Ratio of longest wavelengths corresponding to Lyman and Balmer series in hydrogen
Ratio of longest wavelengths corresponding to Lyman and Balmer series in hydrogen spectrum is Options (a) (5/27) (b) (3/23) (c)…
7 years ago
Atoms and Nuclei
A nuclear reaction is given as 4 ₁H¹→₂He⁴+₀e¹+energy Mention the type of reaction.
A nuclear reaction is given as 4 ₁H¹→₂He⁴+₀e¹+energy Mention the type of reaction. Options (a) fusion (b) fission (c) just…
7 years ago
The mass number of nucleus is always
The mass number of nucleus is always Options (a) Equal to atomic number (b) Less than atomic number (c) More…
7 years ago
A heavy nucleus at rest breaks into two fragments which fly off with velocities
A heavy nucleus at rest breaks into two fragments which fly off with velocities in the ratio 8:1. The ratio…
7 years ago
The de-broglie wavelength of an electron in 4th orbit is
The de-broglie wavelength of an electron in 4th orbit is ( where, r= radius of 1st orbit) Options (a) 2πr…
7 years ago
A gas of monoatomic hydrogen is bombarded with a stream of electrons
A gas of monoatomic hydrogen is bombarded with a stream of electrons that have been accelerated from rest through a…
7 years ago
An atom bomb works on the principle of
An atom bomb works on the principle of Options (a) nuclear fission (b) nuclear fusion (c) α-decay (d) β-decay Correct…
7 years ago
Two spherical nuclei have mass numbers 216 and 64 with their radii R₁ and R₂,
Two spherical nuclei have mass numbers 216 and 64 with their radii R₁ and R₂, respectively. The ratio, R₁/R₂ is…
7 years ago
A deutron is bombarded on ₈O¹⁶ nucleus and α-particle is emitted. The product nucleus is
A deutron is bombarded on ₈O¹⁶ nucleus and α-particle is emitted. The product nucleus is Options (a) ₇N¹³ (b) ₅B¹⁰…
7 years ago
The wavelength of kα, X-rays produced by an X-ray tube 0.76Å. The atomic number
The wavelength of kα, X-rays produced by an X-ray tube 0.76Å. The atomic number of the anode material of the…
7 years ago