Home
Class 12
PHYSICS
A concave spherical surface of radius of...

A concave spherical surface of radius of curvature `10 cm` separates two mediums `X` and `Y` of refractive indices `4//3` and `3//2` respectively. Centre of curvature of the surfaces lies in the medium `X`. An object is placed in medium `X`.

A

Image is always real

B

Image is real if the object distance is greater than `90 cm`

C

Image is always virtual

D

Image is virtual only If the object distance is less than `90 cm`.

Text Solution

Verified by Experts

The correct Answer is:
C
Let there be two point objects `O_(1)` and `O_(2)`, Incident rays from `O_(1)` and `O_(2)` at point `P` shall both bend towards normal and hence the corresponding refracted rays shall intersect the principal axis in the left medium. Therefore image formed under given condition shall always be virtual.
.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • DAILY PRACTICE PROBLEM

    RESONANCE|Exercise DPP No.10|9 Videos

  • DAILY PRACTICE PROBLEM

    RESONANCE|Exercise DPP No.11|20 Videos

  • DAILY PRACTICE PROBLEM

    RESONANCE|Exercise DPP No.8|9 Videos

  • CURRENT ELECTRICITY

    RESONANCE|Exercise High Level Problems (HIP)|21 Videos

  • ELECTRO MAGNETIC WAVES

    RESONANCE|Exercise Exercise 3|27 Videos

Similar Questions

Explore conceptually related problems

A concave spherical surface of radius of curvature R = 20 cm separates two media A and B having refractive indices mu_(A) =(4)/(3) and mu_(B) =(3)/(2) respectively. A point object is placed on the principal axis. Find the distance of the object from the surface so that its image is virtual when (a) the object is in medium A. (b) the object is in medium B.

A concave spherical surface of radius of curvature 100 cm separates two media of refractive indices 1.50 and (4)/(3) . An object is kept in the first medium at a distance of 30 cm from the surface. Calculate the position of the image.

Knowledge Check

  • A concave spherical surface of radius of curvature 10 cm separates two medium x & y of refractive index 4/3 & 3/2 respectively. If the object is placed along principal axis in medium X then

    A
    image is always real
    B
    image is real if the object distance is greater than 90cm
    C
    image is always virtual
    D
    image is virtual if the object distance is less than 90 cm

  • A spherical convex surface separates object and image space of refractive index 1 and 4/3 respectively. If radius of curvature of the surface is 0.1 m, its power is

    A
    2.5D
    B
    -2.5 D
    C
    3.3D
    D
    -3.3D

  • A spherical convex surface separates object and image spaces of refractive indices 1.0 and 4//3 . If radius of curvature of the surface is 10cm, find its power.

    A
    3.4D
    B
    2.5D
    C
    25D
    D
    1.5D

    • Similar Questions

    Explore conceptually related problems

    A spherical surface of radius 30 cm separates two transparent media A and B with refractive indices 1'33 and 1.48 respectively. The medium A is on the convex side of the surface. Where should a point object be placed in medium A so that the paraxial rays become parallel after refraction at the surface ?

    A spherical surface of radius 30cm separates two transparent media A and B with refractive indiecs 1.33 and 1.48 , respectively. The medium A is on the convex side of the surface. Where should a point object the placed in medium A so that the paraxial rays become parallel after refraction at the surface?

    A convex surface of radius of curvature 40 cm separate two media of refractive indices (4)/(3) and 1.50. An object is kept in the first medium at a distance of 20 cm from the surface. Calculate the position of the image.

    (a) A point object is placed on the principal axis of a convex spherical surface of radius of curvature R, which separates the two media of refractive indices nx and n_(2)(n_(2) gt n_(1)) Draw the ray diagram and deduce the relation between the object distance (w), image distance (v) and the radius of curvature (R) for refraction to take place at the convex spherical surface from rarer to denser medium. (b) A converging lens has a focal length of 20 cm in air. It is made of a material of refractive index 1.6. If it is immersed in a liquid of refractive index 1.3, find its new focal length.

    A convex refracting surface of radius of curvature 20 cm separates two media of refractive indices 4//3 and 1.60 . An object is placed in the first medium (mu = 4//3) at a distance of 200 cm from the refracting surface. Calculate the position of image formed.

    Home
    Profile