Question

answer it with solution​

Answer 1

Answer:

B option is the correct answer. For detailed solution check out the attachment.

Answer 2

Answer:

Tan● =V/I= R is directly prop. to T1

Cot●= V/I = R is directly prop. to T2

k(T2-T1)=cot●-tan●

= 1- tan^2●/(tan●)

=2cot(2●)

so

(T1 - T2) is directly proportional to cot(2●)

hope this helps you to understand