NEET Electromagnetic Waves — Set 12

Question 1

What is the approximate wavelength range of visible light as per the document?

Accepted Answer

The document states that visible light ranges from about $ 700 \, \text{nm} $ to $ 400 \, \text{nm} $.

Question 2

Why are X-rays used as a diagnostic tool in medicine?

Accepted Answer

The document explains that X-rays can penetrate tissues and are used to image internal structures, making them effective for diagnosis.

Question 3

An electromagnetic wave has an angular frequency $ \omega = 6 \times 10^{11} \, \text{rad/s} $. What is its frequency in Hz?

Accepted Answer

Frequency $ v = \frac{\omega}{2\pi} $. Given $ \omega = 6 \times 10^{11} \, \text{rad/s} $, $ v = \frac{6 \times 10^{11}}{2 \pi} \approx 9.55 \times 10^{10} \, \text{Hz} $.

NEET Physics: Electromagnetic Waves — Practice Set 12

Q1. What is the approximate wavelength range of visible light as per the document?

Q2. Why are X-rays used as a diagnostic tool in medicine?

Q3. An electromagnetic wave has an angular frequency \( \omega = 6 \times 10^{11} \, \text{rad/s} \). What is its frequency in Hz?

Q4. In the electromagnetic spectrum, what characteristic of UV rays makes them harmful to human tissue?

Q5. Which type of electromagnetic waves are produced by radioactive decay of the nucleus?

Q6. What does Gauss's Law for electricity describe in Maxwell's equations?

Q7. Why are gamma rays used in sterilization of medical equipment?

Q8. In electromagnetic wave propagation, what ensures energy conservation during wave travel?

Q9. Which scientist succeeded in transmitting electromagnetic waves over long distances, marking the beginning of communication technology?

Q10. What characteristic of radio waves enables their use in broadcasting over large areas?