Advertisements
Advertisements
प्रश्न
Find out the letters of English alphabet or any other language known to you in which the image formed in a plane mirror appears exactly like the letter itself. Discuss your findings.
Advertisements
उत्तर १
If English letters like A, H, I, M, O, T, U, V, W, X and Y are placed in front of a mirror, then their images look exactly like the letters. These letters are vertically symmetrical. If we divide these letters from the middle, then their right and left parts will look the same.
उत्तर २
The letters of the English alphabet give exactly the same image in a plane mirror like the letter itself:
A, H, I, M, O, T, U, V, W, X, Y
APPEARS IN
संबंधित प्रश्न
A student obtains a sharp image of the distant window (W) of the school laboratory on the screen (S) using the given concave mirror (M) to determine its focal length. Which of the following distances should he measure to get the focal length of the mirror?
Explain the following term related to spherical lenses:- centres of curvature
Name the spherical mirror which has:
(a) virtual principal focus.
(b) real principal focus.
A lens forms a real image 3 cm high of an object 1 cm high. If the separation of object and image is 15 cm, find the focal length of the lens.
A small object is placed 150 mm away from a diverging lens of focal length 100 mm.
(i) Copy the figure below and draw rays to show how an image is formed by the lens.
Figure
(ii) Calculate the distance of the image from the lens by using the lens formula.
What is meant by magnification? Write its expression. What is its sign for the (a) real (b) virtual, image?
State the kind of mirror used
(a) By a dentist,
(b) As a search-light reflector.
Complete the following diagrams shown in the following figures by drawing the reflected rays.
