Real and apparent depth are explains on the basis of refraction only. The concept of TIR is not involve here.
NEET UG 2011 — Physics Optics
Which of the following is not due to total internal reflection?
Held on 30 Apr 2011 · Verified 9 Jul 2026.
Difference between apparent and real depth of a pond
Mirage on hot summer days
Brilliance of diamond
Working of optical fibre
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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 -
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):
In a certain camera, a combination of four similar thin convex lenses are arranged axially in contact. Then the power of the combination and the total magnification in comparison to the power $(p)$ and magnification $(m)$ for each lens will be, respectively
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