Element ²³⁴U has 92 protons and 234 nucleons in its nucleus. It decays by emitting an alpha particle. After the decay it becomes
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(a) ²³²U (b) ²³²Pa (c) ²³⁰Th (d) ²³⁰Ra
Correct […]
A light whose frequency is equal to 6.0 x 10¹⁴ Hz is incident on a metal whose work function is 2 eV. (h= 6.63 x 10⁻³⁴ Js, 1 ev = 1.6 x 10⁻¹⁹ J). The […]
A sample of HCl gas is placed in an electric field of 5 x 10⁴ N/C. The dipole moment of each HCl molecule is 6 x 10⁻³⁰ Cm. The maximum torque that can act on […]
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