मराठी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान इयत्ता ११

A Point Source of Light is Placed in Front of a Plane Mirror. - Physics

Advertisements
Advertisements

प्रश्न

A point source of light is placed in front of a plane mirror.

पर्याय

  • All the reflected rays meet at a point when produced backward.

  •  Only the reflected rays close to the normal meet at a point when produced backward.

  •  Only the reflected rays making a small angle with the mirror meet at a point when produced backward.

  • Light of different colours make different images.

MCQ
Advertisements

उत्तर

All the reflected rays meet at a point when produced backward.

Here, the angle of reflection is equal to the angle of incidence. Therefore, all rays get reflected to converge at a single point to form the point image of the point source.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 18: Geometrical Optics - MCQ [पृष्ठ ४१०]

APPEARS IN

एचसी वर्मा Concepts of Physics Vol. 1 [English] Class 11 and 12
पाठ 18 Geometrical Optics
MCQ | Q 1 | पृष्ठ ४१०

संबंधित प्रश्‍न

Use the mirror equation to show that a convex mirror always produces a virtual image independent of the location of the object.


Use the mirror equation to deduce that an object placed between the pole and focus of a concave mirror produces a virtual and enlarged image.


A point object O is placed at a distance of 15cm from a convex lens L of focal length 1 Ocm as shown in Figure 5 below. On the other side of the lens, a convex mirror M is placed such that its distance from the lens is equal to the focal length of the lens. The final image formed by this combination is observed to coincide with the object O. Find the focal length of the convex mirror


Use the mirror equation to show that an object placed between f and 2f of a concave mirror forms an image beyond 2f.


Can a plane mirror ever form a real image?


Mark the correct options.


Which of the following (referred to a spherical mirror) do (does) not depend on whether the rays are paraxial or not?
(a) Pole
(b) Focus
(c) Radius of curvature
(d) Principal axis


A cylindrical vessel of diameter 12 cm contains 800π cm3 of water. A cylindrical glass piece of diameter 8.0 cm and height 8.0 cm is placed in the vessel. If the bottom of the vessel under the glass piece is seen by the paraxial rays (see figure), locate its image. The index of refraction of glass is 1.50 and that of water is 1.33.


A small object is placed at the centre of the bottom of a cylindrical vessel of radius 3 cm and height 4 cm filled completely with water. Consider the ray leaving the vessel through a corner. Suppose this ray and the ray along the axis of the vessel are used to trace the image. Find the apparent depth of the image and the ratio of real depth to the apparent depth under the assumptions taken. Refractive index of water = 1.33.


A light ray is incident normally on the face AB of a right-angled prism ABC (μ = 1.50) as shown in figure. What is the largest angle ϕ for which the light ray is totally reflected at the surface AC?


A light ray, going through a prism with the angle of prism 60°, is found to deviate by 30°. What limit on the refractive index can be put from these data?


A point object is placed at a distance of 20 cm from a thin plano-convex lens of focal length 15 cm, if the plane surface is silvered. The image will form at:


A parallel beam of light is allowed to fall on a transparent spherical globe of diameter 30cm and refractive index 1.5. The distance from the centre of the globe at which the beam of light can converge is ______ mm.


The focal length f is related to the radius of curvature r of the spherical convex mirror by ______.


An upright object is placed at a distance of 40 cm in front of a convergent lens of a focal length of 20 cm. A convergent mirror of focal length 10 cm is placed at a distance of 60 cm on the other side of the lens. The position and size of the final image will be ______.


A point object is placed at a distance of 30 cm from a convex mirror of a focal length of 30 cm. What is the separation between the image and the object?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×