Dual Nature of Light

Who proposed the corpuscular theory of light?

• Sir Isaac Newton

• Rene Descartes

• Christiaan Huygens

• Galileo Galilei

Rene Descartes experiments on prisms revealed that _______________.

• Red light refracts more than blue light.

• Blue light refracts more than red light.

• Light refracts in the same amount regardless of the color.

• Not all colors of light refracts.

Red light is least deflected. This is because the corpuscles of red light are the __________________.

• most massive

• least massive

• most reflected

• most absorbed

Two materials have identical indices of refraction. This implies that when light enters the second media, it ________________.

• speeds up

• slows down

• maintains its speed

• behaves unpredictably

According to Newton, which of the following will be easily refracted?

• red laser

• blue laser

• green laser

• yellow laser

What is the speed of light in vacuum?

• 3.00 x 10^8 m/s

• 3.00 x 10^7 m/s

• 3.00 x 10^6 m/s

• 3.00 x 10^5 m/s

The particle model of light postulates that energy exists in discrete values called __________________.

• quanta

• packets

• wavelength

• corpuscles

Which of the following refers to the band of light dispersed into colors and projected on a screen?

• spectrum

• quantum

• shadow

• light band

In photoelectric effect, which condition will produce a greater flow of electrons (photoelectric current)?

• bright light

• dim light

• reflected light

• refracted light

Which of the following devices operates under the principle of photoelectric effect?

• solar panels

• voltaic cells

• transistors

• vacuum tubes