JEE Main 2026 Ray and Wave Optics Practice Sets with Solved Examples

In JEE Physics, one of the most scoring subjects is Optics. It is divided into two parts: Ray Optics (Geometrical Optics) and Wave Optics. The important chapters of the Ray and Wave Optics are the Reflection of light, Refraction of light, Dispersion of light, Optical instruments, Huygens principle and interference of light and Diffraction and polarisation of light. Students who will be appearing in JEE Main 2026 should practice solving examples from this part, as it can help them achieve a good score. The solved examples will be helpful for you all during your JEE Main 2026 preparation. You can find the questions and answers on Ray and Wave Optics in this article.

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JEE Main 2026 Ray and Wave Optics Practice Sets with Soutions

You can find below some of the Ray and Wave Optics solved examples.

Question 1. A ray of light is incident on a plane mirror at an angle of incidence of 30°. Find the angle between the incident and reflected rays.

Solution

Angle between incident and reflected rays = 2i = 2 × 30° = 60°

Answer: 60°

Question 2. An object is placed 20 cm in front of a concave mirror of focal length 10 cm. Find the image distance.

Solution

Step 1: 1/f = 1/v + 1/u

Step 2: 1/10 =1/v + 1/-20

Step 3: 1/v = 1/10 + 1/20 = 3/20

Step 4: v = 20/3 = 6.67 cm

Answer: 6.67 cm

Question 3: Two coherent sources produce interference with a wavelength of 600 nm. Path difference is 1800 nm. Find the nature of the interference.

Solution

Path difference = nλ = 3λ ⇒ Constructive

Answer: Bright fringe

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JEE Main 2026 Chapterwise Ray and Wave Optics Solved Examples PDF Link

Download the chapter-wise practice sets for Ray and Wave Optics with solutions in the PDF here:

Ray and Wave Optics Weightage and Key Areas for JEE Main 2026

The Optics chapter in JEE Main Physics is a part of the first section. Before you start solving the examples, have a look at the weightage and syllabus of this section.

Find below the important topics from Optics chapter to prepare for JEE Main 2026:

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Tips for Solving Ray and Wave Optics Questions for JEE Main 2026

Take a quick look at some of the tips that will help you solve Ray and Wave Optics questions:

• Understand Reflection and refraction, Snell’s law, Total internal reflection (TIR), Interference, diffraction, and polarisation.

• You can learn and remember key formulas.

• Practice drawing mirror and lens ray diagrams, like concave, convex, plane mirrors, etc.

• Solve different types of questions like Conceptual (qualitative) and Formula-based (quantitative).

• Solve previous year papers or mock tests.

You may find the questions from this part to be difficult, but if your basics are clear, it will be easy for you to solve the questions. Try practising as many examples as possible and understand the chapters that you find easy.

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