There are three bulbs of 60W 100W and 200W which bulb has thickest filament ?
There are three bulbs of 60W 100W and 200W which bulb has thickest filament ?
A. 100W
B. 200W
C. 60W
D. all
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Maximum frequency in the spectrum from X-ray tube is directly proportional to the______________?
Maximum frequency in the spectrum from X-ray tube is directly proportional to the______________?A. Number of incident electron i.e. filament current
B. The kinetic energy of the incident electron i.e. the potential difference through which they are accelerated
C. The soft target which can easily emit electrons
D. All of above are correctElectric current in a solid metal conductor is caused by the movement of what ?
Electric current in a solid metal conductor is caused by the movement of what ?A. Protons
B. Electrons
C. Metal atoms
D. Metal ionsElectric current in a solid metal conductor is caused by the movement of electric charge. An electric current is the flow of electric charge. An electron current, the flow of electrons, contributes to an electric current since the electron ‘carries’ negative electric charge.
In double slit experiment if one of the two slit is covered then________________?
In double slit experiment if one of the two slit is covered then________________?A. no interference fringes are observed
B. no diffraction fringes are observed
C. no fringes observed
D. interference pattern not disturbedIn half-wave rectification the output D.C. voltages is obtained across the load for_______________?
In half-wave rectification the output D.C. voltages is obtained across the load for_______________?A. The negative half cycle of A.C.
B. The positive half cycle of A.C.
C. The positive and negative half cycles
D. Either positive or negative half of A.C.In Compton scattering, the change in wavelength is maxed if_______________?
In Compton scattering, the change in wavelength is maxed if_______________?A. The angle of scattering is 90°
B. The angle of scattering is 60°
C. The angle of scattering is 180°
D. The angle of scattering is 0When the amplitude of a wave becomes double its energy become_________________?
When the amplitude of a wave becomes double its energy become_________________?A. Double
B. Four times
C. One half
D. None time