Advertisements
Advertisements
प्रश्न
The mirror used by the ophthalmologist to examine the eye is _______.
Advertisements
उत्तर
The mirror used by the ophthalmologist to examine the eye is Concave mirror.
APPEARS IN
संबंधित प्रश्न
Draw ray diagrams to show the principal focus of a convex mirror.
An object 4 cm in height, is placed at 15 cm in front of a concave mirror of focal length 10 cm. At what distance from the mirror should a screen be placed to obtain a sharp image of the object. Calculate the height of the image.
The image of a candle flame placed at a distance of 30 cm from a mirror is formed on a screen placed in front of the mirror at a distance of 60 cm from its pole. What is the nature of the mirror? Find its focal length. If the height of the flame is 2.4 cm, find the height of its image. State whether the image formed is erect or inverted.
A communications satellite in orbit sends a parallel beam of signals down to earth. If these signals obey the same laws of reflection as light and are to be focussed onto a small receiving aerial, what should be the best shape of the metal 'dish' used to collect them?
Which type of mirror is used in a solar furnace? Support your answer with reason.
Name the type of mirror used by dentists. How does it help?
If an object of 10 cm height is placed at a distance of 36 cm from a concave mirror of focal length 12 cm, find the position, nature and height of the image.
Draw a ray diagram to show the formation of image of an object placed on the principal axis of a convex mirror. State the position, size and nature of the image. What happens to the image as the object is moved away from the mirror?
A child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size and that of the legs smaller. The following is the order of combinations for the magic mirror from the top.
The focal length of a concave mirror is 5cm. Its radius of curvature is ______.
