Advertisements
Advertisements
प्रश्न
A ray of light strikes a plane mirror at an angle of 40° to the mirror surface. What will be the angle of reflection?
Advertisements
उत्तर
he angle of reflection is 500, in accordance with the first law of reflection, which states that the angle of incidence is equal to the angle of reflection.
Here, the angle of incidence = 90o - 40o = 50o( the angle of incidence is the angle between the incident ray and the normal).
APPEARS IN
संबंधित प्रश्न
A student used a device (X) to obtain/focus the image of a well illuminated distant building on a screen (S) as shown below in the diagram. Select the correct statement about the device (X).
Image formed by a convex ______ is always virtual and smaller in size.
A virtual image larger than the object can be produced by a ______.
Mention the types of mirrors used as (i) rear view mirrors, (ii) shaving mirrors. List two reasons to justify your answers in each case.
Explain the meaning of the terms focus and focal length in case of a convex mirror, with the help of suitable ray diagram.
Complete the following diagrams in Figure by drawing the reflected rays for the incident rays 1 and 2.
State two uses of a concave mirror.
Upto what maximum distance from a concave mirror, the image can be obtained? What will be the location of object for it?
A concave mirror forms a virtual image of size twice that of the object placed at a distance 5 cm from it.
Find : (a) the focal length of the mirror (b) position of image
At what distance from a concave mirror of focal length 25 cm should an object be placed so that the size of image is equal to the size of the object.
An object forms a virtual image which is 1/8th of the size of the object. If the object is placed at a distance of 40 cm from the convex mirror, calculate:
- the position of the image
- the focal length of the convex mirror.
Define the following term:
convex mirror
Define the following term in relation to concave mirror.
Radius of curvature
Define the term Principle focus.
Which of the following has curved reflecting surface?
In torches, search lights and headlights of vehicles the bulb is placed ______.
A student traces the path of a ray of light passing through a rectangular slab.
 |
 |
 |
 |
For measuring the angle of incidence, he must position the protractor in the manner shown in the figure:
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.
For a spherical mirror, ______ is true.
The image formed in a plane mirror is always inverted.
