Light – Reflection and Refraction

An object of 5 cm is placed at a distance of 20 cm in front of a convex mirror with a radius of curvature of 30 cm. Find the position, nature and size of the image.

Object distance (u) = – 20 cm Image distance (v) = ? Object height (h) = 5 cm Image height (h’) =? Radius of curvature (R) = 30 cm Radius of curvature = 2 × Focal length R = 2f f = 15 cm The positive value of image height indicates that the image formed …

An object of 5 cm is placed at a distance of 20 cm in front of a convex mirror with a radius of curvature of 30 cm. Find the position, nature and size of the image. Read More »

An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position and nature of the image.

Focal length of convex mirror (f) = +15 cm Object distance (u) = – 10 cm Image distance (v) =? According to the mirror formula, The image is virtual, erect and diminished. The image is located at a distance of 6 cm from the mirror on the other side of the mirror. The positive and …

An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position and nature of the image. Read More »

An object 5 cm in length is held 25 cm away from a converging lens of focal length 10 cm. Draw the ray diagram and find the position, size and nature of the image formed.

Height of the object,( h1 ) = 5 cm Height of the image,( h2 ) = ? Distance of the object from the converging lens,( u) = -25 cm Distance of the image from the converging lens,( v) =? Focal length of a converging lens,(f) = +10 cm Using the lens formula, Thus, the image …

An object 5 cm in length is held 25 cm away from a converging lens of focal length 10 cm. Draw the ray diagram and find the position, size and nature of the image formed. Read More »

One-half of a convex lens is covered with black paper. Will this lens produce a complete image of the object? Verify your answer experimentally. Explain your observations.

Yes, as shown in the image, it will produce a complete image of the object. By watching the images of a far-off object, such as a tree, on a screen when the lower half of the lens is covered with black paper, this can be verified experimentally. However, the image’s clarity or brightness will decrease.

Name the type of mirror used in the following situations.
(a) Headlights of a car
(b) Side/rear-view mirror of a vehicle
(c) Solar furnace
, Support your answer with a reason.

(a) Concave Mirror: When the light source is positioned at their main focus, concave mirrors can produce a powerful parallel beam of light. (b)Convex mirrors have the largest fields of view (b). (c) Concave mirror: Because it concentrates the sun’s parallel beams into a single point.

We wish to obtain an erect image of an object, using a concave mirror of focal length 15 cm. What should be the range of distance of the object from the mirror? What is the nature of the image? Is the image larger or smaller than the object? Draw a ray diagram to show the image formation in this case.

Range of the object’s distance from the mirror’s pole is 0 to 15 cm. The image is erect, virtual, and larger than the object.