Cengage JEE Mains Physics by B.M Sharma
The area of television telecast is made twice, the height of antenna will be changed as:
04
Jun
The area of television telecast is made twice, the height of antenna will be changed as: The area of television telecast is made twice the height of antenna will be changed as June 4, 2021 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 25 - Electromagnetic Waves ,
If e0 and u0 represent the permittivity and permeability of vacuum and e and u represent the permittivity and permeability of medium , the refractive index of the medium is given by
04
Jun
If e0 and u0 represent the permittivity and permeability of vacuum and e and u represent the permittivity and permeability of medium , the refractive index of the medium is given by If e0 and u0 represent the permittivity and permeability of vacuum and e and u represent the permittivity and permeability of medium the [...]
If μ0 be the permeability and k0 , the dielectric constant of a medium, its refractive index is given by
04
Jun
If μ0 be the permeability and k0 , the dielectric constant of a medium, its refractive index is given by If μ0 be the permeability and k0 its refractive index is given by the dielectric constant of a medium June 4, 2021 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 25 - Electromagnetic [...]
In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of 2.5×10^10Hz and amplitude 480V/m. The amplitude of oscillating magnetic field will be
04
Jun
In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of 2.5×10^10Hz and amplitude 480V/m. The amplitude of oscillating magnetic field will be In a plane electromagnetic wave the electric field oscillates sinusoidally at a frequency of 2.5×10^10Hz and amplitude 480V/m. The amplitude of oscillating magnetic field will be June 4, 2021 [...]
In X-ray tube the accelerating potential applied at anode is V volt. The minimum wavelength of the emitted X-ray will be
04
Jun
In X-ray tube the accelerating potential applied at anode is V volt. The minimum wavelength of the emitted X-ray will be In X-ray tube the accelerating potential applied at anode is V volt. The minimum wavelength of the emitted X-ray will be June 4, 2021 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter [...]
A photosensitive material is at 9 m to the left of the origin and the source of light is at 7 m to the right of the origin along x-axis. The photosensitive material and the source of light start from rest and move, respectively, with 8iˆms^−1 and 4iˆms^−1. The ratio of intensities at t=0 to t=3s as received by the photosensitive material is
04
Jun
A photosensitive material is at 9 m to the left of the origin and the source of light is at 7 m to the right of the origin along x-axis. The photosensitive material and the source of light start from rest and move, respectively, with 8iˆms^−1 and 4iˆms^−1. The ratio of intensities at t=0 to [...]
A particle of mass ‘m’ is projected from ground with velocity u making angle θ with the vertical. The de-Broglie wave length of the particle at the highest point is:
04
Jun
A particle of mass ‘m’ is projected from ground with velocity u making angle θ with the vertical. The de-Broglie wave length of the particle at the highest point is: A particle of mass 'm' is projected from ground with velocity u making angle θ with the vertical. The de-Broglie wave length of the particle [...]
All electrons ejected from a surface by incident light of wavelength 200nm can be stopped before traveling 1m in the direction of a uniform electric field of 4NC^−1. The work function of the surface is
04
Jun
All electrons ejected from a surface by incident light of wavelength 200nm can be stopped before traveling 1m in the direction of a uniform electric field of 4NC^−1. The work function of the surface is How many photons are emitted per second by a 5 m W laser source operating at 632.8 nm? June 4, [...]
Find the ratio of de Broglie wavelength of a proton and as α-particle which have been accelerated through same potential difference.
04
Jun
Find the ratio of de Broglie wavelength of a proton and as α-particle which have been accelerated through same potential difference. Find the ratio of de Broglie wavelength of a proton and as α-particle which have been accelerated through same potential difference. June 4, 2021 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter [...]
An α-particle and a proton are fired through the same magnetic field which is perpendicular to their velocity vectors. The α-particles and the proton move such that radius of curvature of their paths is same. Find the ratio of their de Broglie wavelengths.
04
Jun
An α-particle and a proton are fired through the same magnetic field which is perpendicular to their velocity vectors. The α-particles and the proton move such that radius of curvature of their paths is same. Find the ratio of their de Broglie wavelengths. How many photons are emitted per second by a 5 m W [...]