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Can a Plane Mirror Ever Form a Real Image? - Physics

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प्रश्न

Can a plane mirror ever form a real image?

टीपा लिहा

उत्तर

No, a plane mirror can never form a real image. This is because in all possible situations of image formation, the light rays never actually meet after getting reflected, but they only appear to meet behind the mirror, forming a virtual image always.

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पाठ 18: Geometrical Optics - Short Answers [पृष्ठ ४१०]

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एचसी वर्मा Concepts of Physics Vol. 1 [English] Class 11 and 12
पाठ 18 Geometrical Optics
Short Answers | Q 5 | पृष्ठ ४१०

संबंधित प्रश्‍न

Calculate the distance of an object of height h from a concave mirror of radius of curvature 20 cm, so as to obtain a real image of magnification 2. Find the location of the image also.


Use the mirror equation to deduce that the virtual image produced by a convex mirror is always diminished in size and is located between the focus and the pole.


Using mirror formula, explain why does a convex mirror always produce a virtual 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.


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


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


The rays of different colours fail to converge at a point after going through a converging lens. This defect is called


A light ray falling at an angle of 45° with the surface of a clean slab of ice of thickness 1.00 m is refracted into it at an angle of 30°. Calculate the time taken by the light rays to cross the slab. Speed of light in vacuum = 3 × 108 m s−1.


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 light ray is incident at an angle of 45° with the normal to a √2 cm thick plate (μ = 2.0). Find the shift in the path of the light as it emerges out from the plate.


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?


Find the angle of deviation suffered by the light ray shown in figure. The refractive index μ = 1.5 for the prism material.


Name the physical principle on which the working of optical fibers is based.


The figure below shows the positions of a point object O, two lenses, a plane mirror and the final image I which coincides with the object. The focal length of the convex lens is 20 cm. Calculate the focal length of the concave lens.


For paraxial rays, show that the focal length of a spherical mirror is one-half of its radius of curvature.


A convex lens of focal length 15 cm is placed coaxially in front of a convex mirror. The lens is 5 cm from the pole of the mirror. When an object is placed on the axis at a distance of 20 cm from the lens, it is found that the image coincides with the object. Calculate the radius of curvature of the mirror - (consider all-optical event): 


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