photo.jpg

## Let Us Revise The angle between the incident ray is known as the angle of reflection. After striking a shiny surface, a ray of light have light from the sun. You can create shadows using a cylinder. The size of the image formed by the plane mirror is same as the size of the object. ## Activity 1...

## Let Us Revise The angle between the incident ray is known as the angle of reflection. After striking a shiny surface, a ray of light have light from the sun. You can create shadows using a cylinder. The size of the image formed by the plane mirror is same as the size of the object. ## Activity 16.5 To observe spherical mirrors using a stainless steel spoon Material: A stainless steel spoon | Type of Mirror | Real/Virtual | Upright/Inverted | Size | |---|---|---|---| | Plane Mirror | Virtual | Upright | Image size is same as the size of an object | | Concave Mirror | Image is real except when the object is very near to the mirror | Image inverted when real and upright when the image is virtual | Enlarged at some positions and diminished at others | | Convex Mirror | Virtual | Upright | Diminished | Method: 1. Take a stainless steel spoon. 2. Look into the outer side of the spoon by bringing your face close to it. Observe the image. 3. Now turn the spoon over and look at your image using the inner side of the spoon. Increase the distance of the spoon from your face. What do you see? Observation and conclusion: The outer side of the spoon makes the object (your face) appear further away. The size of the image is diminished and the image is upright. The inner side of the spoon makes the face look larger. Your face may appear upside down or inverted. The curved shiny surface of a spoon acts as a mirror. A spherical mirror is a common curved mirror. Curved mirrors can be of two types depending on the kind of surface they have - concave and convex. The outer side of the spoon acts as a convex mirror while the inner part of the spoon acts as a concave mirror. According to the positions of the objects, the nature and the size of the image change in concave and convex mirrors.