance x and the vertical height y of a projectile at a time t are given by x = at and $y=b t^2+c t$ where a, b and c are constants The magnitude of the velocity of the projectile 1 second after it is fired is
→The bob of a conical pendulum undergoes ___________
A lift is going up. The variation in the speed of the lift is as given in the graph. What is the height to which the lift takes the passengers?
When potential difference is applied across an electrolyte, then Ohm’s law is obeyed at
The increase in energy of a metal bar of length ' $L$ ' and cross-sectional area ' $A$ ' when compressed with a load ${ }^{\prime} M$ ' along its length is ( $Y=$ Young's modulus of the material of metal bar)
→A magnetic needle kept nonparallel to the magnetic field in a nonuniform magnetic field experiences
An aircraft is moving with uniform velocity $150 m / s$ in the space. If all the forces acting on it are balanced, then it will
→