Which of the following is used for shielding radioactive ...
Which of the following is used for shielding radioactive fallout?
Aluminum
Lead
Iron
Plastic
Wood
Correct answer is B
No explanation has been provided for this answer.
The ratio of the coefficient of linear expansion of two metals ∝1/∝2 is 3:4. If, when heated thr...
A 20kg mass is to be pulled up a slope inclined at 30° to the horizontal. If efficiency of ...
Which of the following are True for α-decay. i. mass number, decrease by four. ii. Atom...
Which of the following are transverse waves? I. Ripples on water II. Sound waves in air III. Li...
I.Chemical II.Sound III.Electricity Which of the above forms of energy can directly be converted ...