Solar radiation is
Solar radiation is Options (a) transverse electromagnetic wave (b) longitudinal electromagnetic wave (c) both longitudinal and transverse electromagnetic waves (d)…
7 years ago
Physics
The ‘rad’ is the correct unit used to report the measurement of
The 'rad' is the correct unit used to report the measurement of Options (a) the rate of decay of radioactive…
7 years ago
Ionization potential of hydrogen atom is 13.6 eV. Hydrogen atoms in the ground state
Ionization potential of hydrogen atom is 13.6 eV. Hydrogen atoms in the ground state are excited by monochromatic radiation of…
7 years ago
The fossil bone has a ¹⁴C:¹²C ratio, which is [1/16] of that in a living animal
The fossil bone has a ¹⁴C:¹²C ratio, which is [1/16] of that in a living animal bone. If the half-life…
7 years ago
₉₂U²³⁴ has 92 protons and 238 nucleons. It decays by emitting an alpha particle
₉₂U²³⁴ has 92 protons and 238 nucleons. It decays by emitting an alpha particle and becomes Options (a) ₉₂U²³⁴ (b)…
7 years ago
A mixture consists of two radioactive materials A₁ and A₂ with half lives of 20s
A mixture consists of two radioactive materials A₁ and A₂ with half lives of 20s and 10s respectively. Initially the…
7 years ago
Consider two nuclei of the same radioactive nuclide. One of the nuclei was created
Consider two nuclei of the same radioactive nuclide. One of the nuclei was created in a supernova explosion 5 billion…
7 years ago
Curie is the unit of
Curie is the unit of Options (a) half life period (b) decay constant (c) radioactivity (d) nuclear force Correct Answer:…
7 years ago
The half life of radioactive isotope ‘X’ is 50 years. It decays to
The half life of radioactive isotope 'X' is 50 years. It decays to another element 'Y' which is stable. The…
7 years ago
A radioactive substance has a half-life of four months. Three-fourth of substance
A radioactive substance has a half-life of four months. Three-fourth of substance will decay in Options (a) 3 months (b)…
7 years ago