Question

9 multiple choice 10 points a photons energy depends on its frequency. which statement best describes this relationship? the frequency has no impact on the photons energy. photons energy depends on the surface it hits. the higher the frequency, the more energy the photon has. the lower the frequency, the more energy the photon has. 10 multiple choice 10 points x - rays, being higher in frequency, possess more energy than radio waves. how does this principle affect human health when using x - ray technology for medical imaging? x - rays improve cell regeneration, aiding faster recovery and healing. x - rays can cause harmful ionization in cells, increasing cancer risk. x - rays are safer than radio waves due to shorter exposure times. x - rays have no health impact due to their energy being absorbed by equipment.

Explanation:

Question 9

Step1: Recall photon energy formula

The energy of a photon is given by \(E = h
u\), where \(h\) is Planck's constant (\(h> 0\)) and \(
u\) is the frequency.

Step2: Analyze the relationship

Since \(h\) is a positive constant, \(E\propto
u\). As \(
u\) increases, \(E\) increases.

Question 10

Step1: Understand ionization concept

Higher - energy photons (like X - rays) can ionize atoms in cells. Ionization can damage DNA.

Step2: Relate to health effects

DNA damage can lead to mutations. Uncontrolled cell growth (cancer) can occur due to these mutations.

Answer:

Question 9: C. The higher the frequency, the more energy the photon has.
Question 10: B. X - rays can cause harmful ionization in cells, increasing cancer risk.