Heat conduction through two rods in seriesश्रेणी में दो छड़ों से ऊष्मा चालन

NCERT Fig 10.15 · interactive diagram

Parts and their functions

• Hot end 300 °C (गर्म सिरा 300 °C) — Rods are insulated: heat flows only along their length.
• Steel rod (K = 50.2 W m⁻¹ K⁻¹) (इस्पात छड़ (K = 50.2 W m⁻¹ K⁻¹)) — L = 15 cm, area 2A: H = 50.2 × 2A(300 − T)/0.15.
• Copper rod (K = 385 W m⁻¹ K⁻¹) (ताँबे की छड़ (K = 385 W m⁻¹ K⁻¹)) — L = 10 cm, area A: H = 385A(T − 0)/0.10.
• Cold end 0 °C (ठंडा सिरा 0 °C) — Kept in melting ice.
• Junction temperature (संधि का ताप) — Equate the two H: 669.3(300 − T) = 3850T ⇒ T = 44.4 °C.
• Heat current H (ऊष्मा धारा H) — In the steady state no part gains heat, so the same H flows through each rod.

Original diagram drawn by Simple Learning Hub, based on NCERT Fig 10.15. Report a mistake