Answer:
b. a lens does not focus all colors of light to the same place.
Explanation:
Chromatic aberration is a defect of a lens. In this defect, the lens is unable to focus the different wavelengths of the light on a single focal point. It is also known as chromatic distortion and color fringing. It is caused by the dispersion of light while passing through a lens. As a result, the image might become blurred and different colors are observed around its edges. It can be corrected by the use of a combination of converging and diverging lenses.
Hence, the correct option will be:
<u>b. a lens does not focus all colors of light to the same place.</u>
Answer:
The equatiom of kinetic energy is 1/2×m×v² where m represents mass and v is velocity :
The unit for kinetic energy is measured in Joules (J).
Answer:
0.283m
Explanation:
Speed (v) = wavelength × Frequency (f)
Wavelength = speed/ frequency
Wavelength = 343/ 1210 = 0.283m
Material b has highest heat
Answer:
30ft/s
Explanation:
U'1-2 = 0
Using the equation
T1 + Vg1 = T2 + Vg2
Take dactum Vg1 = 0 at ground level
T1 =[ 1/2 × (175 + 10)/32.2] × V^2
T1 = 2.87V^2
T2 = 0
Vg1 = (175 + 10) ×(42/12) = 648ft.lb
Vg2 = 175(18) + 10(8) = 3230ft.lb
Therefore, 2.87V^2 + 648 = 0 + 3230
3230 - 648 = 2.87V^2
2582 = 2.87V^2
V^2 = 2582/2.87
V ^2 = 889.65
V = Sqrt (889.65)
V = 29.99 = approximately 30ft/s