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

2022 · Shift 1 · Q48
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Advanced
  3. /Physics
  4. /Geometrical Optics
  5. /2022 · Shift 1 · Q48

Geometrical Optics question

2022 · Shift 1 · Q48

JEE AdvancedPhysicsGeometrical OpticsMultiple correct+4 / −2
Three plane mirrors form an equilateral triangle with each side of length LLL. There is a small hole at a distance l>0l\gt 0l>0 from one of the corners as shown in the figure. A ray of light is passed through the hole at an angle θ\thetaθ and can only come out through the same hole. The cross section of the mirror configuration and the ray of light lie on the same plane. JEE Advanced 2022 Paper 1 Online Physics - Geometrical Optics Question 23 English Which of the following statement(s) is(are) correct?
  1. A
    The ray of light will come out for θ=30∘\theta=30^{\circ}θ=30∘, for 0<l<L0\lt l \lt L0<l<L.
  2. B
    There is an angle for l=L2l=\frac{L}{2}l=2L​ at which the ray of light will come out after two reflections.
  3. C
    The ray of light will NEVER come out for θ=60∘\theta=60^{\circ}θ=60∘, and l=L3l=\frac{L}{3}l=3L​.
  4. D
    The ray of light will come out for θ=60∘\theta=60^{\circ}θ=60∘, and 0<l<L20 \lt l \lt \frac{L}{2}0<l<2L​ after six reflections.
PreviousNext

More from Geometrical Optics

  • List I contains four combinations of two lenses (1 and 2) whose focal lengths (in cm) are indicated in the figures. In all cases, the object is placed 20 cm from the first lens on the left, and the distance between… Includes table Includes diagram2022 · MCQ
  • Consider a configuration of n identical units, each consisting of three layers. The first layer is a column of air of height h=31​ cm, and the second and third layers are of equal thickness d=23​−1​ cm… Includes diagram2022 · Numerical
  • An object and a concave mirror of focal length f=10 cm both move along the principal axis of the mirror with constant speeds. The object moves with speed V0​=15 cm s−1 towards the mirror with respect… Includes diagram2022 · Numerical
  • An extended object is placed at point O, 10 cm in front of a convex lens L1 and a concave lens L2 is placed 10 cm behind it, as shown in the figure. The radii of curvature of all the curved surfaces in both the lenses ae 20 cm. The… Includes diagram2021 · MCQ
  • A wide slab consisting of two media of refractive indices n1 and n2 is placed in air as shown in the figure. A ray of light is incident from medium n1 to n2 at an angle θ, where sin θ is slightly larger than 1/n1. Take… Includes diagram2021 · Multiple correct
  • For a prism of prism angle θ = 60 ∘, the refractive indices of the left half and the right half are, respectively, n1 and n2 (n2 ≥ n1) as shown in the figure. The angle of incidence i is chosen such that the incident… Includes diagram2021 · Multiple correct
  • A large square container with thin transparent vertical walls and filled with water (refractive index 34​) is kept on a horizontal table. A student holds a thin straight wire vertically inside the water 12 cm from one of its… Includes diagram2020 · Numerical
  • A beaker of radius r is filled with water (refractive index 34​) up to a height H as shown in the figure on the left. The beaker is kept on a horizontal table rotating with angular speed ω. This makes the water surface… Includes diagram2020 · Multiple correct