Physics
If focal length of human eye is 2cm, then find the focal length of contact lens, such that a combined focus system of focal length 2.5cm is obtained after using contact lens.
13
Nov
If focal length of human eye is 2cm, then find the focal length of contact lens, such that a combined focus system of focal length 2.5cm is obtained after using contact lens. If focal length of human eye is 2cm such that a combined focus system of focal length 2.5cm is obtained after using contact [...]
Focal length of convex lens is 100cm and focal length of concave lens is 8cm. Find the magnification of the given combination of lens it object is placed at point O.
13
Nov
Focal length of convex lens is 100cm and focal length of concave lens is 8cm. Find the magnification of the given combination of lens it object is placed at point O. Focal length of convex lens is 100cm and focal length of concave lens is 8cm. Find the magnification of the given combination of lens [...]
In the figure, a ray of light is perpendicular to the face AB of a glass prism (μ = 1.52). Find the value of 0 so that the ray is totally reflected at face AC, if the prism is immersed in water (μ = 1.33). Given sin 61° = 0.875
13
Nov
In the figure, a ray of light is perpendicular to the face AB of a glass prism (μ = 1.52). Find the value of 0 so that the ray is totally reflected at face AC, if the prism is immersed in water (μ = 1.33). Given sin 61° = 0.875 a ray of light is [...]
The least distance of vision of a longsighted person is 60 cm. By using a spectacle lens, this distance is reduced to 12 cm. The power of the lens is
13
Nov
The least distance of vision of a longsighted person is 60 cm. By using a spectacle lens, this distance is reduced to 12 cm. The power of the lens is The least distance of vision of a longsighted person is 60 cm. By using a spectacle lens this distance is reduced to 12 cm. The [...]
In a simple microscope of focal length 5cm, final image is formed at the least distance of distinct vision, then its magnification will be
13
Nov
In a simple microscope of focal length 5cm, final image is formed at the least distance of distinct vision, then its magnification will be final image is formed at the least distance of distinct vision In a simple microscope of focal length 5cm then its magnification will be November 13, 2020 Category: AIIMS Last 24 [...]
A 2.0 cm tall object is placed 15 cm in front of a concave mirror of focal length 10 cm. What is the size and nature of the image?
13
Nov
A 2.0 cm tall object is placed 15 cm in front of a concave mirror of focal length 10 cm. What is the size and nature of the image? A 2.0 cm tall object is placed 15 cm in front of a concave mirror of focal length 10 cm. What is the size and nature [...]
For a situation shown in figure, find the refrective index of glass so that it will suffer total internal reflection at the vertical surface.
13
Nov
For a situation shown in figure, find the refrective index of glass so that it will suffer total internal reflection at the vertical surface. find the refrective index of glass so that it will suffer total internal reflection at the vertical surface. For a situation shown in figure November 13, 2020 Category: AIIMS Last 24 [...]
Light wave enters from medium 1 to medium 2. Its velocity in 2nd medium is double from 1st. For total internal reflection the angle of incidence must be greater than
13
Nov
Light wave enters from medium 1 to medium 2. Its velocity in 2nd medium is double from 1st. For total internal reflection the angle of incidence must be greater than Light wave enters from medium 1 to medium 2. Its velocity in 2nd medium is double from 1st. For total internal reflection the angle of [...]
A person uses +1.5 D glasses to have normal vision from 25cm onwards. He uses a + 20D lens as a simple microscope to see an object. Calculate the maximum magnifying power, if he uses the microscope without glasses ?
13
Nov
A person uses +1.5 D glasses to have normal vision from 25cm onwards. He uses a + 20D lens as a simple microscope to see an object. Calculate the maximum magnifying power, if he uses the microscope without glasses ? A person uses +1.5 D glasses to have normal vision from 25cm onwards. He uses [...]
The length of deviation for a glass prism is equal to its refracting angle. The refractive index of glass is 1.5. Then the angle of prism is
13
Nov
The length of deviation for a glass prism is equal to its refracting angle. The refractive index of glass is 1.5. Then the angle of prism is The length of deviation for a glass prism is equal to its refracting angle. The refractive index of glass is 1.5. Then the angle of prism is November [...]