MTG NEET Physics

A glass prism of refractive index 1.5 is immersed in water (refractive index 4/3). A light beam normally on the face AB is totally reflected to reach on the face BC if A glass prism of refractive index 1.5 is immersed in water (refractive index 4/3). A light beam normally on the face AB is [...]

An isosceles prism of angle 120^∘ has a refractive index 1.44. Two parallel rays of monochromatic light enter the prism parallel to each other in air as shown. The rays emerging from the opposite face An isosceles prism of angle 120^∘ has a refractive index 1.44. Two parallel rays of monochromatic light enter the prism [...]

A square card of side length 1 mm is being seen through a magnifying lens of focal length 10 cm. The card is placed at a distance of 9 cm from the lens. The apparent area of the card through the lens is f2 = −10cm and f3 ​ = +30cm). The position of final [...]

The position of final image formed by the given lens combination from the third lens will be at a distance of (f1 ​= +10cm, f2 = −10cm and f3 ​ = +30cm). f2 = −10cm and f3 ​ = +30cm). The position of final image formed by the given lens combination from the third lens [...]

Two thin doubled convex lenses of focal length f1 = 24, f2 = 11 cm are placed a part by a distance of 10 cm. An object is placed in front of f1 at a distance of O1 = 8 cm on the axis of the lens combination. What is the nature and distance from [...]

Two identical glass (μg=3/2) equiconvex lenses of focal length f are kept in contact. The space between the two lenses is filled with water (μw=4/3). The focal length of the combination is Two identical glass (μg=3/2) equiconvex lenses of focal length f are kept in contact. The space between the two lenses is filled with [...]

The radius of curvature of the convex face of a plano-convex lens is 15 cm and the refractive index of the material of the lens is 1.4. Then, the power of the lens in dioptre is the power of the lens in dioptre is The radius of curvature of the convex face of a plano-convex [...]

Two plano-concave lenses (1 and 2) of glass of refractive index 1.5 have radii of curvature 25 cm and 20 cm. They are placed in contact with their curved surface towards each other and the space between them is filled with liquid of refractive index 4/3. Then the combination is The focal length of a [...]

The focal length of a convex lens is 10cm and its refractive index is 1.5 is placed in liquid of refractive index 1.25 then its focal length will be The focal length of a convex lens is 10cm and its refractive index is 1.5 is placed in liquid of refractive index 1.25 then its focal [...]

What is the refractive index of material of a planoconvex lens, if the radius of curvature of the convex surface is 10 cm and focal length of the lens is 30 cm ? if the radius of curvature of the convex surface is 10 cm and focal length of the lens is 30 cm ? [...]