Table of Contents
- 1 When a mirror is rotated by 20 degree by what angle reflected ray rotates?
- 2 What is the angle of reflection of 20 degrees?
- 3 When mirror is rotated by an angle?
- 4 When a plane mirror is rotated through an angle the reflected ray turns through an angle then the size of the image is?
- 5 Which surface of a plane mirror reflects most of the light incident on it?
- 6 What is the focal length of a plane mirror?
When a mirror is rotated by 20 degree by what angle reflected ray rotates?
On rotating a mirror through an angle of 20°, the reflected ray is found to get deviated through an angle Ans : 40°.
What is the angle of reflection of 20 degrees?
The angle of reflection=25.
When the incident ray and the plane mirror both are rotated by 10 clockwise the reflected ray will rotate by?
ZERO degrees
Answer Submitted (ii) When the mirror is rotated clockwise, angle of incidence increases by 10 and thus angle of reflection will move clockwise(+10). Hence, after combining both results (-10+10 = 0), reflected ray will rotate by ZERO degrees.
What will be the angle through which reflected ray will rotate if the incident ray is kept fixed and mirror is rotated though an angle α?
Answer: Angle of refraction will rotates 2 theta .
When mirror is rotated by an angle?
Thus, for a fixed incident ray, the reflection angle is twice the angle through which the mirror has rotated. When a plane mirror is rotated at an angle $\theta$, the reflected ray rotates through the angle $2\theta$. However, the size of the image remains unchanged only position shifts.
When a plane mirror is rotated through an angle the reflected ray turns through an angle then the size of the image is?
When a plane mirror is rotated through an angle theta then the reflected ray turns through the angle 2 theta then the size of the image. Becomes infinite.
When the angle between if the plane mirror and the incident ray is 20 what is the angle of reflection?
Explanation : It is given that an incident ray strikes a plane mirror at an angle of 20 degrees with the mirror. We know that the angle between the normal and the surface of the mirror is 90. So, the angle between the incident ray and the normal will be 70.
Is the angle between the plane mirror and the incident ray is 20 degree the angle of reflection is?
Angle of reflection = 50. Hint Angle of incidence is the angle made by the incident ray with the normal of the surface.
Which surface of a plane mirror reflects most of the light incident on it?
silvered surface
Plane mirror has a flat surface which is reflecting. Plane mirror produces a virtual and erect image on the opposite side of the plane. Now a silvered surface is used in a mirror because silver is one of the metal which reflects the most light which is incident on it.
What is the focal length of a plane mirror?
infinity
However the focal length of a plane mirror is infinity; its optical power is zero.
When the angle between two plane mirrors is 30 degree how many images will be formed by the mirrors?
∴ There will be 11 images formed when two mirrors are placed at an angle of 30°.
When a plane mirror is rotated through an angle θ the reflected ray turns through the angle 2θ?
When a plane mirror is rotated through an angle θ then the reflected ray turns through the angle 2θ then the size of the image. Remains the same. Is doubled.