Element ²³⁴U has 92 protons and 234 nucleons in its nucleus. It decays by
Element ²³⁴U has 92 protons and 234 nucleons in its nucleus. It decays by emitting an alpha particle. After the…
7 years ago
Physics
The total energy of an electron in the first excited state of hydrogen atom
The total energy of an electron in the first excited state of hydrogen atom is about -3.4 eV. Its kinetic…
7 years ago
If alternating source of primary coil on transformer is replaced by a Laclanche cell
If alternating source of primary coil on transformer is replaced by a Laclanche cell, the induced e.m.f in secondary coil…
7 years ago
A perfect gas at 27° C is heated at constant pressure to 327° C. If original volume of gas
A perfect gas at 27° C is heated at constant pressure to 327° C. If original volume of gas at…
7 years ago
In a circuit, 5% of total current passes through a galvanometer. If resistance
In a circuit, 5% of total current passes through a galvanometer. If resistance of the galvanometer is G, the value…
7 years ago
A point source is kept at a distnace 1000m has an illumination I. To change the illumination
A point source is kept at a distnace 1000m has an illumination I. To change the illumination to 16I, the…
7 years ago
The excess pressure inside one soap bubble is three times that inside a second soap bubble
The excess pressure inside one soap bubble is three times that inside a second soap bubble, then the ratio of…
7 years ago
Three cells, each of e.m.f 1.5 V and internal resistance 1 ohm are connected in parallel
Three cells, each of e.m.f 1.5 V and internal resistance 1 ohm are connected in parallel. What would be the…
7 years ago
Two forces of magnitude 8N and 15N respectively act at a point so as to make the resultant force
Two forces of magnitude 8N and 15N respectively act at a point so as to make the resultant force 17N.…
7 years ago
When volume of a system is increased two times and temperature is decreased
When volume of a system is increased two times and temperature is decreased to half of its initial temperature, then…
7 years ago