Question

11. The diffraction grating breaks up light into specific colors at precise angles. The precise angle θ 1 for color at wavelength λ 1 is a result of...

A. constructive interference occurs for that wavelength λ1 at that exact angle, θ1.

B. Newton's secret fourth law of jelly donut motion.

C. Newton's 2nd law at that precise angle cancels out exactly.

D. the denominator of the wave equation cancels the numerator at that precise angle.

12. There is no fundamental unit of mass in the metric system. It can only be derived from separate distance and time measurments.

True

False

13. The famous fable of the tortoise and the hare, in which the tortoise wins the race, is decided by the difference between their ________.

A. ability to accelerate

B. initial position

C. masses.

D. average speeds

Answer 1

F. the light at different In diffraction grating of different wardength angle Because of 1 construchire interference. v Constructive interference Wavelength to at that occur for that exact angle o 12: False unit. fundamental Mass has is aresage speed. ability 13 average Speeds