Two lenses of power 15 D and -3 D are placed in contact.
Two lenses of power 15 D and -3 D are placed in contact. The focal length of the combinations is…
7 years ago
Physics
The equiconvex lens has focal length f. If it is cut perpendicular to the principal
The equiconvex lens has focal length f. If it is cut perpendicular to the principal axis passing through optical centre,…
7 years ago
In vacuum, to travel distance d, light takes time t and in medium to travel distance
In vacuum, to travel distance d, light takes time t and in medium to travel distance 5d, it takes time…
7 years ago
An object placed at 20 cm in front of a concave mirror produces three times
An object placed at 20 cm in front of a concave mirror produces three times magnified real image. What is…
7 years ago
To get three images of single object, one should have two plane mirrors at an angle of
To get three images of single object, one should have two plane mirrors at an angle of Options (a) 60⁰…
7 years ago
To measure the roughness of the surface of a material, which of the following microscope
To measure the roughness of the surface of a material, which of the following microscope is preferred for better result…
7 years ago
A ray enters a glass sphere of refractive index μ=√3 at an angle of incidence of 60⁰
A ray enters a glass sphere of refractive index μ=√3 at an angle of incidence of 60⁰, a ray is…
7 years ago
The limiting angle of incidence for an optical ray that can be transmitted
The limiting angle of incidence for an optical ray that can be transmitted by an equilateral prism of refractive index…
7 years ago
A parallel beam of light of wavelength λ is incident normally on a narrow slit
A parallel beam of light of wavelength λ is incident normally on a narrow slit. A diffraction pattern is formed…
7 years ago
In Young’s double slit experiment the distance between the slits and the screen
In Young's double slit experiment the distance between the slits and the screen is doubled. The separation between the slits…
7 years ago