What is a photon? a small packet of electromagnetic energy that has particle-lik

Question

What is a photon? a small packet of electromagnetic energy that has particle-like properties one form of a nucleon, one of the particles that makes up the nucleus an electron that has been made electrically neutral an electron in an excited state Which of the following is an accurate statement? Infrared photons have enough energy to readily break bonds in a nucleic acid molecule like DNA. In vacuum, ultraviolet photons travel faster than infrared photons. Photons can have positive or negative charge. An ultraviolet photon has more energy than does an infrared photon. A beam of red light and a beam of violet light each deliver the same power on a surface. For which beam is the number of photons hitting the surface per second the greatest? The number of photons per second is the same for both beams. the red beam the violet beam This cannot be answered without knowing just what the light intensity is. A metal surface is illuminated with blue light and electrons are ejected at a given rate each with a certain amount of energy. If the intensity of the blue light is increased, electrons are ejected at the same rate, but with more energy per electron. at the same rate, but with less energy per electron. at a reduced rate with no change in energy per electron. at an increased rate with no change in energy per electron. In order for a photon to eject an electron from a metal's surface in the photoelectric effect, the photon's wavelength must be greater than a certain minimum value. frequency must be greater than a certain minimum value. speed must be greater than a certain minimum value. momentum must be zero. The Compton effect importantly demonstrated which property of electromagnetic radiation? Momenta its wavelength energy content particle nature In the Compton effect, as the scattering angle increases, the frequency of the x-rays scattered at that angle varies randomly. increases. does not change. Decreases. Photons are emitted when a bound electron jumps up to a(n) energy state. Zero higher infinite lower Which hydrogen spectral series falls in the visible region? Brackett Lyman balmer Paschen

Explanation / Answer

From the given question,

8 (A)

Aphoton is a small packet of electromagnetic energy that has particle like nature.

9 D

An ultraviolet photon has more energy than infra red photon

10. A

If the beam of red light and violet light deliver same power on surface, then number of photons is same for both beams.

11.D

If intensity of blue light is increased, then electrons are ejected at an increased rate with no change in energy per photon

12 B

In order for an photon to electro from metal surface in photoelectric effect, the photons frequency must be greater than a certain minimum value.

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