UPSC Exam > UPSC Questions > Two electric bulbs have tungsten filament of ...
Start Learning for Free
Two electric bulbs have tungsten filament of the same length but of different radii if the bulbs are of wattage 40 watt and 60 watt and the radii of their filaments R1 and R2 respectively then (A) r1 = r2 (B) r1> r2 (C) r1 < r2="" (d)="" none?="" r2="" (d)="" />
Most Upvoted Answer
Two electric bulbs have tungsten filament of the same length but of di...
Comparison of Filament Radii in Electric Bulbs
Electric bulbs with tungsten filaments of different wattages (40W and 60W) and filament radii (R1 and R2) can be compared based on their physical properties.
Key Points:
- The wattage of an electric bulb is related to the amount of heat and light it produces.
- The length of the filament remains the same for both bulbs.
- The radii of the filaments (R1 and R2) are different for the two bulbs.
Comparison:
- Since the length of the filaments is the same for both bulbs, the difference in wattage (40W and 60W) is primarily due to the difference in the radii of the filaments.
- The greater the surface area of the filament, the more heat it can generate, resulting in a higher wattage bulb.
- Therefore, R2 (filament radius for the 60W bulb) must be greater than R1 (filament radius for the 40W bulb) for the 60W bulb to produce more heat and light.
Conclusion:
- The correct answer is (B) r1 < />, indicating that the filament radius for the 60W bulb is greater than the filament radius for the 40W bulb. This difference in filament radii accounts for the variation in wattage between the two bulbs.
Electric bulbs with tungsten filaments of different wattages (40W and 60W) and filament radii (R1 and R2) can be compared based on their physical properties.
Key Points:
- The wattage of an electric bulb is related to the amount of heat and light it produces.
- The length of the filament remains the same for both bulbs.
- The radii of the filaments (R1 and R2) are different for the two bulbs.
Comparison:
- Since the length of the filaments is the same for both bulbs, the difference in wattage (40W and 60W) is primarily due to the difference in the radii of the filaments.
- The greater the surface area of the filament, the more heat it can generate, resulting in a higher wattage bulb.
- Therefore, R2 (filament radius for the 60W bulb) must be greater than R1 (filament radius for the 40W bulb) for the 60W bulb to produce more heat and light.
Conclusion:
- The correct answer is (B) r1 < />, indicating that the filament radius for the 60W bulb is greater than the filament radius for the 40W bulb. This difference in filament radii accounts for the variation in wattage between the two bulbs.
Attention UPSC Students!
To make sure you are not studying endlessly, EduRev has designed UPSC study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in UPSC.
|
Explore Courses for UPSC exam
|
|
Similar UPSC Doubts
Top Courses for UPSCView all
Two electric bulbs have tungsten filament of the same length but of different radii if the bulbs are of wattage 40 watt and 60 watt and the radii of their filaments R1 and R2 respectively then (A) r1 = r2 (B) r1> r2 (C) r1
Question Description
Two electric bulbs have tungsten filament of the same length but of different radii if the bulbs are of wattage 40 watt and 60 watt and the radii of their filaments R1 and R2 respectively then (A) r1 = r2 (B) r1> r2 (C) r1 for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Two electric bulbs have tungsten filament of the same length but of different radii if the bulbs are of wattage 40 watt and 60 watt and the radii of their filaments R1 and R2 respectively then (A) r1 = r2 (B) r1> r2 (C) r1 covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two electric bulbs have tungsten filament of the same length but of different radii if the bulbs are of wattage 40 watt and 60 watt and the radii of their filaments R1 and R2 respectively then (A) r1 = r2 (B) r1> r2 (C) r1 .
Two electric bulbs have tungsten filament of the same length but of different radii if the bulbs are of wattage 40 watt and 60 watt and the radii of their filaments R1 and R2 respectively then (A) r1 = r2 (B) r1> r2 (C) r1 for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Two electric bulbs have tungsten filament of the same length but of different radii if the bulbs are of wattage 40 watt and 60 watt and the radii of their filaments R1 and R2 respectively then (A) r1 = r2 (B) r1> r2 (C) r1 covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two electric bulbs have tungsten filament of the same length but of different radii if the bulbs are of wattage 40 watt and 60 watt and the radii of their filaments R1 and R2 respectively then (A) r1 = r2 (B) r1> r2 (C) r1 .
Solutions for Two electric bulbs have tungsten filament of the same length but of different radii if the bulbs are of wattage 40 watt and 60 watt and the radii of their filaments R1 and R2 respectively then (A) r1 = r2 (B) r1> r2 (C) r1 in English & in Hindi are available as part of our courses for UPSC.
Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free.
Here you can find the meaning of Two electric bulbs have tungsten filament of the same length but of different radii if the bulbs are of wattage 40 watt and 60 watt and the radii of their filaments R1 and R2 respectively then (A) r1 = r2 (B) r1> r2 (C) r1 defined & explained in the simplest way possible. Besides giving the explanation of
Two electric bulbs have tungsten filament of the same length but of different radii if the bulbs are of wattage 40 watt and 60 watt and the radii of their filaments R1 and R2 respectively then (A) r1 = r2 (B) r1> r2 (C) r1 , a detailed solution for Two electric bulbs have tungsten filament of the same length but of different radii if the bulbs are of wattage 40 watt and 60 watt and the radii of their filaments R1 and R2 respectively then (A) r1 = r2 (B) r1> r2 (C) r1 has been provided alongside types of Two electric bulbs have tungsten filament of the same length but of different radii if the bulbs are of wattage 40 watt and 60 watt and the radii of their filaments R1 and R2 respectively then (A) r1 = r2 (B) r1> r2 (C) r1 theory, EduRev gives you an
ample number of questions to practice Two electric bulbs have tungsten filament of the same length but of different radii if the bulbs are of wattage 40 watt and 60 watt and the radii of their filaments R1 and R2 respectively then (A) r1 = r2 (B) r1> r2 (C) r1 tests, examples and also practice UPSC tests.
|
|
Explore Courses for UPSC exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup