CUET · PHYSICS · PYQ PAPER 2023
X-rays of wavelength \( = 1\text{\AA} \) have frequency
- A \( 3 \times 10^8 \text{ Hz} \)
- B \(3 \times 10^{18} \text{ Hz} \)
- C \( 3 \times 10^{10} \text{ Hz} \)
- D \( 3 \times 10^{15} \text{ Hz} \)
Answer & Solution
Correct Answer
(B) \(3 \times 10^{18} \text{ Hz} \)
Step-by-step Solution
Detailed explanation
\( f = \frac{c}{\lambda} \) \( f = \frac{3 \times 10^8 \text{ m/s}}{1 \times 10^{-10} \text{ m}} \) \( f = 3 \times 10^{18} \text{ Hz} \)
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