CBSE Class 7 Answered
STATE THE LAWS OF REFLECTION.SHOW THAT INCIDENT RAY,REFLECTED RAY AND THE NORMAL,AT THE POINT OF INCIDENCE,ALL LIE IN SAME PLANE.DEFINE PRICIPAL AXIS,POLE,FOCUS.
Asked by Abhinav | 09 Nov, 2016, 08:26: PM
Expert Answer
The law of reflection states:
- The angle of incidence equals the angle of reflection.
- The incident beam, the replicate beam and the normal beam, all lie in the equal plane.
Definitions:
The horizontal line passing through the centre of curvature and the pole of the spherical mirror is known as the principal axis.
The centre of the reflecting surface of a spherical mirror is a point called the pole.
The point at which a number of parallel rays intersect on the principal axis after reflecting from the mirror is called the principal focus. It is represented by F.
For the acticity kindly refer the following link:
http://epathshala.nic.in/e-pathshala-4/flipbook/
Kindly refer Chp. 16: Light _ Activity 16.2
Following is the printshot:
Answered by Yashvanti Jain | 10 Nov, 2016, 10:58: AM
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