Consider the following statements about visible light, UV light and x-rays : 1. The wavelength of visible light is more than that of X-rays 2. The energy of X-rays photons is higher than that of UV light photons. 3. The energy of UV light photons is less

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Q: 40 (NDA-II/2018)
Consider the following statements about visible light, UV light and x-rays :
1. The wavelength of visible light is more than that of X-rays
2. The energy of X-rays photons is higher than that of UV light photons.
3. The energy of UV light photons is less than that of visible light photons.
Which of the statements given above is/are correct?

question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,18,15,9,18,2,4

keywords: 

{'uv light photons': [0, 0, 0, 1], 'visible light photons': [0, 0, 0, 1], 'uv light': [0, 0, 0, 1], 'visible light': [0, 0, 6, 6], 'wavelength': [0, 0, 3, 3], 'energy': [0, 0, 1, 2]}

The correct answer is option 2: "1 and 2 only."

Let`s break down each statement to understand why this is the correct answer:

1. The wavelength of visible light is more than that of X-rays:

This statement is true. Visible light has longer wavelengths compared to X-rays. Visible light wavelengths range from about 400 to 700 nanometers (nm), while X-ray wavelengths range from about 0.01 to 10 nanometers. Therefore, the wavelength of visible light is indeed more than that of X-rays.

2. The energy of X-ray photons is higher than that of UV light photons:

This statement is also true. Energy is directly proportional to frequency (or inversely proportional to wavelength). Since X-rays have shorter wavelengths than UV light, they have higher frequencies and, consequently, higher energy per photon. Therefore, the energy of X-ray photons is higher than that of UV light photons.

3. The energy of UV light photons is less than that of visible light photons:

This statement is false. UV light has shorter wavelengths and higher frequencies compared to visible light. According to the energy-frequency relationship, higher frequency equates to higher energy. Therefore, the energy of UV light photons is higher than that of visible light photons.

Since statements