Gray equals: (A) 100 rad, (B) 1000 rad, (C) 10000 rad, (D) All
Answer is A. A i.e., 100 rads Rad (radiation absorbed dose) is energy deposited within living matter & is equal to 100 ergs/gm of tissue. Whereas, I gray is absorption of 1 joule energy by 1 kg living matter.