Light -- Reflection and Refraction Quiz — 7 Free Questions

Question 1

What does the first law of refraction say about the incident ray, the refracted ray, and the normal?

Question 2

When light passes through a rectangular glass slab, is the ray that comes out the other side, the emergent ray, parallel to the ray that went in?

Question 3

Which simple instrument is commonly used in a lab to find the exact position of an image formed by a lens or mirror?

Question 4

The first law of reflection says the angle of incidence and the angle of reflection are always...

Question 5

What is the approximate refractive index of water?

Question 6

In a concave mirror, if the object is placed exactly at the centre of curvature, where does the image form?

Question 7

If a lens's magnification value is negative, is the image real or virtual?

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About Light -- Reflection and Refraction

This quiz covers Chapter 1 of CBSE Class 10 Physics, Light -- Reflection and Refraction, one of the most numerically heavy chapters in the Class 10 Science syllabus.

It opens with the two laws of reflection and the Cartesian sign convention used for every spherical mirror problem, before covering how concave and convex mirrors each form images depending on where the object is placed, and why each type of mirror suits a different everyday use, from shaving mirrors to vehicle rear-view mirrors.

The quiz then turns to refraction: the two laws of refraction, including Snell's law, the idea of a medium's absolute refractive index, and how light passing through a glass slab or a spherical lens actually behaves, including the mirror and lens formulas, magnification, and the power of a lens measured in dioptres.

Every question comes with a clear explanation grounded in the standard NCERT treatment of this chapter, so incorrect answers become as instructive as correct ones, whether you are revising for a school test or a board exam.