Home › CBSE Class 10 › Physics › Light - Reflection and Refraction › When light passes from a less dense medium (air)…
When light passes from a less dense medium (air) into a denser medium (glass), it:
ABends away from the normal
BBends towards the normal
CGoes straight without bending
DReflects back completely
Answer & Solution
Correct answer: B. Bends towards the normal
1. Light slows down on entering a denser medium.
2. By Snell's law n₁ sinθ₁ = n₂ sinθ₂, with n₂ > n₁ ⇒ θ₂ < θ₁.
3. So the refracted ray bends TOWARDS the normal.
4. From denser to rarer (e.g., glass to air), it bends AWAY.
_Source: NCERT Class 10 Science Ch 9 §9.3 Refraction of Light_
Related questions
A convex lens of focal length 20 cm has an object placed at 30 cm from it. The image distaAn object placed at the focus of a concave mirror produces an image:Total internal reflection occurs when light travels from:The lens formula for a thin lens is:A convex lens of focal length 25 cm has power equal to:Power of a lens of focal length f (in metres) is given by:Snell's law of refraction is:The refractive index of a transparent medium is defined as: