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प्रश्न
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
What will be the focal length of this mirror?
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उत्तर
संबंधित प्रश्न
We can obtain an enlarged and erect image by a convex mirror.
A concave mirror always forms a real image.
Define the Focal length of a spherical mirror
What happens when a ray of light falls normally (or perpendiculary) on the surface of a plane mirror?
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.
Why is a hole burnt in the carbon paper?
How is a spherical mirror used to converge a beam of light at a point? Name the type of mirror used.
If a spherical mirror breaks, what type of mirrors are the individual pieces?
State the number of images of an object placed between two mirrors, formed in each case when mirrors are inclined to each other at (a) 90°, and (b) 60°.
Draw a ray diagram to show the formation of image by a concave mirror for an object placed between its pole and focus. State three characteristics of the image.
State the position of object for which the image formed by a concave mirror is of same size.
A straight stick partly dipped in water obliquely appears to be bent at the surface of the water.
Answer the following question.
Write the modification in the curvature of the eye lens which enables us to see the nearby objects clearly?
Define the following term:
convex mirror
A concave mirror can be used to produce a parallel beam of light. Draw a ray to illustrate this.
A converging lens of focal length f is placed at a distance 0.3 m from an object to produce an image on a screen 0.9 m from the lens. With the object and the screen in the same positions, an image of the object could also be produced on the screen by placing a converging lens of focal length.
