NEET Electromagnetic Waves — Set 24

Question 1

Which type of electromagnetic waves are produced by special vacuum tubes like klystrons and magnetrons?

Accepted Answer

The document mentions that microwaves are produced by special vacuum tubes such as klystrons and magnetrons.

Question 2

What is the typical wavelength range of gamma rays as per the electromagnetic spectrum?

Accepted Answer

The document states that gamma rays have wavelengths from about $ 10^{-10} \, \text{m} $ to less than $ 10^{-14} \, \text{m} $.

Question 3

A capacitor in a circuit has a conduction current of $ 1.8 \, \text{A} $ in the wires. What is the displacement current between the plates?

Accepted Answer

The document states that in a charging capacitor, the displacement current between the plates equals the conduction current in the wires, so $ i_d = 1.8 \, \text{A} $.

NEET Physics: Electromagnetic Waves — Practice Set 24

Q1. Which type of electromagnetic waves are produced by special vacuum tubes like klystrons and magnetrons?

Q2. What is the typical wavelength range of gamma rays as per the electromagnetic spectrum?

Q3. A capacitor in a circuit has a conduction current of \( 1.8 \, \text{A} \) in the wires. What is the displacement current between the plates?

Q4. Which frequency range includes TV waves according to the document?

Q5. Which type of electromagnetic waves are emitted by hot bodies and molecules?

Q6. What protects the Earth from most of the sun's ultraviolet radiation?

Q7. An electromagnetic wave has a wave number \( k = 1 \, \text{rad/m} \). What is its wavelength in vacuum?

Q8. What is one environmental concern related to the depletion of the ozone layer mentioned in the document?

Q9. Which of Maxwell's equations relates the electric field to the rate of change of magnetic flux?

Q10. In the electromagnetic spectrum, what distinguishes gamma rays as particularly penetrating?