APP2 light & optics Review

Front

What happens to the energy of an electromagnetic wave if its wavelength is longer?

Back

Energy is lower.

Front

How do you calculate the frequency of a wave given its speed and wavelength?

Back

Frequency (f) = Speed (v) / Wavelength (λ)

Front

What is the frequency of a wave that has a speed of 0.4 m/s and a wavelength of 0.020 m?

Back

20 hertz.

Front

What type of telescope uses mirrors to gather and focus light?

Back

Reflecting telescope.

Front

What type of wave interaction occurs when a wave bends as it passes through a different medium?

Back

Refraction.

Front

What is the formula to find the frequency of a wave if the speed and wavelength are known?

Back

Frequency (f) = Speed (v) / Wavelength (d)

Front

What type of wave interaction is characterized by the spreading of waves as they pass through an opening?

Back

Diffraction.

Front

What is the relationship between wavelength and energy in electromagnetic waves?

Back

Longer wavelengths correspond to lower energy.

Front

What is the primary difference between a reflecting telescope and a refracting telescope?

Back

Reflecting telescopes use mirrors, while refracting telescopes use lenses.

Front

What is the speed of a wave if its frequency is 10 Hz and its wavelength is 0.5 m?

Back

Speed (v) = Frequency (f) x Wavelength (λ) = 10 Hz x 0.5 m = 5 m/s.