Explain NCERT Class 10 Science Activity 10.10 Solution | Activity 10.10 Class 10 Science NCERT

Explain NCERT Class 10 Science Activity 10.10 Solution 

In this article, we will discuss activity 10.10 class 10 science. You will find a complete explanation with a conclusion.

After studying this activity 10.10 Class 10 Science Light- Reflection and Refraction, you will be able to solve Questions of Chapter 10 Light- Reflection and Refraction.

 

Activity 10.10 Class 10 Science NCERT

   ·     Fix a sheet of white paper on a drawing board using drawing pins.

   ·     Place a rectangular glass slab over the sheet in the middle.

   ·     Draw the outline of the slab with a pencil. Let us name the outline ABCD.

   ·     Take four identical pins.

   ·     Fix two pins say E and F vertically such that the line joining the pins are inclined to the edge AB.

   ·     Look for the images of the pins E and F through the opposite edge. Fix two other pins say G and H such that these pins and the images of E and F lie on a straight line.

   ·     Remove the pins and slab.

    ·     Join the positions of the tip of the pins E and F and produce the lineup to AB. Let EF meet AB at O. similarly, join the positions to the tip of the pins G and H and produce it up to the edge CD. Let HG meet CD at O’.

    ·     Join O and O’. also produce EF up to P, as shown by a dotted line in the figure.

 

Observation and Explanation of activity 10.10 Class 10 Science

We draw normal NN’ at point O perpendicular to AB and MM’ at point O’ perpendicular to CD.

The ray EFO is the incident ray that enters from air to the glass slab at point O. it bends towards the normal NN’. This is the first refraction of the light ray.

The ray  OO’ is refracted ray.

At point O’, the ray O’GH is the emergent ray that enters from the glass slab into the air. It bends away from the normal MM’. this is the second refraction.

 We can see the angle of incidence `∠i_1`       is equal to the angle of emergence  `∠r_2`.

Conclusion of activity 10.10 Class 10 Science

Activity 10.10 shows that the light ray that enters from a rarer medium to a denser medium bends toward the normal and enters from a denser to rarer medium bends away from the normal.

 

 Related Topics for You

1.  Activity 10.11 Class 10 Science

2. Activity 10.9 Class 10 Science

3. NCERT Solutions of Chapter 10