The time period of a simple pendulum in a lift descending with constant acceleration g is
The time period of a simple pendulum in a lift descending with constant acceleration g is Options (a) T=2π√l/g (b)…
7 years ago
Physics
Which radiations are used in tratement of muscles ache?
Which radiations are used in tratement of muscles ache? Options (a) Ultraviolet (b) Infrared (c) Microwave (d) x-rays Correct Answer:…
7 years ago
An electromagnetic wave of frequency v = 3.0 MHz passes from vacuum into
An electromagnetic wave of frequency v = 3.0 MHz passes from vacuum into a dielectric medium with relative permittivity ε…
7 years ago
The ratio of amplitude of magnetic field to the amplitude of electric field for
The ratio of amplitude of magnetic field to the amplitude of electric field for an electromagnetic wave propagating in vacuum…
7 years ago
The electric field associated with an e.m. wave in vacuum is given by
The electric field associated with an e.m. wave in vacuum is given by E = i 40 cos (kz -…
7 years ago
The decreasing order of wavelength of infrared, microwave, ultraviolet and gamma
The decreasing order of wavelength of infrared, microwave, ultraviolet and gamma rays is Options (a) microwave, infrared, ultraviolet, gamma rays…
7 years ago
The electric and magnetic field assiciated with an E.M. wave
The electric and magnetic field associated with an E.M. wave, propagating along the +z axis, can be represented by Options…
7 years ago
which of the following statement is false for the properties of electromagnetic waves?
which of the following statement is false for the properties of electromagnetic waves? Options (a) Both electric and magnetic field…
7 years ago
The electric field part of an electromagnetic wave in a medium is represented by
The electric field part of an electromagnetic wave in a medium is represented by Ex = 0 Ey = 2.5…
7 years ago
If c is the velocity of light in free space, the time taken by light to travel
If c is the velocity of light in free space, the time taken by light to travel a distance x…
7 years ago