AP EAMCET · PHYSICS · Communication System
If the ratio of the maximum and minimum amplitudes of an amplitude modulated wave is \(7: 3\), then the modulation index is
- A \(0.6\)
- B \(0.7\)
- C \(0.4\)
- D \(0.3\)
Answer & Solution
Correct Answer
(C) \(0.4\)
Step-by-step Solution
Detailed explanation
\( \mu = \frac{A_{max} - A_{min}}{A_{max} + A_{min}} \) \( \mu = \frac{7 - 3}{7 + 3} \) \( \mu = \frac{4}{10} = 0.4 \)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from PHYSICS
- Choose the physical quantity pair with the same dimensions.AP EAMCET 2020 Easy
- A cylinder of mass \(12 \mathrm{~kg}\) is sliding on plane with an initial velocity \(20 \mathrm{~ms}^{-1}\). If the coefficient of friction between the surface and the cylinder is 0.5 , before stopping, the cylinder describes a distance ofAP EAMCET 2021 Medium
- If \(200 \mathrm{MeV}\) of energy is released in the fission of one nucleus of \({ }_{92}^{236} \mathrm{U}\), the number of nuclei that must undergo fission to release an energy of \(1000 \mathrm{~J}\) isAP EAMCET 2011 Medium
- Two stretched strings A and B when vibrated together produce 4 beats per second. If the tension applied to the string A increased, the number of beats produced per second is increased to 7. If the frequency of string B is 480 Hz initially. The frequency of string A isAP EAMCET 2024 Easy
- Match the following
\(\begin{array}{ll}
\text{List - I} & \text{List - II} \\
\text{i) Isothermal process} & \text{a)} 0 \\
\text{ii) Isobaric process} & \text{b)} \frac{1}{\gamma-1}\left[\mathrm{P}_2 \mathrm{~V}_2-\mathrm{P}_1 \mathrm{~V}_1\right] \\
\text{iii) Isochoric process} & \text{c)} \mu \mathrm{RT} \ln \left(\frac{V_2}{V_1}\right) \\
\text{iv) Adiabatic process} & \text{d)} \mathrm{P}\left(\mathrm{V}_2-\mathrm{V}_1\right) \\
\end{array}\)
The correct answer isAP EAMCET 2017 Easy - When three NAND logic gates are connected as shown in the figure, then the logic gate equivalent to the circuit is
AP EAMCET 2025 Medium
More PYQs from AP EAMCET
- In a triangle \(\mathrm{ABC}\), if \(\mathrm{a}-2 \mathrm{~b}+\mathrm{c}=0\), then \(\cot \left(\frac{A}{2}\right) \cdot \cot \left(\frac{C}{2}\right)=\)AP EAMCET 2022 Medium
- Which of the following are carbonate ores?
I. Magnetite
II. Kaolinite
III. Siderite
IV. CalamineAP EAMCET 2019 Easy - A particle aimed at a target, projected with an angle \(15^{\circ}\) with the horizontal is short of the target by \(10 \mathrm{~m}\). If projected with an angle of \(45^{\circ}\) is away from the target by \(15 \mathrm{~m}\), then the angle of projection to hit the target isAP EAMCET 2015 Hard
- The system of equations \(x+y+z=5, x+2 y+a z=9, x+2 y+z=b\) is inconsistent ifAP EAMCET 2017 Easy
- Poly dispersity index of a polymer is 1.25 If \(\overline{\mathrm{M}}_{\mathrm{n}}\) is 800 , what is its \(\overline{\mathrm{M}}_{\mathrm{w}}\) ?AP EAMCET 2023 Hard
- If and then is equal toAP EAMCET 2021 Medium