English
Hindi

Question

Download Solution PDF

A plane electromagnetic wave is incident on a plane surface of area A, normally and is perfectly reflected. If energy E strikes the surface in time t then average pressure exerted on the surface is (c = speed of light)

This question was previously asked in
AIIMS BSc NURSING 2023 Memory-Based Paper
Download PDF Attempt in App
View all AIIMS BSc Nursing Papers >
  1. zero
  2. E/Ac
  3. 2E/Ac
  4. E/c

Answer (Detailed Solution Below)

Option 3 : 2E/Ac
Free Tests
View all Free tests >
Free
AIIMS BSc NURSING 2024 Memory-Based Paper
100 Qs. 100 Marks 120 Mins
Start Now

Detailed Solution

Download Solution PDF

Calculation:
The pressure exerted by an electromagnetic wave on a surface can be calculated by the formula:

Pressure (P) = Energy / (Area × Time)

We are given:

  • Energy = E
  • Area = A
  • Time = t
  • Speed of light = c

Since the wave is perfectly reflected, the pressure is twice that of a non-reflected wave.

Therefore, the formula for the average pressure exerted on the surface is:

P = 2E / (A × c)

The correct answer is: 2E / (A × c)

Download Solution PDF
Latest AIIMS BSc Nursing Updates

Last updated on Jun 17, 2025

-> The AIIMS BSc Nursing (Hons) Result 2025 has been announced.

->The AIIMS BSc Nursing (Hons) Exam was held on 1st June 2025

-> The exam for BSc Nursing (Post Basic) will be held on 21st June 2025.

-> AIIMS BSc Nursing Notification 2025 was released for admission to the 2025 academic session.

‹‹ Previous Ques
Next Ques ››
Exams Tests Super Practice

More Electromagnetic Waves Questions

Q1. Which of the following electromagnetic waves have the highest wavelength?

More Electromagnetic Theory Questions

Q1.A plane electromagnetic wave is incident on a plane surface of area A, normally and is perfectly reflected. If energy E strikes the surface in time t then average pressure exerted on the surface is (c = speed of light)
Q2. Which of the following electromagnetic waves have the highest wavelength?
Q3.An infinitely long solenoid of radius r0 centred at origin which produces a time-dependent magnetic field \(\frac{α}{\pi r_0^2} \cos ω t\) (where α and ω are constants) is placed along the z-axis. A circular loop of radius R, which carries unit line charge density is placed, initially at rest, on the xy-plane with its centre on the z-axis. If R > r0, the magnitude of the angular momentum of the loop is
Q4.The electric and magnetic fields at a point due to two independent sources are E1 = E(αî + βĵ), B1 = Bk̂ and E2 = Eî, B2 = -2Bk̂, where α, β, E and B are constants. If the Poynting vector is along î + ĵ, then
Q5.The charge density and current of an infinitely long perfectly conducting wire of radius a, which lies along the z-axis, as measured by a static observer are zero and a constant I, respectively. The charge density measured by an observer, who moves at a speed v = βc parallel to the wire along the direction of the current, is
Q6.The angular width θ of a distant star can be measured by the Michelson radiofrequency stellar interferometer (as shown in the figure below). The distance h between the reflectors M1 and M2 (assumed to be much larger than the aperture of the lens), is increased till the interference fringes (at P0, P on the plane as shown) vanish for the first time. This happens for h = 3 m for a star which emits radiowaves of wavelength 2.7 cm. The measured value of θ (in degrees) is closest to
Q7.Electrons polarized along the x-direction are in a magnetic field B1î  + B2(ĵ cos ωt + k̂ sin ωt), where B1 >> B2 and ω are positive constants. The value of ℏω for which the polarization-flip process is a resonant one, is
Q8.The electric potential on the boundary of a spherical cavity of radius R, as a function of the polar angle θ, is \(V_0 \cos ^2 \frac{\theta}{2}\). The charge density inside the cavity is zero everywhere. The potential at a distance R/2 from the centre of the sphere is
Q9.A small circular wire loop of radius a and number of turns N, is oriented with its axis parallel to the direction of the local magnetic field B. A resistance R and a galvanometer are connected to the coil, as shown in the figure. When the coil is flipped (i.e., the direction of its axis is reversed) the galvanometer measures the total charge Q that flows through it. If the induced emf through the coil EF = IR, then Q is
Q10.A long cylindrical wire of radius R and conductivity σ, lying along the z-axis, carries a uniform axial current density I. The Poynting vector on the surface of the wire is (in the following \(\widehat{\boldsymbol{\rho}}\) and \(\widehat{\varphi}\) denote the unit vectors along the radial and azimuthal directions respectively)
Suggested Test Series
View All >
AIIMS BSc Nursing 2025 Mock Test Series
241 Total Tests with 9 Free Tests
Start Free Test

More Physical Sciences Questions

Q1.A plane electromagnetic wave is incident on a plane surface of area A, normally and is perfectly reflected. If energy E strikes the surface in time t then average pressure exerted on the surface is (c = speed of light)
Q2.Wires that carry equal and opposite currents are twisted because-
Q3.When an object undergoes acceleration
Q4. Which of the following electromagnetic waves have the highest wavelength?
Q5.A variation in the ambient humidity causes a variation in the resistance of the element that is usually mixture of
Q6.Which of the following reactions is not allowed?
Q7.The bisection method is used to find a zero x0 of the polynomial f(x) = x3 - x2 - 1. Since f(1) = -1, while f(2) = 3, the values a = 1 and b = 2 are chosen as the boundaries of the interval in which the x0 lies. If the bisection method is iterated three times, the resulting value of x0 is
Q8.The value of the integral \(\int_{-\infty}^{\infty} d x 2^{-\frac{|x|}{\pi}} δ(\sin x)\) where δ(x) is the Dirac delta function, is
Q9.In a one-dimensional system of N spins, the allowed values of each spin are σ1 = {1,2,3,...,q}, where q ≥ 2 is an integer. The energy of the system is \(-J \sum_{i=1}^N \delta_{\sigma_i, \sigma_{i+1}}\) where J > 0 is a constant. If periodic boundary conditions are imposed, the number of ground states of the system is
Q10.The phase shifts of the partial waves in an elastic scattering at energy E are δ0 = 12°, δ1 = 4° and \(\delta_{\ell \geq 2} \simeq 0^{\circ}\). The best qualitative depiction of θ-dependence of the differential scattering cross-section \(\frac{d \sigma}{d \cos \theta}\) is
Testbook Edu Solutions Pvt. Ltd.
1st & 2nd Floor, Zion Building,
Plot No. 273, Sector 10, Kharghar,
Navi Mumbai - 410210
support@testbook.com
Toll Free:1800 833 0800
Office Hours: 10 AM to 7 PM (all 7 days)
Company
About usCareers We are hiringTeach Online on TestbookPartnersMediaSitemap
Products
Test SeriesTestbook PassOnline CoursesOnline VideosPracticeBlogRefer & EarnBooks
Copyright © 2014-2022 Testbook Edu Solutions Pvt. Ltd.: All rights reserved
User PolicyTermsPrivacy
Hot Links： teen patti lotus teen patti master old version teen patti rules teen patti tiger