Refraction of Light at Plane Surfaces Physics - Refraction of Light at Plane Surfaces

A light ray is incident from a denser medium on the boundary separating it from a rarer mediuma an angle of incident equal to the critical angle, what is the angle of refraction for the ray?

How is the critical angle related to the refractive index of a medium?

State one advantage of using a total reflecting prism as a reflector in place of plane mirror.

How is the refractive index of a medium related to the real and apparent depths of an object in that medium?

How does the angle of minimum deviation produces by a prism change with increase in :
the refracting angle of prism?

State two conditions necessary for total internal reflection to occur.

What is total internal reflection?

The critical angle for glass-air is 45° for the light of yellow colour. State whether it will be less than, equal to, or more than 45° for (i) ref light, (ii) blue light?

Name two factors which affect the critical angle for a given pair of media. State how do the factors affect it.

What is meant by the statement the critical angle for diamond is 24°?

Draw diagram to illustrate the total internal reflection .

What device other than a plane mirror can be used to turn a ray of light through 180°? Draw a diagram in support of your answer. Name an instrument in which this device is used.

Two isosceles right –angles glass prisms are placed near each other as shown in Fig. 4.63. Complete the path of the light ray entering the first prism till it emerges out of the second prism.

Draw a neat labelled ray diagram to show the total internal reflection of a ray of light normally incident on one face of a 30°, 90°, 60° prism.

In given figure a ray of light PQ is incident normally on the face AB of an equilateral glass prism. Complete the ray diagram showing its emergence into air after passing through the prism.
(a) Write the angles of incidence at the faces AB and AC of the prism.
(b) name the phenomenon which the ray of light suffers at the face AB, AC and BC of the prism.

What is a total reflecting prism? State three actions that it can produce. Draw a diagram to show one action of the total reflecting prism.

Water in a pond appears to be only three–quarters of its actual depth. What property of light is responsible for this observation? Illustrate your answer with the help of a ray diagram. How is the refractive index of water calculated from its real and apparent depth?

If the angle of incidence is greater than the critical angle, light is not refracted at all, when it falls on the surface from a denser medium to a rarer medium.

The deviation produced by a prism is independent of the angle of incidence and is same for all the colours of light .

A total reflecting equilateral prism can be used to deviate a ray of light through : ________ .

A total reflecting right angled isosceles prism can be used to deviate a ray of light through ________ .

The critical angle for glass-air interface is : ________ .

An object in a denser medium when viewed from a rarer medium appears to be raised. The shift is maximum for : ________ .

A small air bubble in a glass block when seen from above appears to be raised because of : ________ .

critical angle is the angle of ________ In denser medium for which the angle of ________ in rarer medium is ________

Total internal reflection occurs only when a ray of light passes from a ________ medium to a ________Medium.

Angle of deviation is the angle which the ________ Ray makes with the direction of ________ ray.

The refractive index of glass with respect to air is 3/2. The refractive index of air with respect to glass will be ________ .

When light travels from a denser to a rarer medium, its speed ________ .