English

Light of a single colour is passed through a liquid having a piece of glass suspended in it. On changing the temperature of liquid, at a particular temperature the glass piece is not seen. - Physics

Advertisements
Advertisements

Question

Light of a single colour is passed through a liquid having a piece of glass suspended in it. On changing the temperature of liquid, at a particular temperature the glass piece is not seen. When is the glass piece not seen?

One Line Answer
Advertisements

Solution

The glass piece is not seen when the refractive index of liquid becomes equal to the refractive index of glass.

shaalaa.com
  Is there an error in this question or solution?
Chapter 4: Refraction of Light at Plane Surfaces - EXERCISE - 4 (A) [Page 81]

APPEARS IN

Selina Physics [English] Class 10 ICSE
Chapter 4 Refraction of Light at Plane Surfaces
EXERCISE - 4 (A) | Q 20. (i) | Page 81

RELATED QUESTIONS

In the adjacent diagram, AO is a ray of light incident on a rectangular glass slab.

  1. Complete the path of the ray till it emerges out of the slab.
  2. In the diagram, mark the angle of incidence (i) and the angle of refraction (r) at the first interface. How is the refractive index of glass related to the angles i and r?
  3. Mark angles of emergence by the letter e. How are the angles i and e related?
  4. Which two rays are parallel to each other? Name them.
  5. Indicate in the diagram the lateral displacement between the emergent ray and the incident ray. State one factor that affects the lateral displacement.

Name the colour of white light which is deviated the most on passing through a prism. 


After tracing the path of rays of light through a glass slab for three different angles of incidence, a student measured the corresponding values angle of refraction r and angle of emergence e and recorded them in the table given below: 

S. No.

i

i

e

I

30°

20°

31°

II

40°

25°

40°

III

50°

31°

49°

The correct observations are:

(A) I and II

(B) II and III

(C) I and III

(D) I, II and III


Four students showed the following traces of the path of a ray of light passing through a rectangular glass slab.

 

The trace most likely to be correct is that of student

(A) I

(B) II

(C) III

(D) IV


Write the SI unit for refractive index.

State two uses of a total reflecting prism as a reflector in place of a plane mirror.

How is the refractive index of a medium related to its real depth and apparent depth?


Why does the sun appear bigger during sunset or sunrise?


The velocity of light in diamond is 121000 kms-1. What is its refractive index?


Draw the ray diagram of a glass slab having medium A and B for the velocity of light ray VA and VB respectively and define Snell's law.

  1. If VB = 1.5 VA, then which medium is denser?
  2. What is the refractive index of A with respect to B?
  3. What is the refractive index of B with respect to A?

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×