Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å
Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å. Number of spectral lines in the…
7 years ago
AIPMT2014
Following figures show the arrangement of bar magnets in different configurations
Following figures show the arrangement of bar magnets in different configurations. Each magnet has magnetic dipole moment m. Which configuration…
7 years ago
Dependence of intensity of gravitational field (E) of earth with distance(r)
Dependence of intensity of gravitational field (E) of earth with distance(r) from centre of earth is correctly represented by Options…
7 years ago
Copper of fixed volume V is drawn into wire of length l. When this wire is subjected
Copper of fixed volume V is drawn into wire of length l. When this wire is subjected to a constant…
7 years ago
Certain quantity of water cools from 70⁰ C to 60⁰C in the first 5 minutes and to 54⁰C
Certain quantity of water cools from 70⁰ C to 60⁰C in the first 5 minutes and to 54⁰ C in…
7 years ago
A transformer having efficiency of 90% is working on 200 V and 3kW power supply
A transformer having efficiency of 90% is working on 200 V and 3kW power supply. If the current in the…
7 years ago
A thin semicircular conducting ring (PQR) of radius r is falling with its plane
A thin semicircular conducting ring (PQR) of radius r is falling with its plane vertical in a horizontal magnetic field…
7 years ago
A thermodynamic system undergoes cyclic process ABCDA as shown in figure
A thermodynamic system undergoes cyclic process ABCDA as shown in figure. The work done by the system in the cycle…
7 years ago
A system consists of three masses m₁, m₂ and m₃ connected by a string passing
A system consists of three masses m₁, m₂ and m₃ connected by a string passing over a pulley P. The…
7 years ago
A speeding motorcyclist sees traffic jam ahead him. He slows down to 36 km per hour
A speeding motorcyclist sees traffic jam ahead him. He slows down to 36 km hour⁻¹. He finds that traffic has…
7 years ago