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Waves and Light — Test Answers

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A light with a second-order bright band forms a diffraction angle of 30.0 degrees The diffraction grating has 250 point 0 lines per mm What is the wavelength of the light?

A
800 nanometers
B
1 comma 386 nanometers
C
1 comma 000 nanometers
D
1 comma 732 nanometers
22
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Which best describes what happens to sunlight after it passes through the keyhole of a door?

A
It bends back toward the door.
B
It scatters back toward the door.
C
It converges into one particular shadow region.
D
It spreads out into multiple shadow regions.
23

Which best describes electromagnetic waves moving from gamma rays to radio waves along the electromagnetic spectrum?

A
Wavelength decreases, and frequency increases.
B
Wavelength and frequency increase.
C
Wavelength and frequency decrease.
D
Wavelength increases, and frequency decreases.
24

Which shows the correct magnification equation?

A
the fraction with numerator d sub i and denominator d sub o is equal to negative the fraction with numerator h sub i and denominator d sub o
B
the fraction with numerator h sub i and denominator h sub o is equal to the fraction with numerator d sub i and denominator d sub o
C
the fraction with numerator d sub i and denominator d sub o is equal to the fraction with numerator h sub i and denominator d sub o
D
the fraction with numerator h sub i and denominator h sub o is equal to negative the fraction with numerator d sub i and denominator d sub o
25

A light with a second-order bright band forms a diffraction angle of 30.0 degrees The diffraction grating has 250 point 0 lines per mm What is the wavelength of the light?

A
800 nanometers
B
1 comma 000 nanometers
C
1 comma 732 nanometers
D
1 comma 386 nanometers

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Waves and Light — Test Answers — Physics