9. A sample of metal weighs 210 gm in air, 180 gm in water and 120 gm in liquid. Then relative density (RD) of
(a) Metal is 3 (b) Metal is 7
(c) Liquid is 3 (d) Liquid is 1/3
Answer-b,c
(7)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)