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…
7 years ago
Physics
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…
7 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…
7 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:…
7 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…
7 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…
7 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,…
7 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:…
7 years ago
A focal length of a lens is 10 cm. What is power of a lens in dioptre?
A focal length of a lens is 10 cm. What is power of a lens in dioptre? Options (a) 0.1…
7 years ago
A luminous object is seperated from a screen by distance d. A convex lens
A luminous object is seperated from a screen by distance d. A convex lens is placed between the object and…
7 years ago