Mathematics · Heat Transfer
एक बहुत लंबी छड़ (व्यास = 25 mm, तापीय चालकता = 400 W/m·K) 125°C के तापमान पर बनी एक सतह से बाहर की ओर फैली हुई है। आसपास की हवा का तापमान 25°C है, और छड़ पर संवहनी ऊष्मा स्थानांतरण गुणांक (convective heat transfer coefficient) 9 W/m2·K है। छड़ से ऊष्मा हानि (heat loss rate) की दर क्या होगी? [मान लें π2 = 10]
Verified Solution4 OptionsUpdated: October 2026👁️1 View
Share:
- 148 W
- 230 W✓
- 312 W
- 424 W
सही उत्तर देखें
30 W
Download Single Question PDF
Save this question and verified answer as a clean study sheet with live clickable link.
👥
Share with Friends & Study Groups
Challenge your peer aspirants on WhatsApp or Telegram to solve this question!
Online Test Series
Start Free Mock Test →Preparing for Mathematics?
Practice full-length mock tests with real exam timers, instant score analysis, and all-India ranking.
Chapter Practice
Practice Heat Transfer MCQs →Want more practice questions on Heat Transfer?
Solve complete topic-wise tests with detailed solutions on GkGet.
Related Practice Questions
Recommended practice questions in Mathematics · Heat Transfer