Theory & Procedure, Refraction of Light in Rectangular Glass Slab Class 10 Notes | EduRev

Science Class 10

Class 10 : Theory & Procedure, Refraction of Light in Rectangular Glass Slab Class 10 Notes | EduRev

The document Theory & Procedure, Refraction of Light in Rectangular Glass Slab Class 10 Notes | EduRev is a part of the Class 10 Course Science Class 10.
All you need of Class 10 at this link: Class 10

As performed in the real lab:

Apparatus:

A drawing board, rectangular glass slab, office pins, sheet of white paper, a protractor and sharply pointed pencil.

Procedure:

  • Fix a sheet of white paper on a drawing board with drawing pins. Place the given glass slab nearly in the middle of the sheet.
  • Mark the boundary of the glass slab with a sharp pencil and label it as PQRS after removing the slab from its position.
  • On the line PQ mark a point E and draw a normal N1EN2 at it. Draw a line AE making angle AEN1 with the normal.The angle should neither too small nor too large (say about 40 degree).
  • Now place the glass slab again on its boundary PQRS and fix two pins A and B vertically about 10 cm apart on the line AE (say points A and B).
  • Look through the glass slab along the plane of the paper from the side SR and move your head until the images of the two pins A and B are seen clearly. Closing your one eye ,adjust the position of your head in such a way that the images of the pins A and B lie in the same straight line.
  • Fix two other pins C and D vertically in such a way that the images of the pins A and B and pins C and D, all these four, lie in the same straight line. Ensure that the feet of the pins ( not their heads ) lie in the same straight line.
  • Remove the slab and also the pins from the board and encircle the pin-pricks on the paper,with a sharp pencil.
  • Join the points D and C and produce the line DC towards the slab so that it meets the boundary line RS at the point F. Join the points e and F. Thus for the incident ray represented by line AE, the refracted ray and the emergant ray are represented by EF and FD respectively.
  • On the line RS draw a normal N1'FN2'  at point F. Now, with a protractor, measure angle AEN1, angle FEN2 and angle DFN2' labelled as angle i, angle r and angle e respectively. 
  • Now place the glass slab at some other position on the sheet of paper fixed on the board and repeat all the above steps again taking another angle of incidence.
  • Measure the angle of incidence i.e angle of refraction, angle of emergence, again.
  • Make a record of your observations in the observation table as shown below.

Theory & Procedure, Refraction of Light in Rectangular Glass Slab Class 10 Notes | EduRev 

Observation Table :

 Theory & Procedure, Refraction of Light in Rectangular Glass Slab Class 10 Notes | EduRev

 

As performed in the simulator:

  • Click on Show values checkbox to display the refractive indices of air and glass, angle of incidence and angle of refraction.
  • Move the Observer to get an approximate emergent ray.
  • Note down the angle of incidence, angle of refraction and angle of emergence in the Observation Table.
  • To view the actual emergent ray click on Emergent Ray checkbox.
  • Use the slider to change the angle of incidence, and repeat the above steps.
Offer running on EduRev: Apply code STAYHOME200 to get INR 200 off on our premium plan EduRev Infinity!

Related Searches

Refraction of Light in Rectangular Glass Slab Class 10 Notes | EduRev

,

practice quizzes

,

Viva Questions

,

Sample Paper

,

Objective type Questions

,

MCQs

,

study material

,

Free

,

Semester Notes

,

pdf

,

past year papers

,

Theory & Procedure

,

Theory & Procedure

,

Theory & Procedure

,

mock tests for examination

,

video lectures

,

ppt

,

Extra Questions

,

shortcuts and tricks

,

Exam

,

Summary

,

Refraction of Light in Rectangular Glass Slab Class 10 Notes | EduRev

,

Refraction of Light in Rectangular Glass Slab Class 10 Notes | EduRev

,

Previous Year Questions with Solutions

,

Important questions

;