Free MCQ practice

PSEB Class 10 Science Light Practice Test

Practice PSEB Class 10 Science Light with a free 20-question MCQ test. Review reflection of light, laws of reflection, plane mirrors, spherical mirrors, concave mirrors, convex mirrors, focus, focal length, centre of curvature, mirror formula, magnification, refraction of light, refractive index, laws of refraction, convex lenses, concave lenses, lens formula, power of a lens, real images, virtual images, and basic ray diagram concepts. Check your result instantly, read detailed explanations, and repeat the test for focused revision. No registration is required.

Light Practice Test

20 questions. No registration required.

PSEB Class 10 Light Practice

Light is an important Class 10 Science chapter that explains reflection and refraction. Students learn how light behaves when it strikes mirrors, passes from one medium to another, and forms images using mirrors and lenses.

Questions from this chapter may ask students to identify laws of reflection, understand plane mirror images, compare concave and convex mirrors, use focal length and radius of curvature, apply mirror formula and lens formula, calculate magnification, understand refraction, find refractive index, and identify the nature of images formed by lenses.

Use this 20-question practice test before broader Class 10 Science revision. After completing the test, review every explanation carefully and repeat the test after revising weak areas such as ray diagrams, sign convention, mirror formula, lens formula, and power of a lens.

What to Review for Light

Focus on reflection, refraction, spherical mirrors, lenses, image formation, and formulas.

Reflection and Mirrors

Review laws of reflection, incident ray, reflected ray, normal, angle of incidence, angle of reflection, plane mirrors, concave mirrors, convex mirrors, pole, focus, focal length, and centre of curvature.

Refraction and Refractive Index

Practice refraction of light, bending of light, optically rarer medium, optically denser medium, speed of light in different media, refractive index, and laws of refraction.

Lenses and Numerical Problems

Revise convex lens, concave lens, real image, virtual image, lens formula, mirror formula, magnification, power of lens, dioptre, and basic numerical questions based on focal length.

Key Light Concepts to Remember

Before repeating the test, make sure you can connect each optical device with the type of image it forms. Most questions become easier when you first decide whether the situation involves reflection, refraction, a mirror, a lens, or a numerical formula.

  • Light
  • Reflection
  • Law of reflection
  • Incident ray
  • Reflected ray
  • Normal
  • Plane mirror
  • Spherical mirror
  • Concave mirror
  • Convex mirror
  • Pole
  • Principal axis
  • Principal focus
  • Focal length
  • Centre of curvature
  • Radius of curvature
  • Mirror formula
  • Magnification
  • Refraction
  • Refractive index
  • Convex lens
  • Concave lens
  • Lens formula
  • Power of lens
  • Dioptre

Common Mistakes in Light Questions

Light questions often involve diagrams, signs, and image properties. When checking your result, see whether one of these common mistakes affected your answer:

  • Confusing reflection with refraction
  • Forgetting that angle of incidence equals angle of reflection
  • Measuring angles from the mirror surface instead of the normal
  • Confusing concave mirror with convex mirror
  • Forgetting that a concave mirror is a converging mirror
  • Forgetting that a convex mirror is a diverging mirror
  • Confusing real image with virtual image
  • Forgetting that a plane mirror gives virtual and erect image
  • Using radius of curvature as focal length
  • Forgetting that focal length is half of radius of curvature
  • Confusing convex lens with concave lens
  • Forgetting that a convex lens is a converging lens
  • Forgetting that a concave lens is a diverging lens
  • Using mirror formula when lens formula is required
  • Forgetting to convert focal length from centimetre to metre while finding power
  • Confusing watt with dioptre

How to Use This Light Practice Test

Turn a 20-question MCQ test into a focused Class 10 Science revision session.

Complete All 20 Questions

Answer the full test without checking notes so that weak areas in mirrors, lenses, formulas, and image formation are easier to identify.

Identify the Optical Device

Decide whether the question is about a plane mirror, concave mirror, convex mirror, convex lens, concave lens, or refraction.

Review the Explanation

Read explanations for incorrect answers and for correct answers that were selected by guessing.

Revise and Repeat

Revise the difficult ray diagram, formula, or image property and complete the 20-question test again.

Light Practice FAQ

Common questions about this PSEB Class 10 Science Light practice test.

Yes. The Light practice test is free to use and does not require registration, payment, or a subscription.

The test contains 20 multiple-choice questions with four answer options, instant result checking, and detailed explanations.

Review reflection, refraction, plane mirrors, concave mirrors, convex mirrors, spherical mirror terminology, lens types, mirror formula, lens formula, magnification, and power of lens.

The angle of incidence is equal to the angle of reflection, and the incident ray, reflected ray, and normal at the point of incidence lie in the same plane.

Refraction is the bending of light when it passes from one transparent medium to another because its speed changes.

For a spherical mirror, focal length is half of the radius of curvature. This means f = R / 2.

The SI unit of power of lens is dioptre, represented by D.

Yes. Review the explanations, revise difficult concepts, and complete the 20-question test again whenever you need additional practice.

No. The questions are original PSEB-style educational practice material. They are not copied from official Punjab School Education Board examination papers.