Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Physics Heat and Transfer
What is the unique characteristic feature of a perfect Black body?
1
A good absorber only
2
A good absorber and a good radiator
3
A good radiater
4
More than one of the above
5
None of the above