MHT CET 2026 18th April Morning Shift | Wave Optics Question 17 | Physics

In a certain region of the screen, number of fringes formed is observed to be 8 in Young's double slit experiment when light of wavelength $6600\ \text{Å}$ is used. If the light of wavelength $4400\ \text{Å}$ is used, the number of fringes observed in the same region of the screen will be

$10$

$12$

$16$

$18$

MHT CET 2026 18th April Morning Shift

MCQ (Single Correct Answer)

-0

In a Fraunhofer diffraction of a single slit, when a slit is illuminated by a light of wavelength $6480\ \text{Å}$, angular width of central maximum is measured. When the slit is illuminated by light of another wavelength '$\lambda$' the angular width decreases by $25\%$. The value of $\lambda$ in $\text{Å}$ units is

$4220$

$4530$

$4860$

$5230$

MHT CET 2026 17th April Evening Shift

MCQ (Single Correct Answer)

-0

An unpolarised light of intensity $64 \text{ Wm}^{-2}$ passes through three polarizers successively such that the transmission axis of last polarizer is crossed with the first. The intensity of the emerging light is $6 \text{ Wm}^{-2}$. The angle between the transmission axis of the first two polarizers is

$\dfrac{1}{2}\sin^{-1}\left(\dfrac{\sqrt{3}}{2}\right)$

$\dfrac{1}{2}\cos^{-1}\left(\dfrac{\sqrt{3}}{2}\right)$

$\dfrac{1}{2}\sin^{-1}\left(\dfrac{1}{\sqrt{3}}\right)$

$\dfrac{1}{2}\cos^{-1}\left(\dfrac{1}{\sqrt{3}}\right)$

MHT CET 2026 17th April Evening Shift

MCQ (Single Correct Answer)

-0

In Young's experiment, the intensity ratio of the maxima and minima in an interference pattern produced by two coherent sources is $36 : 1$. The ratio of the amplitudes of the two individual sources will be

$4 : 7$

$5 : 7$

$7 : 5$

$7 : 4$

PREVIOUS NEXT

MHT CET Subjects

Browse all chapters by subject

Chemistry

Physical Chemistry

Some Basic Concepts of Chemistry Atomic Structure States of Matter Thermodynamics Chemical Equilibrium Ionic Equilibrium Liquid Solution Redox Reactions Surface Chemistry Solid State Electrochemistry Chemical Kinetics Nuclear Chemistry

Inorganic Chemistry

Periodic Table and Periodicity Chemical Bonding and Molecular Structure Metallurgy Hydrogen and It's Compounds s-Block Elements p-Block Elements d and f Block Elements Coordination Compounds Environmental Chemistry

Organic Chemistry

IUPAC Nomenclatures General Organic Chemistry Isomerism Hydrocarbons Haloalkanes and Haloarenes Alcohol, Phenols and Ethers Aldehyde and Ketone Carboxylic Acids and Its Derivatives Compounds Containing Nitrogen Polymers Biomolecules Chemistry in Everyday Life Practical Organic Chemistry