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Question
1. What are the uses of concave and convex mirrors show me the diagram with diagram.
2. Describe the properties when image is formed by the concave and convex mirror.
3. What is reflection and refraction of light explain with their laws.
4. What are Criterion signs convections used in spherical Mirrors.
2. Describe the properties when image is formed by the concave and convex mirror.
3. What is reflection and refraction of light explain with their laws.
4. What are Criterion signs convections used in spherical Mirrors.
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Solution
Dear student,
3-
Refraction of light is the bending of a light ray when it enters one medium from another (these media should have different refractive indices). When light enters an optically denser medium, the ray bends towards the normal (the perpendicular at that surface) and when it enters an optically rarer, it bends away from the normal. Optical density is compared on basis of refractive indices. In any medium other than vacuum, the speed of light is less than c. The ratio of speed of light in vacuum to the speed of light in medium is the refractive index of the medium.
Law of refraction-
1-The incident ray the refracted ray and the normal to the interface of two transparent media at the point of incidence all lie in the same plane
2- The ratio of sin of angle of incident to the sine of angle refraction is a constant for the light of given colour and for the given pair of media This law is also known as Snells law of refraction sin i/sin r = a constant.
Reflection- When light falls on a surface, the direction of the ray is changed. This change in direction is known as reflection of light. The reflected light travels to the same medium it came from. At the point of reflection, angle of incidence and angle of reflection are always equal. This is known as law of reflection.
Law of reflection-
The 1st law of reflection states that the angle of incidence is equal to the angle of reflection. Angle of incidence is the angle made by the incident ray with the normal. The reflected ray is the angle made by the reflected ray with the normal. Thus, Angle of incidence, i =Angle of reflection, r
The 2nd law of reflection states that: The incident ray, the reflected ray and the normal to the reflecting surface are coplanar. By coplanar it is meant that they lie on the same plane.
Post other query in different thread.
Regards
3-
Refraction of light is the bending of a light ray when it enters one medium from another (these media should have different refractive indices). When light enters an optically denser medium, the ray bends towards the normal (the perpendicular at that surface) and when it enters an optically rarer, it bends away from the normal. Optical density is compared on basis of refractive indices. In any medium other than vacuum, the speed of light is less than c. The ratio of speed of light in vacuum to the speed of light in medium is the refractive index of the medium.
Law of refraction-
1-The incident ray the refracted ray and the normal to the interface of two transparent media at the point of incidence all lie in the same plane
2- The ratio of sin of angle of incident to the sine of angle refraction is a constant for the light of given colour and for the given pair of media This law is also known as Snells law of refraction sin i/sin r = a constant.
Reflection- When light falls on a surface, the direction of the ray is changed. This change in direction is known as reflection of light. The reflected light travels to the same medium it came from. At the point of reflection, angle of incidence and angle of reflection are always equal. This is known as law of reflection.
Law of reflection-
The 1st law of reflection states that the angle of incidence is equal to the angle of reflection. Angle of incidence is the angle made by the incident ray with the normal. The reflected ray is the angle made by the reflected ray with the normal. Thus, Angle of incidence, i =Angle of reflection, r
The 2nd law of reflection states that: The incident ray, the reflected ray and the normal to the reflecting surface are coplanar. By coplanar it is meant that they lie on the same plane.
Post other query in different thread.
Regards
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