Question

The index of refraction is the ratio of the speed of light in a vacuum to the speed of light in a medium - leads one to conclude . . .

Question 6 options:

	It can never have a numerical value greater than 1
	It can have a numerical value greater or equal to 1
	It can have numerical values both positive or negative
	None of the above If a laser beam in incident on a translucent block at a certain angle, we expect the angle same laser beam exiting the block to be . . . Question 1 options: Different than the incident angle Greater than incident angle Less than the incident angle Equal to the incident angle When a laser beam of light enters a material with a higher index of refraction at a certain incident angle with respect to the normal, we expect the refracted beam to be bent . . . Question 3 options: Toward the normal with an angle less than the incident angle Away from the normal with an angle less than the incident angle Toward the normal with an angle greater than the incident angle Away from the normal with an angle greater than the incident angle

Answer 1

1)we know that the speed of light is maximum in vaccume. So the ration of speed of light in vaccume and spees of light in a medium will always have a numerical value greater than or equal to one.

it can have a numerical value greater than or equal to one.

2)we know that when a light ray passes through a translucent rectangular block then the emergent ray is always parallel to incident ray so emergent angle will be

equal to the incident angle.

3)As the second medium has higher value of refractive index(denser medium) so the speed of light in second medium will be less and it will bend towards the normal.

towards the normal with an angle less than the incident angle.