An object moves in front of a fixed plane mirror. The velocity of the ...
When object moves normal to the mirror, image velocity will be opposite to it. when object moves parallel to the mirror, image velocity will be in the same direction.
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An object moves in front of a fixed plane mirror. The velocity of the ...
The velocity of the image of the object
The velocity of the image of an object formed by a plane mirror can be determined by considering the properties of reflection. When an object moves in front of a fixed plane mirror, the image is formed due to the reflection of light rays from the object. The image appears to be behind the mirror and is of the same size as the object.
Explanation:
When an object moves in front of a mirror, each point on the object emits light rays in different directions. These light rays strike the mirror and are reflected according to the laws of reflection. The reflected rays appear to come from behind the mirror, creating the image.
Law of Reflection:
The law of reflection states that the angle of incidence is equal to the angle of reflection. This means that the light rays that strike the mirror at a certain angle will be reflected at the same angle but in the opposite direction.
Velocity of the Image:
Based on the properties of reflection, we can determine the velocity of the image of the object as follows:
1. Equal in magnitude: The magnitude of the velocity of the image will be equal to the magnitude of the velocity of the object. This is because the image is formed by the reflection of light rays from the object, and the speed of light is constant.
2. Makes any angle with that of the object depending on the direction of motion: The direction of the image's velocity can be any angle with that of the object's velocity, depending on the direction of motion. This is because the angle of reflection can vary depending on the angle of incidence.
When the object moves perpendicular to the mirror, the image's velocity will be parallel to the object's velocity. When the object moves at an angle to the mirror, the image's velocity will be at a different angle to the object's velocity.
Therefore, the correct answer is option 'D' - The velocity of the image of the object is equal in magnitude and makes any angle with that of the object depending on the direction of motion of the object.
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