1
MHT CET 2026 20th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
In an interference experiment, the $m^{th}$ bright fringe for light of wavelength $\lambda_1$ coincides with the $n^{th}$ dark fringe for light of wavelength $\lambda_2$ . The ratio $\dfrac{\lambda_2}{\lambda_1}$ is
A
$\dfrac{m}{n-1}$
B
$\dfrac{m}{(2n-1)}$
C
$\dfrac{2m}{(2n-1)}$
D
$\dfrac{2m}{(2n+1)}$
2
MHT CET 2026 20th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
In a biprism experiment, the distance between $4^{th}$ and $13^{th}$ bright band on the same side is '$y$' when light of wavelength $6000$ Å is used. For a light of wavelength '$\lambda$' the distance between $6^{th}$ and $16^{th}$ bright band on the same side is again '$y$'. The value of '$\lambda$' in Å units is
A
$6500$
B
$6300$
C
$5400$
D
$4800$
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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