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The shorted wavelength of X- rays emitted from an X- rays tube depends upon
04
Jun
The shorted wavelength of X- rays emitted from an X- rays tube depends upon The shorted wavelength of X- rays emitted from an X- rays tube depends upon June 4, 2021 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 25 - Electromagnetic Waves ,
The percentage power of X-ray increases with the increases in its:
04
Jun
The percentage power of X-ray increases with the increases in its: The percentage power of X- ray increases with the increases in its June 4, 2021 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 25 - Electromagnetic Waves ,
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, [...]