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प्रश्न
What is normal focusing?
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उत्तर
The image is formed at infinity. In this position, the eye is most relaxed to view the image.
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संबंधित प्रश्न
If the polarising angle for a given medium is 60°, then the refractive index of the medium is.................
Show, using a simple polaroid, that light waves are transverse in nature. Intensity of light coming out of a polaroid does not change irrespective of the orientation of the pass axis of the polaroid. Explain why.
The refractive indices of glass and water w.r.t. air are 3/2 and 4/3 respectively. Determine the refractive index of glass w.r.t. water.
The glass plate of refractive index 1.732 is to be used as a polarizer, its polarising angle is _______.
State any two methods by which ordinary light can be polarised
Green light is incident at the polarising angle on a certain transparent medium. The angle of refraction is 30° . Find
(i) polarising angle, and
(ii) refractive index of the medium.
What is the difference between polarised light and unpolarised light?
A ray of ordinary light is travelling in air. It is incident on air glass pair at a polarising angle of 56°. Find the angle of refraction in glass.
The transverse nature of light is shown in ______.
Discuss polarisation by selective absorption.
What is unpolarised light?
What is partially polarised light?
State and obtain Malus’ law.
State Brewster’s law.
The reflected light is found to be plane polarised when an unpolarized light falls on a denser medium at 60° with the normal. Find the angle of refraction and critical angle of incidence for total internal reflection in the denser to rarer medium reflection.
A plane mirror produces a magnification of
Can reflection result in plane polarised light if the light is incident on the interface from the side with higher refractive index?
An unpolarized light beam is incident on the polarizer of a polarization experiment and the intensity of light beam emerging from the analyzer is measured as 100 Lumens. Now, if the analyzer is rotated around the horizontal axis (direction of light) by 30° in clockwise direction, the intensity of emerging light will be ______ Lumens.
