Match List I correctly with List II and select your answer using the codes given below :

List I	List II
a) Iλ =c1λ-5/ec2/λT -1	1. Wien's Law
b) λT = constant	2. Planck's Law
c) Eb =σT4	3. Nusselt equation
d) h = 0.943 [k3ƒp2ƒλg/μlL∆Tƒ]1/4	4. Stefan-Boltzmann's Law

Codes :

Economy of an evaporator is defined as

Capacity of an evaporator is defined as

25 per cent cut segmental baffle means

In a finned tube heat exchanger

Two very large gray planes are at the constant temperatures of T₁ and T₂. If the two gray planes have emissivities of ε₁ and ε₂, respectively, what is the net heat exchange rate per unit area