Advertisements
Advertisements
प्रश्न
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
Which type of spherical mirror will it provide?
Advertisements
उत्तर
Since the outer surface is shiny, it will form a convex mirror.
APPEARS IN
संबंधित प्रश्न
An image formed by a ______ mirror is always of the same size as that of the object.
Define the Focal length of a spherical mirror
Name the spherical mirror which can produce a real and diminished image of an object.
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.
Complete the following diagrams shown in Fig. by drawing the reflected ray for each of the incident ray A and B.
Figure shows a concave mirror with its pole at P, focus F and centre of curvature C. Draw ray diagram to show the formation of image of an object OA.
Name the mirror which always produces an erect and virtual image. How is the size of image related to the size of object?
State two uses of a concave mirror.
Answer the following question.
Write the modification in the curvature of the eye lens which enables us to see the nearby objects clearly?
An object 5 cm high forms a virtual image of 1.25 cm high, when placed in front of a convex mirror at a distance of 24 cm. Calculate:
- the position of the image
- the focal length of the convex mirror.
Find the height of the image of a body of height 1.5m in a mirror with a magnification of 1.5.
The following figure shows a concave mirror with its pole (P), focus (F), and center of curvature (C). Draw a ray diagram to show the formation of the image of an object AB by the concave mirror.
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?
An object is placed at a distance of 0.25 m
in front of a plane mirror. The distance between the object and image will be ______.
A shopkeeper wanted to fix a mirror which will give a maximum view of his shop. What type of mirror should he use? Give reason.
