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a light-emitting diode led connected to a 30 v power supply emits 440 nm blue light the current in the led is 21 ma
light goes from material having a refractive index of n1 into a material with refractive index n2 if the refracted
light is incident normally on the short face of a 30o - 60o -90o prism shown in the figure below a drop of liquid is
light that passes through a series of three polarizing filters emerges from the third filter horizontally polarized
a light rope wrapped around a disk-shaped pulley is pulled with a force of 053 n find the angular acceleration of the
light from a sodium lamp lambda589nm illuminates a narrow slit and is observed on a screen 665 cm behind the slit the
a light source emits two spectral lines one at 552 nm and one at 642 nm if the spectrum is observed using a diffraction
a light travels at 3 x 108 ms and it takes about 8 min for light from the sun to travel to the earth based on this find
1 an 100 g bullet moving at 200 ms goes through a stationary block of wood in 30 x 10-4 s emerging at a speed of 200
light travels from crown glass into air the angle of refraction in air is 60o what is the angle of incidence in the
light with a wavelength of 320 nm shines on a metal surface which emits electrons the stopping potential is measured to
light of wavelength 340 nm is incident on a metal surface and ejects electrons that have maximum speed of 350 x 105 msa
light of wavelength 530 nm is incident on two slits that are spaced 10 mm apart if each of the slits has a width of 010
light of the same wavelength passes through two diffraction gratings one grating has 4000 linescm and the other one has
a lightbulb requires a current of 059 a to emit a normal amount of light if the light is left on for 20 h how many
a lightening bolt hits the west end of a clothesline with a metal core sending 10123 amp through it the line is 200m
a during a lightning flash -12 c of charge moves through a potential difference of 82x107 v determine the change in
a line of charge lies along the x-axis extending from x0m to x3m the line charge densit is a function of the distance
a line charge with a variable linear charge density lambdax cx stretches along the x-axis from x0 to xl the total
a linear accelerator produces a pulsed beam of electrons the pulse current is 055 a and the pulse duration is 014 musa
what is the linear size of the smallest box in which you can confine an electron if you want to know for certain that
linearly polarized light is incident upon a polarizing sheet that has a transmission axis is parallel to the incident
liquid helium is stored at its boiling point 42 k in a spherical can that is separated by an evacuated region of space
a little boy and little girl in a playground are sitting on a large metal disk which is rotating freely at a constant