Unit of radiation absorption is:

Ans. c (Gray). (Ref. Park PSM, 17th ed. 363, 522)RADIATION UNITS QuantityOld unitNew SI unit1ActivityCurieBecquerel2ExposureRoentgenCoulomb/kg3Absorbed doseRadGray4Dose equivalentRemSievert5Effective dosemSv Radiation units1) Becquerel (Bq) - Unit of activity (1 Bq = 1 disintegration/second)2) Curie (Ci) - Was unit of activity formerly (1 Bq = 27 picocuries)3) Roentgen - Unit of exposure (1 mrad = 0.001 rad)New SI Units1) Coulomb/kg - Replaced Roentgen2) Gray - Replaced Rad (1 rad = 0.01 Gy)3) Sievert - Replaced Rem (1 Sv = 100 rems)