ICSE Class 10 Physics Refraction through Glass block and Prism

Q.

Refractive index of a medium can be expressed as a ratio of



Q.

Light enters from air to a glass slab having a refractive index 1.5. What is the speed of light in the glass slab? 



Refractive Index

Explain the rules for the ray diagram for spherical lenses. Draw ray diagram for image formation by spherical lenses.