MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Simran Bhatia Grade: 11
        Calculate the amount of heat radiated per second by a body of surface area 12 cm2 kept in thermal equilibrium in a room at temperature 20°C. The emissivity of the surface = 0.80 and σ = 6.0 × 10-8 W/m2-K4. 
3 years ago

Answers : (1)

Aditi Chauhan
askIITians Faculty
396 Points
										Sol. A = 12 cm^2 = 12 × 10^–4 m2 T = 20°C = 293 K

e = 0.8 σ = 6 × 10^–8 w/m^2-k^4
Q/t = Ae σT^4 = 12 × 10^–4 0.8 × 6 × 10^–8 (293)^4 = 4.245 × 10^12 × 10^–13 = 0.4245 ≈ 0.42
3 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete Physics Course - Class 12
  • OFFERED PRICE: Rs. 2,756
  • View Details
  • Complete Physics Course - Class 11
  • OFFERED PRICE: Rs. 2,968
  • View Details

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details