1
MHT CET 2026 19th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
In a single slit diffraction pattern, the distance between the plane of the slit and the screen is $1.4$ m. The width of the slit is $0.66$ mm. The second maximum is formed at the distance of $2.8$ mm from the center of the screen. The wavelength of light used is
A
$6500 \ \text{Å}$
B
$5600 \ \text{Å}$
C
$5280 \ \text{Å}$
D
$4600 \ \text{Å}$
2
MHT CET 2026 19th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
In Young's double slit experiment, for the $n^{\text{th}}$ dark fringe ($n = 1, 2, 3, \ldots$) the phase difference of the interfering waves in radian will be
A
$n \cdot \dfrac{\pi}{2}$
B
$(2n + 1)\pi$
C
$(2n - 1)\pi$
D
$(2n - 1)\dfrac{\pi}{2}$
3
MHT CET 2025 5th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A beam of light of intensity $I_0$ falls on a system of three polaroids which are arranged in succession such that the pass (transmission) axis is turned through $60^{\circ}$ with respect to preceding one. The fraction of the incident light intensity that passes through the system is $\left(\cos 60^{\circ}=\frac{1}{2}\right)$

A

$\frac{1}{8}$

B

$\frac{1}{32}$

C

$\frac{1}{16}$

D

$\frac{1}{2}$

4
MHT CET 2025 5th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Resolving power of a telescope can be increased by increasing

A

the diameter of eyepiece.

B

the wavelength of light.

C

the focal length of eye-piece.

D

the diameter of the objective.

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