The alternating current in a circuit is given by I=50 sin314t. The peak value
The alternating current in a circuit is given by I=50 sin314t. The peak value and frequency of the current are…
7 years ago
JK2013
A bar magnet of pole strength 10 A-m is cut into two equal parts breadthwise.
A bar magnet of pole strength 10 A-m is cut into two equal parts breadthwise. The pole strength of each…
7 years ago
If two slits in Young’s experiment are 0.4 mm apart and fringe width on a screen
If two slits in Young's experiment are 0.4 mm apart and fringe width on a screen 200 cm away is…
7 years ago
A magnifying glass of focal length 5 cm is used to view an object by a person
A magnifying glass of focal length 5 cm is used to view an object by a person whose smallest distance…
7 years ago
A 50Hz AC signal is applied in a circuit of inductance of (1/π)H and resistance 2100Ω
A 50Hz AC signal is applied in a circuit of inductance of (1/π)H and resistance 2100Ω. The impedance offered by…
7 years ago
According to Bohr model of hydrogen atom, only those orbits are permissible
According to Bohr model of hydrogen atom, only those orbits are permissible which satisfy the condition Options (a) mv=nh (b)…
7 years ago
A 1m long wire of diameter 0.31 mm has a resistance of 4.2Ω. If it is replaced by
A 1m long wire of diameter 0.31 mm has a resistance of 4.2Ω. If it is replaced by another wire…
7 years ago
A hollow sphere of radius 0.1m has a charge of 5×10⁻⁸C. The potential
A hollow sphere of radius 0.1m has a charge of 5x10⁻⁸C. The potential at a distance of 5cm from the…
7 years ago
A conductor of length 5 cm is moved parallel to itself with a speed of 2 m/s,
A conductor of length 5 cm is moved parallel to itself with a speed of 2 m/s, perpendicular to a…
7 years ago
24 cells of emf 1.5 V each having internal resistance of 1 ohm are connected
24 cells of emf 1.5 V each having internal resistance of 1 ohm are connected to an external resistance of…
7 years ago