AP EAMCET · PHYSICS · Communication System
If the sum of heights of transmitting and receiving antennas in line of sight of communication is ' h ', then the height of receiving antenna, to have the range maximum is
- A \(\frac{h}{2}\)
- B \(\frac{\mathrm{h}}{4}\)
- C 2 h
- D \(\frac{2 \mathrm{~h}}{3}\)
Answer & Solution
Correct Answer
(A) \(\frac{h}{2}\)
Step-by-step Solution
Detailed explanation
Given \(h_t + h_r = h \implies h_t = h - h_r\). Range \(D = \sqrt{2Rh_t} + \sqrt{2Rh_r} = \sqrt{2R(h - h_r)} + \sqrt{2Rh_r}\). For maximum range, \(\frac{dD}{dh_r} = 0\). \(\frac{d}{dh_r} \left( \sqrt{2R(h - h_r)} + \sqrt{2Rh_r} \right) = 0\).…
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
- In Young's double slit experiment, red light of wavelength \(6000 Å\) is used and the \(n\)th bright fringe is obtained at a point \(P\) on the screen. Keeping the same setting, the source of light is replaced by green light of wavelength \(5000 Å\) and now \((n+1)\) th bright fringe is obtained at the point \(P\) on the screen. The value of \(n\) isAP EAMCET 2016 Hard
- In Young's double slit experiment, the two slits are illuminated by a light beam consisting of wavelengths \(4200 Å\) and \(5040 Å\). If the distance between the slits is \(2.4 \mathrm{~mm}\) and the distance between the slits and the screen is \(200 \mathrm{~cm}\), the minimum distance from the central bright fringe to the point where the bright fringes due to both the wavelengths coincide isAP EAMCET 2018 Hard
- A pressure of \(1 \mathrm{~mm}\) of mercury is equivalent toAP EAMCET 2020 Easy
- The upper half of an inclined plane with an angle of inclination \(\phi\), is smooth while the lower half is rough. A body starting from rest at the top of the inclined plane comes to rest at the bottom of the inclined plane. Then the coefficient of friction for the lower half isAP EAMCET 2013 Hard
- A cell in secondary circuit gives null deflection for \(2.5 \mathrm{~m}\) length of potentiometer having \(10 \mathrm{~m}\) length of wire. If the length of the potentiometer wire is increased by \(1 \mathrm{~m}\) without changing the cell in the primary, the position of the null point now isAP EAMCET 2009 Easy
- Which of the following statements regarding damping force of a damped oscillator is NOT correct?AP EAMCET 2023 Easy
More PYQs from AP EAMCET
- The diagram shows different transitions across the energy levels for an electron in a certain atom. Among these, which transition represents the emission of a photon with the most energy?
AP EAMCET 2021 Medium - Identify the point on the line 2x + 3y + 7 = 0, which is at a distance of + 3 units from (1, − 3).AP EAMCET 2021 Medium
- If \(f(x)=\frac{\cos x}{\sin ^2 x+\cos ^4 x}\), for \(x \in R\), then \(f(2002)\) is equal toAP EAMCET 2002 Medium
- If \(\alpha, \beta, \gamma\) are the roots of \(x^3-6 x^2+11 x-6=0\), then the equation having the roots \(\alpha^2+\beta^2, \beta^2+\gamma^2\) and \(\gamma^2+\alpha^2\) isAP EAMCET 2019 Easy
- If \(f:[0,2) \rightarrow[R\) is defined by
\(f(x)=\left\{\begin{array}{cl}1+\frac{2 x}{k} & \text { for } \quad 0 \leq x < 1 \\ k x & \text { for } 1 \leq x < 2\end{array}\right.\) where \(k>0\), and \(f\) is such that \(\lim _{x \rightarrow 1^{-}} f(x)=\lim _{x \rightarrow 1^{+}} f(x)\), thenAP EAMCET 2018 Easy - The foot of the perpendicular drawn from a point A \((1,1,1)\) on to a plane \(\pi\) is \(P(-3,3,5)\). If the equation of the plane parallel to the plane \(\pi\) and passing through the midpoint of AP is \(a x-y+c z+d=0\), then \(a+c-d=\)AP EAMCET 2024 Medium