Concepts Of Physics MCQ Edition [Volume 1]
- Exam
- Concepts Of Physics MCQ Edition [Volume 1]
- Subject
- Physics
- Chapter
- Geometrical Optics
Concepts Of Physics MCQ Edition [Volume 1] · Physics · Geometrical Optics
A point source of light is positioned in front of a plane mirror.
A point source of light is positioned in front of a plane mirror.
Options
- AOnly the reflected rays near the normal meet at a point when extended backward.
- BLight of various colours creates different images.
- CAll the reflected rays meet at a point when extended backward.
- DOnly the reflected rays making a small angle with the mirror meet at a point when extended backward.
Correct answer
C. All the reflected rays meet at a point when extended backward.
Step-by-step solution
According to the laws of reflection, for a plane mirror, the angle of incidence is equal to the angle of reflection for all light rays originating from a point source.
When these reflected rays are extended backward, they all intersect at a single point, which forms the virtual image of the point source.
This property holds true for all rays regardless of their angle of incidence or the wavelength of the light.
Therefore, all the reflected rays meet at a point when extended backward.
When these reflected rays are extended backward, they all intersect at a single point, which forms the virtual image of the point source.
This property holds true for all rays regardless of their angle of incidence or the wavelength of the light.
Therefore, all the reflected rays meet at a point when extended backward.