Import Question JSON

Current Question (ID: 7575)

Question:

$\text{In photoelectric effect, the kinetic energy of photoelectrons increases linearly}$ $\text{with the:}$

Options:

1. $\text{Wavelength of incident light.}$
2. $\text{Frequency of incident light.}$
3. $\text{Velocity of incident light.}$
4. $\text{Atomic mass of an element.}$

Solution:

$\text{Hint: Kinetic energy of the ejected electron is proportional to the frequency}$ $\text{of the electromagnetic radiation.}$\n\n$\text{Explanation:}$\n\n$\text{In photoelectric effect, photoelectrons are emitted only}$ $\text{when light of frequency higher than the threshold frequency falls at the}$ $\text{surface of the metal.}$\n\n$\text{Thus, kinetic energy of photoelectron increases linearly with the frequency of}$ $\text{incident light.}$

Import JSON File

Upload a JSON file containing LaTeX/MathJax formatted question, options, and solution.

Expected JSON Format:

{
  "question": "The mass of carbon present in 0.5 mole of $\\mathrm{K}_4[\\mathrm{Fe(CN)}_6]$ is:",
  "options": [
    {
      "id": 1,
      "text": "1.8 g"
    },
    {
      "id": 2,
      "text": "18 g"
    },
    {
      "id": 3,
      "text": "3.6 g"
    },
    {
      "id": 4,
      "text": "36 g"
    }
  ],
  "solution": "\\begin{align}\n&\\text{Hint: Mole concept}\\\\\n&1 \\text{ mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6] = 6 \\text{ moles of carbon atom}\\\\\n&0.5 \\text{ mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6] = 6 \\times 0.5 \\text{ mol} = 3 \\text{ mol}\\\\\n&1 \\text{ mol of carbon} = 12 \\text{ g}\\\\\n&3 \\text{ mol carbon} = 12 \\times 3 = 36 \\text{ g}\\\\\n&\\text{Hence, 36 g mass of carbon present in 0.5 mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6].\n\\end{align}",
  "correct_answer": 4
}