Answer:
Sapphire and diamond impurities change with their transparency and role of impurities in dielectrics is discussed below.
Explanation:
Temperature dependence of the dielectrics with different degrees of purity measured in the range of 233-313 K. This was observed that the impurities presence is strongly influences the dielectric constant, dipole moment and melting point.
SAPPHIRE
Sapphire is a very important gem stone. It's color is blue, but the naturally occurring sapphires have purple, yellow,orange and green. This variety in color is due to trace amount of presence of impurities like Iron,titanium, chromium, copper and Magnesium. It is the third hardest materials in the Mohs scale. The transparency of Sapphire is due to the impurities present in it.
DIAMOND
Diamond is the very precious stone. The transparency in the diamond is due to the band structure, that is the band gap is high in the diamonds, so they are transparent in nature. Diamond has many unequaled qualities and is very unique among the other minerals. It has highest refractive index of any natural minerals and is transparent over greatest number of wavelengths due to conduction present in it.
Given
The speed of light through a medium is
To find
The type of material
Explanation
The velocity through a medium is given by
where c is the speed of light in .
n is the refractive index of the material
Thus,
Thus the refractive index is 2.419
We know diamond has a refractive index of 2.417-2.419
Conclusion
The material is diamond
Answer:
Explanation:
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Longer Health. Maybe give more options?
Answer:
1) A:1, B:1, C:1
2) A:1, B:1, C:1
3) B:1, C:2, A:3
Explanation:
1)
a = , where V - linear speed.
R - radius of ferris wheel.
These values are constant, so at any position centripetal acceleration will be the same.
2)
F = ma = , where a - centripetal acceleration.
V - linear speed.
R - radius of ferris wheel.
These values are constant, so at any position centripetal force will be the same.
3)
So, at bottom point normal force is maximume, at top point normal force is minimum.
B:1, C:2, A:3 (bottom: Greatest, midheight: Second greatest, top: Third greatest)