TS EAMCET · Physics · Communication System
Match Column A (layers in the ionosphere for skywave propagation) with Column B (their height range)
\(\begin{array}{llll}\mathrm{A} & \mathrm{B} & \mathrm{C} & \mathrm{D}\end{array}\)
- A \(\begin{array}{llll}\text { I } & \text { II } & \text { III } & \text { IV }\end{array}\)
- B \(\begin{array}{llll}\text { IV } & \text { III } & \text { I } & \text { II }\end{array}\)
- C \(\begin{array}{llll}\text { IV } & \text { III } & \text { II } & \text { I }\end{array}\)
- D \(\begin{array}{llll}\text { IIII } & \text { IV } & \text { I } & \text { II }\end{array}\)
Answer & Solution
Correct Answer
(C) \(\begin{array}{llll}\text { IV } & \text { III } & \text { II } & \text { I }\end{array}\)
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & \text { D-layer - } 65-75 \mathrm{~km} \\ & \text { E-layer - } 95-120 \mathrm{~km} \\ & \mathrm{~F}_1 \text {-layer - } 170-190 \mathrm{~km} \\ & \mathrm{~F}_2 \text {-layer - } 250-400 \mathrm{~km}\end{aligned}\)
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
- When a wire of length \(10 \mathrm{~m}\) is subjected to a force of \(100 \mathrm{~N}\) along its length, the lateral strain produced is \(0.01 \times 10^{-3} \mathrm{~m}\). The Poisson's ratio was found to be 0.4 . If the area of cross-section of wire is \(0.025 \mathrm{~m}^2\), its Young's modulus isTS EAMCET 2007 Medium
- In a meter bridge two gaps in the metallic strip are connected by \(3 \Omega\) and \(9 \Omega\) resistors. What should be the value of shunt that needs to be added to \(9 \Omega\) resistor to shift balancing point by \(25 \mathrm{~cm}\) ?TS EAMCET 2020 Easy
- A boat of mass \(1000 \mathrm{~kg}\) goes from rest to speed \(20.0 \mathrm{~m} / \mathrm{s}\) in \(5.0 \mathrm{~s}\). The water exerts a constant drag force and the acceleration of the boat is constant. If the average power required by the boat is \(45000 \mathrm{~W}\), then the magnitude of the drag force isTS EAMCET 2022 Medium
- A meter scale made of steel, reads accurately at \(25^{\circ} \mathrm{C}\). Suppose in an experiment an accuracy of \(0.06 \mathrm{~mm}\) in \(1 \mathrm{~m}\) is required, the range of temperature in which the experiment can be performed with this meter scale is (Coefficient of linear expansion of steel is \(11 \times 10^{-6} /{ }^{\circ} \mathrm{C}\) )TS EAMCET 2017 Medium
- The band gap in a semi-conductor is \(0.6 \mathrm{eV}\). The maximum wavelength of electromagnetic radiation which can create a hole-electron pair in this semiconductor is equal to [Use \(h c=1242 \mathrm{eV}-\mathrm{nm}\) ]TS EAMCET 2022 Easy
- A liquid flows steadily through a cylindrical pipe having a radius 2R at a point A and radius R at point B farther along the flow direction. If the velocity at point B is 4v, what will be the velocity at point A?TS EAMCET 2022 Easy
More PYQs from TS EAMCET
- A carrier signal of frequency and peak voltage of is modulated by a message signal of frequency and peak voltage of . Let be the modulation index and be side bands produced. The correct statement isTS EAMCET 2020 Easy
- An object is moving in a straight line under the influence of a source of constant power. If \(v\) and \(t\) are velocity and time respectively, thenTS EAMCET 2022 Easy
- Consider a parallel plate capacitor which is maintained at potential \(200 \mathrm{~V}\). The separation distance between the plates of capacitor and the area of plates are \(1 \mathrm{~mm}\) and \(20 \mathrm{~cm}^2\), respectively. Calculate displacement current in \(1 \mu \mathrm{s}\).TS EAMCET 2020 Hard
- The position of an object moving along \(X\)-axis is given by \(x=\alpha+\beta t^2\), where \(\alpha\) and \(\beta\) are constants with appropriate dimensions and \(t\) is time in seconds. The average velocity between \(t=2 \mathrm{~s}\) and \(4 \mathrm{~s}\) is \(12 \mathrm{~m} / \mathrm{s}\). If \(\alpha=8 \mathrm{~m}\), then the value of \(\beta\) isTS EAMCET 2020 Easy
- The magnetic field at a point P on the axis of a short bar magnet of magnetic moment M is B. If another short bar magnet of magnetic moment 2 M is placed on the first magnet such that their axes are perpendicular and their centres coincide. The resultant magnetic field at the point P due to both the magnets isTS EAMCET 2025 Medium
- Three point charges \(1 \mathrm{C},-2 \mathrm{C}\) and \(-2 \mathrm{C}\) are placed at the vertices of an equilateral triangle of side 1 metre. The work done by an external force to increase the separation of the charges to 2 metre in joule is ( \(\varepsilon_0=\) permittivity of air)TS EAMCET 2004 Easy