Published by:
CGP EDU Academic Team
Published on: September 12, 2026
An oxide coated filament is useful in vacuum tubes because essentially
Text Solution
Verified by ExpertsThe correct answer is:
D
Step 1: Understand the function of the oxide coating on the filament in vacuum tubes.
Step 2: The oxide coating reduces the work function of the filament, making it easier for electrons to be emitted when heated.
Step 3: This allows the filament to emit electrons at lower temperatures compared to uncoated filaments.
Therefore, Option D is the correct answer.
Step 2: The oxide coating reduces the work function of the filament, making it easier for electrons to be emitted when heated.
Step 3: This allows the filament to emit electrons at lower temperatures compared to uncoated filaments.
Therefore, Option D is the correct answer.
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
In the Millikan's experiment, the distance between two horizontal plates is 2.5 cm and the potentia…
The cathode rays have particle nature because of the fact that
In Millikan's experiment for the determination of the charge on the electron, the reason for using …
The mass of a particle is 400 times than that of an electron and the charge is double. The particle…
An electron (charge ) is accelerated through a potential of . The energy acquired by the electron…
While doing his experiment, Millikan one day observed the following charges on a single drop (i) …