NEET Electromagnetic Waves — Set 10

Question 1

What type of motion of charges produces electromagnetic waves?

Accepted Answer

The document states that accelerated charges, such as those in oscillatory motion, produce electromagnetic waves, while stationary or uniformly moving charges do not.

Question 2

In electromagnetic theory, what distinguishes the production mechanism of radio waves from that of visible light?

Accepted Answer

Radio waves are typically produced by oscillating currents in macroscopic circuits (like antennas), while visible light arises from electron transitions between energy levels within atoms.

Question 3

Why are microwaves used in radar systems for aircraft navigation?

Accepted Answer

The document explains that microwaves are suitable for radar systems because their short wavelengths allow for precise direction and ranging.

NEET Physics: Electromagnetic Waves — Practice Set 10

Q1. What type of motion of charges produces electromagnetic waves?

Q2. In electromagnetic theory, what distinguishes the production mechanism of radio waves from that of visible light?

Q3. Why are microwaves used in radar systems for aircraft navigation?

Q4. An electromagnetic wave travels in vacuum with frequency \( 10 \, \text{MHz} \). What is its wavelength? (Given \( c = 3 \times 10^8 \, \text{m/s} \))

Q5. Which electromagnetic waves are emitted by electrons transitioning between energy levels in atoms?

Q6. Why are infrared detectors used in Earth satellites?

Q7. What is the primary difference between various types of electromagnetic waves according to the document?

Q8. What characteristic of visible light explains why humans evolved sensitivity to it?

Q9. What does Maxwell's displacement current ensure in the generalized Ampere's law?

Q10. What is a common method to detect visible light according to the document?