Advertisements
Advertisements
प्रश्न
An object 5 cm high is placed at a distance 60 cm in front of a concave mirror of focal length 10 cm. Find the position and size of the image.
Advertisements
उत्तर
The position of the object is 12 cm in front of the mirror.
Its size is 1 cm.
APPEARS IN
संबंधित प्रश्न
When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper.
What name is given to the distance between spherical mirror and carbon paper?
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.
The letters on the front of an ambulance are written laterally inverted like 
. Give reason.
What type of mirror can be used to obtain a real image of an object?
Upto what maximum distance from the pole the image in a convex mirror can be obtained? what will be the location of object then ?
The following Figure shows a concave mirror MM' on which a ray of light incident from a point P gets reflected to meet the principle axis at O.
(a) Find, by construction, the position of the centre of curvature of the concave mirror.
(b) Write down the value for the radius of curvature of the mirror.
(c) Calculate the focal length of the mirror.
(d ) Which relation is used in deducing the focal length from the radius of curvature?
In torches, search lights and headlights of vehicles the bulb is placed ______.
What is “aperture”?
