a person working in salon is given a plane mirror, a concave mirror and a convex mirror, which mirror will he give his customer to check if the shaving is done properly or not? Why?
Answers
He will give the person concave mirror
Explanation:
Concave mirror will give a large face of the person
Answer:
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Explanation:
Guidelines for Rays Falling on the Concave and Convex Mirrors
When a ray strikes concave or convex mirrors obliquely at its pole, it is reflected obliquely.
When a ray, parallel to principal axis strikes concave or convex mirrors, the reflected ray passes through the focus on the principal axis.
When a ray, passing through focus strikes concave or convex mirrors, the reflected ray will pass parallel to the principal axis.
A ray passing through the center of curvature of the spherical mirror will retrace its path after reflection.
Image Formation By Concave Mirror
By changing the position of the object from the concave mirror, different types of images can be formed. Different types of images are formed when the object is placed:
At the infinity
Beyond the center of curvature
At the center of curvature
Between the center of curvature and principal focus
At the principal focus
Between the principal focus and pole
Concave Mirror Ray Diagram
When an object is placed at infinity, a real image is formed at the focus. The size of the image is much smaller than compared to that of the object.
When an object the is placed at infinity
When an object is placed behind the center of curvature, a real image is formed between the center of curvature and focus. The size of the image is smaller than compared to that of the object.
When an object is placed behind the center of curvature
When an object is placed at the center of curvature and focus, the real image is formed at the center of curvature. The size of the image is the same as compared to that of the object.
When an object is placed at the center of curvature and focus
When an object is placed in between the center of curvature and focus, the real image is formed behind the center of curvature. The size of the image is smaller than compared to that of the object.
When an object is placed in between the center of curvature and focus
When an object is placed at the focus, the real image is formed at infinity. The size of the image is much larger than compared to that of the object.
When an object is placed at the focus
When an object is placed in between focus and pole, a virtual and erect image is formed. The size of the image is larger than compared to that of the object.
When an object is placed in between focus and pole
Summary
S. No Position of Object Position of Image Size of Image Nature of Image
1 At infinity At the focus F Highly Diminished Real and Inverted
2 Beyond the center of curvature C Between F and C Diminished Real and Inverted
3 At the center of curvature C At C Same Size Real and Inverted
4 Between C and F Beyond C Enlarged Real and Inverted
5 At focus F At Infinity Highly Enlarged Real and InvertedSwipe left
Image Formation By Convex Mirror
The image formed in a convex mirror is always virtual and erect, whatever be the position of the object. In this section, let us look at the types of images formed by a convex mirror.
When an object is placed at infinity, a virtual image is formed at the focus. The size of the image is much smaller than compared to that of the object.
Image Formation By Convex Mirror
When an object is placed at a finite distance from the mirror, a virtual image is formed between the pole and the focus of the convex mirror. The size of the image is smaller than compared to that of the object.
Image Formation By Convex Mirror
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Summary
S. No Position Of Object Position of Image Size of Image Nature of Image
1 At Infinity At the focus F, behind the mirror Highly diminished Virtual and Erect
2 Between Infinity and the Pole Between P and F, behind the mirror Diminished Virtual and Erect