The control rods used in a nuclear reactor can be made up of
The control rods used in a nuclear reactor can be made up of Options (a) graphite (b) cadmium (c) uranium…
8 years ago
Physics
In Moseley’s law √ν=a(z-b), the values of the screening constant for K-series
In Moseley's law √ν=a(z-b), the values of the screening constant for K-series and L-series of X-rays are respectively Options (a)…
8 years ago
The wavelength of light emitted from second orbit to first orbit in a hydrogen atom is
The wavelength of light emitted from second orbit to first orbit in a hydrogen atom is Options (a) 1.215x10⁻⁷ m…
8 years ago
The sodium nucleus ₁₁Na²³ contains
The sodium nucleus ₁₁Na²³ contains Options (a) 11 electrons (b) 12 protons (c) 23 protons (d) 12 neutrons Correct Answer:…
8 years ago
The Rutherford scattering experiment proves that an atom consists of
The Rutherford scattering experiment proves that an atom consists of Options (a) a sphere of positive charge in which electrons…
8 years ago
If, an electron in hydrogen atom jumps from an orbit of level n=3 to an orbit
If, an electron in hydrogen atom jumps from an orbit of level n=3 to an orbit of level n=2, emitted…
8 years ago
For principal quantum number n=3, the possible values of orbital quantum number
For principal quantum number n=3, the possible values of orbital quantum number l are Options (a) 1,2,3 (b) 0,1,2,3 (c)…
8 years ago
The ionisation energy of hydrogen is 13.6 eV. The energy of the photon released
The ionisation energy of hydrogen is 13.6 eV. The energy of the photon released when an electron jumps from the…
8 years ago
The first line in Lyman series has wavelength λ. The wavelength
The first line in Lyman series has wavelength λ. The wavelength of the first line in Balmer series is Options…
8 years ago
The excitation potential of hydrogen atom in the first excited state is
The excitation potential of hydrogen atom in the first excited state is Options (a) 13.6 V (b) (-13.6 V) (c)…
8 years ago