1
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Change Language
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 polaroids, is ( $I 0_0$ is the intensity of polarised light after passing through the first polaroid):
A
$\frac{I_0}{8}$
B
$\frac{I_0}{16}$
C
$\frac{I_0}{2}$
D
$\frac{I_0}{4}$
2
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Change Language

An unpolarized light beam travelling in air is incident on a medium of refractive index 1.73 at Brewster's angle. Then

A
Both reflected and transmitted light are perfectly polarized with angles of reflection and refraction close to $60^{\circ}$ and $30^{\circ}$, respectively
B
Transmitted light is completely polarized with angle of refraction close to $30^{\circ}$
C
Reflected light is completely polarized and the angle of reflection is close to $60^{\circ}$
D
Reflected light is partially polarized and the angle of reflection is close to $30^{\circ}$
3
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1
Change Language

Two slits in Young's double slit experiment are $$1.5 \mathrm{~mm}$$ apart and the screen is placed at a distance of $$1 \mathrm{~m}$$ from the slits. If the wavelength of light used is $$600 \times 10^{-9} \mathrm{~m}$$ then the fringe separation is

A
$$4 \times 10^{-5} \mathrm{~m}$$
B
$$9 \times 10^{-8} \mathrm{~m}$$
C
$$4 \times 10^{-7} \mathrm{~m}$$
D
$$4 \times 10^{-4} \mathrm{~m}$$
4
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1
Change Language

Interference pattern can be observed due to superposition of the following waves:

A. $$y=a \sin \omega t$$

B. $$y=a \sin 2 \omega t$$

C. $$y=a \sin (\omega t-\phi)$$

D. $$y=a \sin 3 \omega t$$

Choose the correct answer from the options given below.

A
B and C
B
B and D
C
A and C
D
A and B
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