Refraction at Planar Surface

Q.

What is endoscopy? Which principle in optics is made use of in endoscopy?

Q.

Critical angle is the angle of incidence for which the angle of refraction is -

Q. Refractive Index of a medium = $\frac{Realdepth}{Apparentdepth}$

1. True
2. False

Q.

When light is incident on the surface of medium at angle $i$ and refracted into a second medium at an angle $r$ the graph of $sini$ vs $sinr$ is as shown in the graph. From this, one can conclude that

1. Velocity of light in the medium II is 1.73 times the velocity of light in the I medium

2. Medium II is optically denser than medium I

3. $sin{i}_c=\frac{1}{2}$

4. Velocity of light in the I medium is 1.73 times the velocity in the II medium

Q. Read the given statements and select the correct option.
Statement 1: When a ray of light passes from air into water, it will bent towards the normal.
Statement 2: When light travels from air into water, its speed increases.

1. Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
2. Both statements 1 and 2 are true and statement 2 is not the correct explanation of statement 1.
3. Statement 1 is true but statement 2 is false.
4. Statement 1 is false but statement 2 is true.

Q.

When light is incident on the surface of medium at angle $i$ and refracted into a second medium at an angle $r$ the graph of $sini$ vs $sinr$ is as shown in the graph. From this, one can conclude that

1. $sin{i}_c=\frac{1}{2}$

2. Medium II is optically denser than medium I

3. Velocity of light in the I medium is 1.73 times the velocity in the II medium

4. Velocity of light in the medium II is 1.73 times the velocity of light in the I medium