If an incident ray making an angle 30𝑜30 o with the horizontal strikes an incline reflecting plane, the reflected ray makes an angle of 15𝑜15 o with the normal of the reflecting surface, what is the angle of reflection with normal if a horizontally parallel rays strikes at the same point.30𝑜30 o 45𝑜45 o 60𝑜60 o 90𝑜90 o
Question
If an incident ray making an angle 30𝑜30 o with the horizontal strikes an incline reflecting plane, the reflected ray makes an angle of 15𝑜15 o with the normal of the reflecting surface, what is the angle of reflection with normal if a horizontally parallel rays strikes at the same point.30𝑜30 o 45𝑜45 o 60𝑜60 o 90𝑜90 o
Solution
The question seems to be a bit jumbled, but I'll try to answer it based on my understanding.
First, let's clarify some terms:
- Incident ray: The ray of light that strikes a surface.
- Reflected ray: The ray of light that bounces off the surface.
- Normal: A line perpendicular to the surface at the point of incidence.
- Angle of incidence: The angle between the incident ray and the normal.
- Angle of reflection: The angle between the reflected ray and the normal.
According to the law of reflection, the angle of incidence is equal to the angle of reflection.
In the first scenario, the incident ray makes an angle of 30 degrees with the horizontal. This means the angle of incidence is 60 degrees (since the normal is perpendicular to the horizontal). The reflected ray makes an angle of 15 degrees with the normal, which contradicts the law of reflection. There might be a mistake in the question.
In the second scenario, if a horizontally parallel ray strikes the same point, the angle of incidence would be 90 degrees (since the ray is parallel to the horizontal and the normal is perpendicular to the horizontal). According to the law of reflection, the angle of reflection would also be 90 degrees.
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