Atoms and Nuclei [HBCSE Olympiads (Homi Bhabha Centre for Science Education) NSEP (Physics)]: Questions 1 - 2 of 2

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Question 1

Atoms and Nuclei

Appeared in Year: 2016

Question

MCQ▾

The half – life period of a radioactive element is equal to the mean lifetime of another radioactive element Initially both the elements have the same number of atoms. Therefore –

Choices

Choice (4)Response

a.

will decay at the same rate

b.

will decay faster

c.

Data insufficient

d.

will decay faster

Question 2

Atoms and Nuclei

Appeared in Year: 2016

Question

MCQ▾

It is observed that some of the spectral lines in hydrogen spectrum have wavelengths almost equal to those of the spectral lines in Out of the following the transitions in that will make this possible is –

Choices

Choice (4)Response

a.

b.

c.

d.