[10] Wave Optics
Chapter: [10] Wave Optics
Concept: undefined >> undefined
When a beam of light is used to determine the position of an object, the maximum accuracy is achieved, if the light is ______.
[10] Wave Optics
Chapter: [10] Wave Optics
Concept: undefined >> undefined
According to Einstein's photoelectric equation, the plot of the kinetic energy of the emitted photoelectrons from a metal versus the frequency of the incident radiation gives a straight line, whose slope ______.
[11] Dual Nature of Radiation and Matter
Chapter: [11] Dual Nature of Radiation and Matter
Concept: undefined >> undefined
Each photon has the same speed but different ______.
[11] Dual Nature of Radiation and Matter
Chapter: [11] Dual Nature of Radiation and Matter
Concept: undefined >> undefined
A free neutron decays into ______.
[13] Nuclei
Chapter: [13] Nuclei
Concept: undefined >> undefined
Basic materials used in the present solid state electronic devices like diode, transistor, ICs, etc are ______.
[14] Semiconductor Electronics - Materials, Devices and Simple Circuits
Chapter: [14] Semiconductor Electronics - Materials, Devices and Simple Circuits
Concept: undefined >> undefined
Diffusion in a p-n junction is due to ______.
[14] Semiconductor Electronics - Materials, Devices and Simple Circuits
Chapter: [14] Semiconductor Electronics - Materials, Devices and Simple Circuits
Concept: undefined >> undefined
A point positive charge is brought near an isolated conducting sphere (figure). The electric field is best given by ______.
[1] Electric Charges and Fields
Chapter: [1] Electric Charges and Fields
Concept: undefined >> undefined
Figure shows electric field lines in which an electric dipole P is placed as shown. Which of the following statements is correct?
[1] Electric Charges and Fields
Chapter: [1] Electric Charges and Fields
Concept: undefined >> undefined
Electric lines of force ______.
[1] Electric Charges and Fields
Chapter: [1] Electric Charges and Fields
Concept: undefined >> undefined
A hollow sphere of charge does not have electric field at ______.
[1] Electric Charges and Fields
Chapter: [1] Electric Charges and Fields
Concept: undefined >> undefined
At temperature 0K, the germanium behaves as a/an ______.
[3] Current Electricity
Chapter: [3] Current Electricity
Concept: undefined >> undefined
A strip of copper and another of germanium are cooled from room temperature to 80 K. The resistance of ______.
[3] Current Electricity
Chapter: [3] Current Electricity
Concept: undefined >> undefined
Nichrome or Manganin is widely used in wire bound standard resistors because of their ______.
[3] Current Electricity
Chapter: [3] Current Electricity
Concept: undefined >> undefined
If we double the radius of a coil keeping the current through it unchanged, then the magnetic field at any point at a large distance from the centre becomes approximately.
[4] Moving Charges and Magnetism
Chapter: [4] Moving Charges and Magnetism
Concept: undefined >> undefined
A charged particle moving in a uniform magnetic field and losses 4% of its kinetic energy. The radius of curvature of its path changes by ______.
[4] Moving Charges and Magnetism
Chapter: [4] Moving Charges and Magnetism
Concept: undefined >> undefined
A current is passed through a straight wire. The magnetic field established around it has its lines of force ______.
[4] Moving Charges and Magnetism
Chapter: [4] Moving Charges and Magnetism
Concept: undefined >> undefined
Magnetic field at the centre of a circular coil of radius r, through which a current I flows is ______.
[4] Moving Charges and Magnetism
Chapter: [4] Moving Charges and Magnetism
Concept: undefined >> undefined
The mutual inductance of a pair of coils is 0.75 H. If current in the primary coil changes from 0.5 A to zero in 0.01 s, find average induced e.m.f. in secondary coil ______.
[6] Electromagnetic Induction
Chapter: [6] Electromagnetic Induction
Concept: undefined >> undefined
The mutual inductance between two coils depends on ______.
[6] Electromagnetic Induction
Chapter: [6] Electromagnetic Induction
Concept: undefined >> undefined
