Correct the following sentences if required:
Mirrage is observed due to total internal reflection.

Correct the following sentences if required: All real images are inverted.

Correct the following sentences if required: The images formed due to reflection from a spherical (concave/ convex) mirror are laterally inverted.

Correct the following sentences if required: The reflected ray is found to rotate through an angle of 60^@ . Then the plane mirror must have rotated through 120^@ .

Correct the following sentences if required: A plane mirror is a better reflector than a right angled prism.

Explain what is total internal reflection.

Correct the following sentences if required: The power of a lens is numerically equal to its focal length.

Correct the following sentences if required: mu = sin C where mu = refractive index, C = critical angle

Correct the following sentences, if required changing the underlined portion. The refractive index of a medium depends on the angle of the minimum deviation.

Correct the following sentences, if required changing the underlined portion. The refractive index of different colours of light varies directly with their wavelength.

Correct the following sentences, if required changing the underlined portion. The refractive index of a medium depends on the angle of the prism.