Download App

light-reflection and refraction — Science STD 10 — Question

Gujarat BoardEnglish MediumSTD 10Sciencelight-reflection and refraction2 Marks
Question
What do you mean by an optically denser medium and an optically rarer medium?
✓

Answer

  • In comparing two media, the one with the higher refractive index is said to be optically denser than the other.
  • The other medium of lower refractive index is said to be optically rarer than the first one.
  • The speed of light is higher in an optically rarer medium than in an optically denser medium.
  • A ray of light travelling obliquely from an optically rarer medium to an optically denser medium slows down and bends towards the normal at the point of incidence.
  • While, when it travels from an optically denser medium to an optically rarer medium, it speeds up and bends away from the normal at the point of incidence.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[2 Mark Questions]" from light-reflection and refraction→light-reflection and refraction — all question types→Science STD 10 question papers→Gujarat Board STD 10 question papers→Gujarat Board question paper generator→

Similar questions

Is it possible to have an element with atomic number $1.5$ placed between hydrogen and helium?
→
Give scientific reason : The length of small intestine of herbivorous is relatively much longer than that of carnivorous.
→
Write short note on:The water harvesting structures is used largely in level terrains.
→
Name two natural and two artificial ecosystems.
→
What are homologous organs? How do they provide the evidences of evolution?
→
State the type and characteristics of germ cells.
→
State and explain the Joule's law of heating.
→
Write the uses of ethanoic acid.
→
Excessive use of pesticides and Fertilisers should be avoid. Give reason. 
→
What do you mean by a precipitation reaction? Explain by giving examples.
→