Question Text
Question 2 :
When light is incident on a glass block at polarizing angle<br/>a) reflected ray is plane polarized<br/>b) reflected and refracted rays are perpendicular<br/>c) reflected and refracted rays are partially polarized<br/>d) refracted ray is partially polarised<br/>
Question 3 :
Two lenses of focal lengths $+ 100 cm$ and $+ 5 cm$ are used to prepare an astronomical telescope. The minimum tube length will be : (final image is at $\displaystyle \infty $)
Question 4 :
A transverse wave propagating along x-axis is<span>represented by<br>$y\left (x, t \right ) = 8.0 \sin \left (0.5 \pi x - 4 \pi rt - \frac{\pi} {4} \right )$<br>where $x$ is in metres and t is in seconds. The speed of the wave is:-</span>
Question 5 :
When unpolarized light beam is incident from air onto glass $(n=1.5)$ at the polarizing angle,
Question 7 :
The diameter of objective of a telescope is $1m$. Its resolving limit for the light of wavelength $4538\overset {\circ}{A}$, will be :
Question 8 :
A ray of light in air is incident on a glass plate at polarising angle of incidence. It suffers a deviation of $22^\circ$ on entering glass. The angle of polarization is :<br/>
Question 9 :
Pile of plates can be used to produce completely polarised light due to :<br/>
Question 10 :
The average path difference between two waves coming from third and fifth Fresnel zones of a wave front at the centre of the screen is :<br/>