What type of light does this light bulb produce most (i. e. at what wavelength does the spectrum have maximum intensity)? Hint: Refer to the image of the electromagnetic spectrum at the beginning of the assignment.

Infrared light

Red visible light

Violet visible light

Ultraviolet light

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)

What is the role of lenses in microscopy?