We know Refractive index =μ0ε0με=μ0ε0(1.5)μ0(2)ε0=3
ε0 and μ0 are the electric permittivity and magnetic permeability of free space respectively. If the corresponding quantities of a medium are 2ε0 and 1.5μ0 respectively, the refractive index of the medium will nearly be
Held on 30 Apr 2023 · Verified 9 Jul 2026.
3
2
2
3
Sign in to track your attempts and accuracy.
Sign in to keep a private note on this question. Nothing you write is ever public.
The refractive index of glass is 1.5. The speed of light in glass is:
Two thin lenses of focal lengths f₁ = +20 cm and f₂ = -10 cm are in contact. The power of the combination is:
An unpolarized light beam travelling in air is incident on a medium of refractive index 1.73 at Brewster's angle. Then -
A microscope has an objective of focal length 2 cm , eyepiece of focal length 4 cm and the tube length of 40 cm . If the distance of distinct vision of eye is 25 cm , the magnification in the microscope is :
The intensity of transmitted light when a polaroid sheet, placed between two crossed polaroids at $22.5^{\circ}$ from the polarization axis of one of the polaroid, is ( $\mathrm{I}_0$ is the intensity of polarised light after passing through the first polaroid):
Work through every NEET UG Optics PYQ, year by year.