A rectangular copper coil is placed in a uniform magnetic field of induction 40 mT
A rectangular copper coil is placed in a uniform magnetic field of induction 40 mT with its plane perpendicular to…
8 years ago
Questions
Light is emitted when
Light is emitted when Options (a) Electron make an transition from higher orbit to lower orbit (b) Electron make an…
8 years ago
When photons of energy hν fall on an aluminium plate (of work function E₀),
When photons of energy hν fall on an aluminium plate (of work function E₀), photoelectrons of maximum kinetic energy K…
8 years ago
Cathode rays are produced when the pressure is of the order of
Cathode rays are produced when the pressure is of the order of Options (a) 2 cm of Hg (b) 0.1…
8 years ago
A battery of e.m.f. E and internal resistance r is connected to an external resistance
A battery of e.m.f. E and internal resistance r is connected to an external resistance R the condition for maximum…
8 years ago
A galvanometer having internal resistance 10Ω requires 0.01 A for a full scale
A galvanometer having internal resistance 10Ω requires 0.01 A for a full scale deflection. To convert this galvanometer to a…
8 years ago
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)…
8 years ago
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…
8 years ago
A L-C-R circuit with L=1.00 mH, C=10μF and R=50Ω, is driven with 5 V AC voltage.
A L-C-R circuit with L=1.00 mH, C=10μF and R=50Ω, is driven with 5 V AC voltage. At resonance, the current…
8 years ago
The difference in the lengths of a mean solar day and a sidereal day is about
The difference in the lengths of a mean solar day and a sidereal day is about Options (a) 1 min…
8 years ago