Question
Which of the following force holds protons and neutrons
inside the nucleus of an atom?Solution
The known forces of nature can be divided into four- gravity, electromagnetism, weak nuclear force and strong nuclear force. It is the strong nuclear force which holds protons and neutrons together inside an atom. Whereas weak nuclear force is responsible for the existence and structure of nuclei including radioactivity and nuclear fusion. Hence, option C is correct.
Let (Xi, I ≥ 1} be independent and identically distributed random variables with P(Xi =1) = p = 1-P(Xi = 0), Sn = ∑ni = 1 X i . The dist...
If the odds in favour of any random event A are 5 : 6, then the odds against the event are:
If Z1, Z2,…Zn are n independent standard normal variates, then Σni=1 Z2i will follow:
For the study purpose, the mean of the observations is 148 gm and standard deviation is 17.4 gm. Approximately, the coefficient of variation equals to:
Which of the following is NOT an approach for assigning the probability of the event?
The variation among the observations of each specific class is known as:
If ten coins are tossed simultaneously, then the probability of getting at most I head is:
The arithmetic mean of the following frequency distribution of number of accidents X on week working days is:
X: �...
Which of the following approaches does multiplicative model have for the component of Time series Secular trend (7). Seasonal variation (S), Cyclical f...
For the frequency distribution of X number of grammatical mistakes per line is as follows.
X: 0 ...
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