250days
150days
300days
200days
Correct answer is A
Since 1/32, is the fraction left of any radioactive material after 5half lives, that is: 1/32= (1/2)5. Thus if a half life is 50 days, 5 half lives will be 50 x 5= 250 days
A surface in the path of an advancing wave on which all the particles are in the same state of distu...
What is the potential difference between X and Y in the diagram above if the battery is of negligibl...
In a resonance tube experiment, if the fundamental frequency of the vibrating air column is 280Hz, t...
Transistors are used for the? ...
An object of mass 2 kg moves with a uniform speed of 10ms-1 for 5s along an straight path. Determine...
A mercury-in-glass thermometer read 4cm at ice point and 29cm at steam point. Calculate the temperat...
Two rays of light from a point below the surface of water are equally inclined to each other at 60o ...
Rainbow formation is a natural phenomenon illustrating that white light ...
An aeroplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it i...
A solid metal cube of side 10 cm is heated from 10oC to 60oC. lf the linear expansivity of the meta...
Personality Test
Numerical Reasoning Questions and Answers
Microsoft Office Questions and Answers
Spatial Reasoning Questions and Answers
Typing Speed and Accuracy Test
Puzzles Questions and Answers
Nigeria General Knowledge Questions and Answers
Verbal Reasoning Questions and Answers
Logical Reasoning Questions and Answers
Quantitative Reasoning Questions and Answers
Abstract Reasoning Questions and Answers
Data Interpretation Questions and Answers
Situational Judgement Questions and Answers
See all →