380g
400g
360g
39g
180g
Correct answer is A
R.d = 19, therefore, density = 19gcm-3
mass = velocity x density
= 20 x 19
= 380g
Which of these is a derived unit? ...
The absorption of ink by blotting paper involves ...
Which of the following have the greatest penetrating power? ...
The ratio of tensile stress to tensile strain is known as ...
After three half lifes, the fraction of a radioactive material that has decayed is ...