Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Geometrical Optics question

2025 · 24 Jan · Shift 1 · Q65
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Geometrical Optics
  5. /2025 · 24 Jan · Shift 1 · Q65

Geometrical Optics question

2025 · 24 Jan · Shift 1 · Q65

JEE MainPhysicsGeometrical OpticsMCQ+4 / −1
A plano-convex lens having radius of curvature of first surface 2 cm exhibits focal length of f1f_1f1​ in air. Another plano-convex lens with first surface radius of curvature 3 cm has focal length of f2f_2f2​ when it is immersed in a liquid of refractive index 1.2. If both the lenses are made of same glass of refractive index 1.5 , the ratio of f1f_1f1​ and f2f_2f2​ will be
  1. A
    2:32: 32:3
  2. B
    1:31: 31:3
  3. C
    1:21: 21:2
  4. D
    3:53: 53:5
PreviousNext

More from Geometrical Optics

  • A photograph of a landscape is captured by a drone camera at a height of 18 km . The size of the camera film is 2 cm×2 cm and the area of the landscape photographed is 400 km2. The focal length of…2025 · MCQ
  • A thin prism P1​ with angle 4∘ made of glass having refractive index 1.54 , is combined with another thin prism P2​ made of glass having refractive index 1.72 to get dispersion without deviation. The angle of…2025 · MCQ
  • A hemispherical vessel is completely filled with a liquid of refractive index μ. A small coin is kept at the lowest point (O) of the vessel as shown in figure. The minimum value of the refractive index of the liquid so that… Includes diagram2025 · MCQ
  • A concave mirror produces an image of an object such that the distance between the object and image is 20 cm. If the magnification of the image is –3, then the magnitude of the radius of curvature of the mirror is :2025 · MCQ
  • In a long glass tube, mixture of two liquids A and B with refractive indices 1.3 and 1.4 respectively, forms a convex refractive meniscus towards A . If an object placed at 13 cm from the vertex of the meniscus in A forms an image with a…2025 · MCQ
  • Let u and v be the distances of the object and the image from a lens of focal length f. The correct graphical representation of u and v for a convex lens when |u| > f, is2025 · MCQ
  • Two light beams fall on a transparent material block at point 1 and 2 with angle θ1​ and θ2​, respectively, as shown in figure. After refraction, the beams intersect at point 3 which is exactly on the interface at other end… Includes diagram2025 · Numerical
  • A convex lens made of glass (refractive index = 1.5) has focal length 24 cm in air. When it is totally immersed in water (refractive index = 1.33), its focal length changes to2025 · MCQ