10th Class Physical Science Project Works in Chapter 5. Refraction of Light at Plane Surfaces
These are the important physical science project works will be given to the Students who are studying 10th Class in both Andhra pradesh & telangana States. These Project works increase the creative thinking in the Students which is helps allot in New Evaluation System C.C.E (Continuous Comprehensive Evaluation System) introduced by SCERT.
10th Class Physical Science Project work - 1:
Collect the values of refractive index of the following media. Water, coconut oil, flint glass,
crown glass, diamond, benzene and hydrogen gas.
10th Class Physical Science Project work - 2:
Collect information on working of optical fibres. Prepare a report about various uses of optical
fibres in our daily life.
10th Class Physical Science Project work - 3:
Take a thin thermocol sheet. Cut it in circular discs of different radii like 2cm, 3cm, 4cm, 4.5cm,
5cm etc and mark centers with sketch pen. Now take needles of length nearly 6cm. Pin a
needle to each disc at its centre vertically. Take water in a large opaque tray and place the disc
with 2cm radius in such a way that the needle is inside the water as shown in figure.
Now try to view the free end (head) of the needle from surface of the water.
Are you able to see the head of the needle?
Now do the same with other discs of different radii. Try to see the head of the needle, each
time.
Note: the position of your eye and the position of the disc on water surface should
not be changed while repeating the activity with other discs.
• At what maximum radius of disc, were you not able to see the free end of the needle?
• Why were you not able to view the head of the nail for certain radii of the discs?
• Does this activity help you to find the critical angle of the medium (water)?
Draw a diagram to show the passage of light ray from the head of the nail in different
situations.
Collect the values of refractive index of the following media. Water, coconut oil, flint glass,
crown glass, diamond, benzene and hydrogen gas.
10th Class Physical Science Project work - 2:
Collect information on working of optical fibres. Prepare a report about various uses of optical
fibres in our daily life.
10th Class Physical Science Project work - 3:
Take a thin thermocol sheet. Cut it in circular discs of different radii like 2cm, 3cm, 4cm, 4.5cm,
5cm etc and mark centers with sketch pen. Now take needles of length nearly 6cm. Pin a
needle to each disc at its centre vertically. Take water in a large opaque tray and place the disc
with 2cm radius in such a way that the needle is inside the water as shown in figure.
Now try to view the free end (head) of the needle from surface of the water.
Are you able to see the head of the needle?
Now do the same with other discs of different radii. Try to see the head of the needle, each
time.
Note: the position of your eye and the position of the disc on water surface should
not be changed while repeating the activity with other discs.
• At what maximum radius of disc, were you not able to see the free end of the needle?
• Why were you not able to view the head of the nail for certain radii of the discs?
• Does this activity help you to find the critical angle of the medium (water)?
Draw a diagram to show the passage of light ray from the head of the nail in different
situations.
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