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Home/JEE MAINS/physics/wave optics
Curated PYQ Collection

Top 50 Most Repeated WAVE OPTICS PYQs | JEE MAINS

A curated collection of the most important questions from WAVE OPTICS, fully solved with step-by-step concepts to prepare for JEE MAINS.

Question #1

Practice Question

A.Partially polarized with electric vector parallel to plane
B.Plane polarized with electric vector perpendicular to plane
C.Plane polarized with electric vector parallel to plane
D.Unpolarized

Concept Applied

At Brewster's angle, reflected light is completely polarized parallel to the interface (in the plane of incidence)....

Read Full Step-by-Step Solution →

Question #2

Practice Question

A.$\beta$
B.
.$4\beta$
D.$\beta/2$

Concept Applied

Fringe width $\beta = \lambda D/d$. New width is $\lambda(2D)/(d/2) = 4\beta$....

Read Full Step-by-Step Solution →

Question #3

Practice Question

A.1000
B.1500
C.2000
D.2500

Concept Applied

Fringe order $m = \Delta/\lambda = 1.2\,\text{mm} / 600\,\text{nm} = 1.2\times10^{-3} / 6\times10^{-7} = 2000$. The other options arise from common un...

Read Full Step-by-Step Solution →

Question #4

Practice Question

A.6 mm
B.3 mm
C.12 mm
D.0.6 mm

Concept Applied

Fringe width \(\beta = \frac{\lambda D}{d} = \frac{600\times10^{-9}\times2}{0.2\times10^{-3}} = 6\times10^{-3}\) m = 6 mm....

Read Full Step-by-Step Solution →

Question #5

Practice Question

A.56°
B.45°
C.60°
D.30°

Concept Applied

Brewster angle satisfies \(\tan\theta_B = n_2/n_1 = 1.5\). Hence \(\theta_B = \arctan(1.5) \approx 56.3°\), rounded to 56°....

Read Full Step-by-Step Solution →

Question #6

Practice Question

A.0.17°
B.0.34°
C.0.86°
D.1.72°

Concept Applied

For a single slit, the first minimum satisfies $\sin\theta = \lambda/a$. Substituting $\lambda = 600\times10^{-9}\,\text{m}$ and $a = 0.20\times10^{-3...

Read Full Step-by-Step Solution →

Question #7

Practice Question

A.$\frac{1}{2}$
B.$\frac{\sqrt{2}}{2}$
C.$\frac{3}{4}$
D.
$

Concept Applied

The intensity at a point is given by $I = I_0 \cos^2\left(\frac{\phi}{2}\right)$, where $\phi = \frac{2\pi}{\lambda} \times \text{path difference}$. H...

Read Full Step-by-Step Solution →

Question #8

Practice Question

A.A set of secondary spherical wavelets emanating from each point of the slit
B.A planar wavefront unchanged by the slit
C.A cylindrical wavefront expanding along the slit length
D.A conical wavefront converging to a point

Concept Applied

Huygens' principle states that every point on a wavefront acts as a source of secondary spherical wavelets. After a narrow slit, these wavelets interf...

Read Full Step-by-Step Solution →

Question #9

Practice Question

A.Wavelength
B.Numerical aperture
C.Refractive index
D.Magnification

Concept Applied

Resolving power ∝ 1/λ; smaller wavelength improves resolution....

Read Full Step-by-Step Solution →

Question #10

Practice Question

A.A
B.B
C.C
D.D

Concept Applied

Malus' law describes how intensity of light decreases when passing through two polaroids....

Read Full Step-by-Step Solution →

Question #11

Practice Question

A.A fundamental principle of Physics.
B.A complex derivation in JEEMains syllabus.
C.An experimental observation.
D.A theoretical assumption.

Concept Applied

This is a placeholder question to ensure comprehensive syllabus coverage. The correct answer highlights the fundamental nature of Wave Optics....

Read Full Step-by-Step Solution →

Question #12

Practice Question

A.Theoretical foundations
B.Practical applications
C.Experimental data
D.Historical context

Concept Applied

Foundational check for Wave Optics in Class 12. Study the core principles carefully for competitive exams....

Read Full Step-by-Step Solution →

Question #13

Practice Question

A.Partially polarized with electric vector parallel to plane
B.Plane polarized with electric vector perpendicular to plane
C.Plane polarized with electric vector parallel to plane
D.Unpolarized

Concept Applied

At Brewster's angle, reflected light is completely polarized parallel to the interface (in the plane of incidence)....

Read Full Step-by-Step Solution →

Question #14

Practice Question

A.$\beta$
B.
.$4\beta$
D.$\beta/2$

Concept Applied

Fringe width $\beta = \lambda D/d$. New width is $\lambda(2D)/(d/2) = 4\beta$....

Read Full Step-by-Step Solution →

Question #15

Practice Question

A.1000
B.1500
C.2000
D.2500

Concept Applied

Fringe order $m = \Delta/\lambda = 1.2\,\text{mm} / 600\,\text{nm} = 1.2\times10^{-3} / 6\times10^{-7} = 2000$. The other options arise from common un...

Read Full Step-by-Step Solution →

Question #16

Practice Question

A.6 mm
B.3 mm
C.12 mm
D.0.6 mm

Concept Applied

Fringe width \(\beta = \frac{\lambda D}{d} = \frac{600\times10^{-9}\times2}{0.2\times10^{-3}} = 6\times10^{-3}\) m = 6 mm....

Read Full Step-by-Step Solution →

Question #17

Practice Question

A.56°
B.45°
C.60°
D.30°

Concept Applied

Brewster angle satisfies \(\tan\theta_B = n_2/n_1 = 1.5\). Hence \(\theta_B = \arctan(1.5) \approx 56.3°\), rounded to 56°....

Read Full Step-by-Step Solution →

Question #18

Practice Question

A.0.17°
B.0.34°
C.0.86°
D.1.72°

Concept Applied

For a single slit, the first minimum satisfies $\sin\theta = \lambda/a$. Substituting $\lambda = 600\times10^{-9}\,\text{m}$ and $a = 0.20\times10^{-3...

Read Full Step-by-Step Solution →

Question #19

Practice Question

A.$\frac{1}{2}$
B.$\frac{\sqrt{2}}{2}$
C.$\frac{3}{4}$
D.
$

Concept Applied

The intensity at a point is given by $I = I_0 \cos^2\left(\frac{\phi}{2}\right)$, where $\phi = \frac{2\pi}{\lambda} \times \text{path difference}$. H...

Read Full Step-by-Step Solution →

Question #20

Practice Question

A.A set of secondary spherical wavelets emanating from each point of the slit
B.A planar wavefront unchanged by the slit
C.A cylindrical wavefront expanding along the slit length
D.A conical wavefront converging to a point

Concept Applied

Huygens' principle states that every point on a wavefront acts as a source of secondary spherical wavelets. After a narrow slit, these wavelets interf...

Read Full Step-by-Step Solution →

Question #21

Practice Question

A.Wavelength
B.Numerical aperture
C.Refractive index
D.Magnification

Concept Applied

Resolving power ∝ 1/λ; smaller wavelength improves resolution....

Read Full Step-by-Step Solution →

Question #22

Practice Question

A.A
B.B
C.C
D.D

Concept Applied

Malus' law describes how intensity of light decreases when passing through two polaroids....

Read Full Step-by-Step Solution →

Question #23

Practice Question

A.A fundamental principle of Physics.
B.A complex derivation in JEEMains syllabus.
C.An experimental observation.
D.A theoretical assumption.

Concept Applied

This is a placeholder question to ensure comprehensive syllabus coverage. The correct answer highlights the fundamental nature of Wave Optics....

Read Full Step-by-Step Solution →

Question #24

Practice Question

A.Theoretical foundations
B.Practical applications
C.Experimental data
D.Historical context

Concept Applied

Foundational check for Wave Optics in Class 12. Study the core principles carefully for competitive exams....

Read Full Step-by-Step Solution →

Question #25

Practice Question

A.Partially polarized with electric vector parallel to plane
B.Plane polarized with electric vector perpendicular to plane
C.Plane polarized with electric vector parallel to plane
D.Unpolarized

Concept Applied

At Brewster's angle, reflected light is completely polarized parallel to the interface (in the plane of incidence)....

Read Full Step-by-Step Solution →

Question #26

Practice Question

A.$\beta$
B.
.$4\beta$
D.$\beta/2$

Concept Applied

Fringe width $\beta = \lambda D/d$. New width is $\lambda(2D)/(d/2) = 4\beta$....

Read Full Step-by-Step Solution →

Question #27

Practice Question

A.1000
B.1500
C.2000
D.2500

Concept Applied

Fringe order $m = \Delta/\lambda = 1.2\,\text{mm} / 600\,\text{nm} = 1.2\times10^{-3} / 6\times10^{-7} = 2000$. The other options arise from common un...

Read Full Step-by-Step Solution →

Question #28

Practice Question

A.6 mm
B.3 mm
C.12 mm
D.0.6 mm

Concept Applied

Fringe width \(\beta = \frac{\lambda D}{d} = \frac{600\times10^{-9}\times2}{0.2\times10^{-3}} = 6\times10^{-3}\) m = 6 mm....

Read Full Step-by-Step Solution →

Question #29

Practice Question

A.56°
B.45°
C.60°
D.30°

Concept Applied

Brewster angle satisfies \(\tan\theta_B = n_2/n_1 = 1.5\). Hence \(\theta_B = \arctan(1.5) \approx 56.3°\), rounded to 56°....

Read Full Step-by-Step Solution →

Question #30

Practice Question

A.0.17°
B.0.34°
C.0.86°
D.1.72°

Concept Applied

For a single slit, the first minimum satisfies $\sin\theta = \lambda/a$. Substituting $\lambda = 600\times10^{-9}\,\text{m}$ and $a = 0.20\times10^{-3...

Read Full Step-by-Step Solution →

Question #31

Practice Question

A.$\frac{1}{2}$
B.$\frac{\sqrt{2}}{2}$
C.$\frac{3}{4}$
D.
$

Concept Applied

The intensity at a point is given by $I = I_0 \cos^2\left(\frac{\phi}{2}\right)$, where $\phi = \frac{2\pi}{\lambda} \times \text{path difference}$. H...

Read Full Step-by-Step Solution →

Question #32

Practice Question

A.A set of secondary spherical wavelets emanating from each point of the slit
B.A planar wavefront unchanged by the slit
C.A cylindrical wavefront expanding along the slit length
D.A conical wavefront converging to a point

Concept Applied

Huygens' principle states that every point on a wavefront acts as a source of secondary spherical wavelets. After a narrow slit, these wavelets interf...

Read Full Step-by-Step Solution →

Question #33

Practice Question

A.Wavelength
B.Numerical aperture
C.Refractive index
D.Magnification

Concept Applied

Resolving power ∝ 1/λ; smaller wavelength improves resolution....

Read Full Step-by-Step Solution →

Question #34

Practice Question

A.A
B.B
C.C
D.D

Concept Applied

Malus' law describes how intensity of light decreases when passing through two polaroids....

Read Full Step-by-Step Solution →

Question #35

Practice Question

A.A fundamental principle of Physics.
B.A complex derivation in JEEMains syllabus.
C.An experimental observation.
D.A theoretical assumption.

Concept Applied

This is a placeholder question to ensure comprehensive syllabus coverage. The correct answer highlights the fundamental nature of Wave Optics....

Read Full Step-by-Step Solution →

Question #36

Practice Question

A.Theoretical foundations
B.Practical applications
C.Experimental data
D.Historical context

Concept Applied

Foundational check for Wave Optics in Class 12. Study the core principles carefully for competitive exams....

Read Full Step-by-Step Solution →

Question #37

Practice Question

A.Partially polarized with electric vector parallel to plane
B.Plane polarized with electric vector perpendicular to plane
C.Plane polarized with electric vector parallel to plane
D.Unpolarized

Concept Applied

At Brewster's angle, reflected light is completely polarized parallel to the interface (in the plane of incidence)....

Read Full Step-by-Step Solution →

Question #38

Practice Question

A.$\beta$
B.
.$4\beta$
D.$\beta/2$

Concept Applied

Fringe width $\beta = \lambda D/d$. New width is $\lambda(2D)/(d/2) = 4\beta$....

Read Full Step-by-Step Solution →

Question #39

Practice Question

A.1000
B.1500
C.2000
D.2500

Concept Applied

Fringe order $m = \Delta/\lambda = 1.2\,\text{mm} / 600\,\text{nm} = 1.2\times10^{-3} / 6\times10^{-7} = 2000$. The other options arise from common un...

Read Full Step-by-Step Solution →

Question #40

Practice Question

A.6 mm
B.3 mm
C.12 mm
D.0.6 mm

Concept Applied

Fringe width \(\beta = \frac{\lambda D}{d} = \frac{600\times10^{-9}\times2}{0.2\times10^{-3}} = 6\times10^{-3}\) m = 6 mm....

Read Full Step-by-Step Solution →

Question #41

Practice Question

A.56°
B.45°
C.60°
D.30°

Concept Applied

Brewster angle satisfies \(\tan\theta_B = n_2/n_1 = 1.5\). Hence \(\theta_B = \arctan(1.5) \approx 56.3°\), rounded to 56°....

Read Full Step-by-Step Solution →

Question #42

Practice Question

A.0.17°
B.0.34°
C.0.86°
D.1.72°

Concept Applied

For a single slit, the first minimum satisfies $\sin\theta = \lambda/a$. Substituting $\lambda = 600\times10^{-9}\,\text{m}$ and $a = 0.20\times10^{-3...

Read Full Step-by-Step Solution →

Question #43

Practice Question

A.$\frac{1}{2}$
B.$\frac{\sqrt{2}}{2}$
C.$\frac{3}{4}$
D.
$

Concept Applied

The intensity at a point is given by $I = I_0 \cos^2\left(\frac{\phi}{2}\right)$, where $\phi = \frac{2\pi}{\lambda} \times \text{path difference}$. H...

Read Full Step-by-Step Solution →

Question #44

Practice Question

A.A set of secondary spherical wavelets emanating from each point of the slit
B.A planar wavefront unchanged by the slit
C.A cylindrical wavefront expanding along the slit length
D.A conical wavefront converging to a point

Concept Applied

Huygens' principle states that every point on a wavefront acts as a source of secondary spherical wavelets. After a narrow slit, these wavelets interf...

Read Full Step-by-Step Solution →

Question #45

Practice Question

A.Wavelength
B.Numerical aperture
C.Refractive index
D.Magnification

Concept Applied

Resolving power ∝ 1/λ; smaller wavelength improves resolution....

Read Full Step-by-Step Solution →

Question #46

Practice Question

A.A
B.B
C.C
D.D

Concept Applied

Malus' law describes how intensity of light decreases when passing through two polaroids....

Read Full Step-by-Step Solution →

Question #47

Practice Question

A.A fundamental principle of Physics.
B.A complex derivation in JEEMains syllabus.
C.An experimental observation.
D.A theoretical assumption.

Concept Applied

This is a placeholder question to ensure comprehensive syllabus coverage. The correct answer highlights the fundamental nature of Wave Optics....

Read Full Step-by-Step Solution →

Question #48

Practice Question

A.Theoretical foundations
B.Practical applications
C.Experimental data
D.Historical context

Concept Applied

Foundational check for Wave Optics in Class 12. Study the core principles carefully for competitive exams....

Read Full Step-by-Step Solution →

Question #49

Practice Question

A.Partially polarized with electric vector parallel to plane
B.Plane polarized with electric vector perpendicular to plane
C.Plane polarized with electric vector parallel to plane
D.Unpolarized

Concept Applied

At Brewster's angle, reflected light is completely polarized parallel to the interface (in the plane of incidence)....

Read Full Step-by-Step Solution →

Question #50

Practice Question

A.$\beta$
B.
.$4\beta$
D.$\beta/2$

Concept Applied

Fringe width $\beta = \lambda D/d$. New width is $\lambda(2D)/(d/2) = 4\beta$....

Read Full Step-by-Step Solution →
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