Which one of the following is not due to total internal reflection?
Which one of the following is not due to total internal reflection? Options (a) working of optical fibre (b) Difference…
8 years ago
Questions
An object is 8 cm high. It is desired to form a real image 4 cm high at 60 cm from
An object is 8 cm high. It is desired to form a real image 4 cm high at 60 cm…
8 years ago
A ray of light travelling in a transparent medium of refractive index µ, falls on surface
A ray of light travelling in a transparent medium of refractive index µ, falls on surface seperating the medium from…
8 years ago
For a normal eye, the cornea of eye provides a converging power 40 D and the least
For a normal eye, the cornea of eye provides a converging power 40 D and the least converging power of…
8 years ago
A boy is trying to start a fire by focusing sunlight on a piece of paper using
A boy is trying to start a fire by focusing sunlight on a piece of paper using an equiconvex lens…
8 years ago
Two thin lenses of focal lengths f₁ and f₂ are in contact and coaxial.
Two thin lenses of focal lengths f₁ and f₂ are in contact and coaxial. The power of the combination is:…
8 years ago
Diameter of the objective of a telescope is 200 cm. What is the resolving power
Diameter of the objective of a telescope is 200 cm. What is the resolving power of a telescope? Take wavelength…
8 years ago
An astronomical telescope arranged for normal adjustment has a magnification of 6.
An astronomical telescope arranged for normal adjustment has a magnification of 6. If the length of the telescope is 35…
8 years ago
The intermediate image formed by the objective of a compound microscope is
The intermediate image formed by the objective of a compound microscope is Options (a) real, inverted and magnified (b) real,…
8 years ago
Astigmatism is corrected by using
Astigmatism is corrected by using Options (a) cylindrical lens (b) plano-convex lens (c) plano-concave lens (d) convex lens Correct Answer:…
8 years ago