Explanation
Image formed by convex mirror is virtual for real object placed anywhere.
The image formed by a convex mirror is always virtual.
Focal length of the mirror remains unchanged.
Virtual image is seen on the photograph.
Convergence (or power) is independent of medium for mirror.
Virtual image formed is larger in size in case of concave mirror.
As laws of reflection to be for all points of the remaining part of the mirror, the image will be that of the whole object. However, as the area of the reflecting surface has been reduced, the intensity of the image will reduce (in this case half).
Velocity and wavelength change but frequency remains same.
Ray optics is valid when size of the objects is much larger than the order of wavelength of light.
Frequency does not change with medium but wavelength kind velocity decrease with the increase in refractive index.
Objects are invisible in liquid of R.I. equal to that of object.
When light ray travels from denser to rarer, it deviates away from the normal.
Frequency remain unchanged
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