Speed of light in a given medium is the indicator of its________.

• Refractive index

• Optical density

• Dispersion

• None of these

What is the relation between refractive index and the optical density?

• More refractive index more is the density.

• More refractive index less is the density

• Less refractive index more is the density

• No relation between refractive index and optical density

The ratios of the speeds of light in a given pair of media gives us________.

• Absolute refractive index

• Relative refractive index

• Optical density

• None of these

How the pond appears to be, when it is seen from outside?

• Seems Deeper

• Seems shallower

• Seems very deep

• No change is there

What is the relation between angle of incidence and angle of refraction when light goes from optically rarer to denser

• Angle I is equal to angle r

• Angle I is greater than angle r

• Angle I is less than angle r

• No relation between these angles

What we call the final ray coming out of the glass slab?

• Incident ray

• Refracted Ray

• Reflected ray

• Emergent Ray

Tags

NGSS.MS-PS4-2

Prisms usually have___________ faces.

• Square

• Triangular

• Rectangular

• Circular

How many colours does the white light consist of?

• 5

• 6

• 7

• 8

Dispersion of light referred to as________.

• Bending of light

• Splitting of light in seven colours

• Splitting of light in primary colours

• Bouncing back of light

What is the reason of splitting of white light?

• Change of speed of all colours

• Breaking down of colours

• Falling obliquely on the surface

• Falling on the normal of the surface