Grade 12th PassModern Physics

WHICH OF THE FOLLOWING IS MORE CLOSE TO A BLACK HOLE? (A) BLACK BOARD PAINT (B) BLACK HOLE (C) GREEN LEAVES (D) RED ROSES [AIEEE 2002] EXPLAIN ALSO.

ATUL KUMAR

14 Years agoGrade 12th Pass

2 Answers

Shyama P

14 Years ago

The Q. is :

WHICH OF THE FOLLOWING IS MORE CLOSE TO A BLACK BODY?

A. Black Board Paint

A perfectly black body is one which absorb & emit radiation of all wavelength. Black is perfect ab. & emitter.

Black hole does not emit any radiation ; it just ab everything.

Arpit Chaudhary

14 Years ago

A. Black board paint

Since a black hole is one which can absorb every kind if energy even light cant escape from it.

From the above given options "black board paint" which can absorb most of light and reflects only some rays back

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WHICH OF THE FOLLOWING IS MORE CLOSE TO A BLACK HOLE? (A) BLACK BOARD PAINT (B) BLACK HOLE (C) GREEN LEAVES (D) RED ROSES [AIEEE 2002] EXPLAIN ALSO.

ATUL KUMAR

2 Answers

Shyama P

Arpit Chaudhary

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