EASY
11th Maharashtra Board
IMPORTANT
Earn 100

What is the focal power of a spherical mirror or a lens? What may be the reason for using P= 1f as its expression?

Important Questions on Optics

EASY
11th Maharashtra Board
IMPORTANT
Physics>Chapter 9 - Optics>Exercises>Q 2
At which positions of the objects do spherical mirror produce (i) Diminished image
EASY
11th Maharashtra Board
IMPORTANT
Physics>Chapter 9 - Optics>Exercises>Q 2
At which positions of the objects do spherical mirror produce (ii) Magnified image ?
MEDIUM
11th Maharashtra Board
IMPORTANT
Physics>Chapter 9 - Optics>Exercises>Q 2
State the restrictions having images produced by spherical mirrors to be appreciably clear.
EASY
11th Maharashtra Board
IMPORTANT
Physics>Chapter 9 - Optics>Exercises>Q 2
Explain the spherical aberrations for spherical mirrors. How can it be minimised? Can it be eliminated by some curved mirrors?
EASY
11th Maharashtra Board
IMPORTANT
Physics>Chapter 9 - Optics>Exercises>Q 2
Define absolute refractive index and relative refractive index. Explain in brief with an illustration for each.
EASY
11th Maharashtra Board
IMPORTANT
Physics>Chapter 9 - Optics>Exercises>Q 2
Explain mirage as an illustration of refraction.
EASY
11th Maharashtra Board
IMPORTANT
Physics>Chapter 9 - Optics>Exercises>Q 2
Under what conditions is total internal reflection possible? Explain it with a suitable example. Define critical angle of incidence and obtain an expression for it. 
MEDIUM
11th Maharashtra Board
IMPORTANT
Physics>Chapter 9 - Optics>Exercises>Q 2
Describe construction and working of optical fibre. What are the advantages of optical fibres communication over electronic communication?