Question
Which of the following is an alpha particle which is
emitted in radioactivity?Solution
Alpha particle consists of a helium atom having 2 electrons, 2 protons and 2 neutrons. Radioactive decay (also known as nuclear decay or radioactivity) is the process by which an unstable atomic nucleus loses energy by emitting radiation, such as an alpha particle, beta particle with neutrino. A material containing such unstable nuclei is considered radioactive Hence, option A is correct.
Calculate 50% of the L.C.M of 208 and 216.
Find the GCD of 1.08, 0.36 and 0.9.
Train X running at a speed of 32 km/hr crosses train Y in 20 seconds. Find the speed of train Y (in km/hr), if the sum of the length of train X and Y is...
Three bells ring at regular intervals of 28 seconds, 60 seconds, and 84 seconds, respectively. Over a span of 10 minutes, how many times will all three ...
The LCM of two numbers is 4 times of their HCF. The sum of LCM and HCF is 320. If one of the number is 256, then the other number is:
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If total number of factors of 3,240 is 'x', then find the value of (x - 3)(x + 5).
LCM and HCF of two numbers are respectively 3 and 18. If one of them is 9, find the other number.
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