Physics

A person uses +1.5 D glasses to have normal vision from 25 cm onwards. He uses a 20 D lens as a simple microscope to see an object. Calculate the maximum magnifying power, if he uses the microscope without the glasses. A person uses +1.5 D glasses to have normal vision from 25 cm onwards. [...]

The near point of distinct vision is at 1 m for an elderly person. What power of lens is to be used to bring the near point to the minimum distance of distinct vision (25 cm)? The near point of distinct vision is at 1 m for an elderly person. What power of lens 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 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 October [...]

The frequency of a light wave in a material is 2×10^14Hz and wavelength is 5000 Å. The refractive index of material will be The frequency of a light wave in a material is 2×10^14Hz and wavelength is 5000 Å. The refractive index of material will be October 27, 2020 Category: AIIMS Last 24 Years Solved [...]

In a convex lens of focal length F, the minimum distance between an object and its real image must be : In a convex lens of focal length F the minimum distance between an object and its real image must be : October 27, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics [...]

A far sighted person has his near point 50 cm. Find the power of lens he should use to see at 25 cm clearly. A far sighted person has his near point 50 cm. Find the power of lens he should use to see at 25 cm clearly. October 27, 2020 Category: AIIMS Last 24 [...]

Two lens of focal length −20cm and +10cm are put in combination, find the power of the combination. find the power of the combination. Two lens of focal length −20cm and +10cm are put in combination October 27, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions , Chapter [...]

For a person near point of vision is 100 cm. Then the power of lens he must wear so as to have normal vision, should be: For a person near point of vision is 100 cm. Then the power of lens he must wear so as to have normal vision should be: October 27, 2020 [...]

A short linear object of length l. lies along the axis of a concave mirror, of focal length f, at a distance d from the pole of the mirror. The size of the image is then (nearly) A short linear object of length l. lies along the axis of a concave mirror at a distance [...]

In a concave mirror, an object is placed a distance d1 from the focus and the real image is formed at a distance d2 from the focus. Then the focal length of the mirror is an object is placed a distance d1 from the focus and the real image is formed at a distance d2 [...]