Electromagnetic WavesHard
Question
A radioactive sample at any instant has its disintegration rate 5000 disintegrations per minute. After 5 minutes, the rate is 1250 disintegrations per minute.
Then, the decay constant (per minute) is
Then, the decay constant (per minute) is
Options
A.0.4 In 2
B.0.2 In 2
C.0.1 In 2
D.0.8 In 2.
= 0.4 In 2.More Electromagnetic Waves Questions
A radioactive sample disintegrates by 10% during one month. How much fraction will disintegrate in four months :-...The largest wavelength in the ultraviolet region of the hydrogen spectrum is 122 nm. The smallest wavelength in the infr...Electromagnetic waves is invented by :-...Two towers on top of two hills are 40 km apart. The line joining them passes 50 m above a hill halfway between the tower...In the given diagram, a line of force of a particular force field is shown. Out of the following options, it can never r...