CUET · PHYSICS · PYQ PAPER 2023
A signal of 5 kHz frequency is amplitude modulated on a carrier wave of frequency 3 MHz. The frequency of the resultant signal are:
- A 3 MHz and 5 kHz
- B 3005 kHz and 2995 kHz
- C 3000 kHz, 3005 kHz and 2995 kHz
- D 3010 kHz and 2990 kHz
Answer & Solution
Correct Answer
(C) 3000 kHz, 3005 kHz and 2995 kHz
Step-by-step Solution
Detailed explanation
\(f_c = 3 \text{ MHz} = 3000 \text{ kHz}\) \(f_m = 5 \text{ kHz}\) \(f_{USB} = f_c + f_m = 3000 \text{ kHz} + 5 \text{ kHz} = 3005 \text{ kHz}\) \(f_{LSB} = f_c - f_m = 3000 \text{ kHz} - 5 \text{ kHz} = 2995 \text{ kHz}\) The frequencies are:…
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
- A moving coil galvanometer has N number of turns in the coil with area A. It carries a current I and the magnetic field is B. The torque acting on the coil is :CUET 2023 Hard
- A proton and an alpha particle accelerated through different potential differences have the same de-Broglie wavelength. The ratio of their respective accelerating potentials isCUET 2025 Medium
- The winding of the solenoid with 1000 turns per meter, core material with relative permeability 400 and carrying a current of 2 A, the magnetisation (M) is approximately given by :CUET 2023 Medium
- Identify the correct statements.
(A) The energy (E) and momentum (p) of a photon are related by p = E/c.
(B) The electrons and photons of the same wavelength, possess the same momentum.
(C) One photon having energy more than work function can emit one photo electron.
(D) Photons do not carry momentum.
Choose the correct answer from the options given below :CUET 2025 Hard - Two capacitors of capacitances 2 \( \mu\text{F} \) and 4 \( \mu\text{F} \) are connected in parallel. A charge of 6 \( \mu\text{C} \) is given to the combination which gets shared. The ratio of the charges on the two capacitors, respectively will beCUET 2025 Medium
- The intensity of a plane monochromatic wave is \( 1380 \text{ Wm}^{-2} \). What is the amplitude of electric field in this wave ? (Take speed of light \( 3 \times 10^{8} \text{ ms}^{-1} \); \( \epsilon_{0} = 8.85 \times 10^{-12} \text{ C}^{2}\text{N}^{-1}\text{m}^{-2} \))CUET 2023 Easy
More PYQs from CUET
- Arrange the following complexes in increasing order of their magnetic moment
(A) \(\left[ Cr \left( H _2 O \right)_6\right]^{3+}\)
\((B)\left[ Co \left( NH _3\right)_6\right]^{3+}\)
\((C)\left[ FeCl _6\right]^{4-}\)
\((D)\left[ Mn ( CN )_6\right]^{3-}\)
Choose the correct answer from the options given below :CUET 2025 Medium - The particular solution of the differential equation \(\frac{d y}{d x}=e^{x^2 / 2}+x y\), when \(x = 0\), \(y = 1\) isCUET 2025 Easy
- Photoelectric work function of a metal is 1 eV. Light of wavelength \( \lambda = 3000\text{\AA} \) falls on it. The photoelectrons come out with maximum kinetic energy of:CUET 2023 Medium
- Area of the region bounded by \(y=3 x, x\)-axis, and \(x=-1\) is :CUET 2023 Easy
- In an AC circuit, the power factor :CUET 2023 Medium
- A cube of side \( a \) has a charge \( Q \) at each of its vertices. What is the potential due to this charge array at the centre of the cube?CUET 2023 Easy