edurack

Nuclei: NEET 2026

Hard· Size of the Nucleus (Nuclear Density)· +4 / −1

An unknown nucleus has a nuclear density of

2.29\times10^{17}\ \text{kg m}^{-3}

and mass of

19.926\times10^{-27}

kg. Its mass number

A

is approximately: (Take

R_0=1.2\times10^{-15}

m,

4\pi=12.56

)

Practise more Nuclei PYQs

A nucleus of mass number 189 splits into two nuclei having mass number 125 and 64. The ratio of radius of the two daughter nuclei,…
NEET 2022 · Easy
Consider the following nuclear reaction ^238U \, ^234Th + \,^4He Take masses of ^238 U, ^234 Th and ^4 He as 238.050 u, 234.043 u and…
RE-NEET 2026 · Easy
The half life of a radioactive substance is 20 minutes. In how much time, the activity of substance drops to (116)^th of its initial value?
NEET 2023 · Easy
The energy required to break one bond in DNA is 10^-20 J. This value in eV is nearly :
NEET 2020 · Easy
The energy equivalent of 0.5 g of a substance is :
NEET 2020 · Easy
When a uranium isotope ^235_92U is bombarded with a neutron, it generates ^89_36Kr , three neutrons and :
NEET 2020 · Easy