Recently Active Optics Questions

How many images are formed when this lens is used? No portion of the lens is opaque [4] *Image* ...

A Glass Slab ( refractive index=μ ) of height "h" is silvered at bottom surface. There is an air bubble "d" distance below the top surface. The observer is vertically above the bubble. The apparant distan ...

k luk at this: for an equiconvex lens, R=2f......(1) Also by lens makers formula, 1/f= (μ-1) [1/R + 1/R] = (μ-1)[2/R] = (μ-1)[2/2f] = (μ-1)[1/f] => (μ-1) = 1 i.e μ=2 !!!!!! what was my ...

Why can't two independent sources of light be coherent? ...

plz guys i'm literally dumb in optics.. suggest me... ...

A screen is placed at a certain distance from a narrow slit which is illuminated by a parallel beam of monochromatic light of wavelength λ. if d is the width of the slit,what is the angular width of the central maximum? ...

While deriving mirror and lens formula, we substitute for obj and img distance with proper sign following the carteian sign convention i.e. we have taken sign convention into consideration while deriving the formulae. But whi ...

*Image* A point object is moving with a speed v before an arrangement of two mirrors as shown in figure.Find the velocity of image in mirrorM ...

According to one of the most popular theories of the origin of universe, the Big Bang theory, the universe began as a result of a colossal explosion of matter, antimatter and energy. After the big bang, everything was chaotic ...

consider a crude generalization for bohr theory for helium atom which assumes dat 2 elec are in same orbit but aiways on opp side of nucleous. bohr radius of elec in hydrogen atom=a energy in ground state=e fin 1. rad ...

Prove rigorously that for an isoceles prism a ray of light falling on one side will suffer minimum deviation when angle of incidence= angle of emergence .. ...

A mark is made and a glass slab is placed over it. What will happen when a ray of light from this mark strikes a vertex of the slab? ...

please dont get afraid by the size of the question beleive me it is easy (give it a thought cmon)!! *Image* ABOVE THE background neede to solve this one is given the two questions are given below *Image* i will tell the sourc ...

Is a doped semi-conductor electrically neutral w.r.t. the original semi-conductor as it has one extra electron or hole per atom in it's lattice? ...

If 7 colors of white light have different refractive indices in a medium then they should have different refractive indices in air as well. Then why don't we see splitting of colors in air. ...

how should be a pencil held above a table to obtain a sharp shadow if the source of light is a daylight lamp in the form of a long tube secured on the ceiling. ...

how can a real landscape on a photograph be distinguished from its reflection in quiet water? ...

an objct and a screen r mounted on an optical bench and a convergin lens is placed bewtn so dat a shrp image is recicvd on d screen . d linear mag of d image is 2.5 d lenx is nw moved 30 cm nearer the screen and d shrp imgae ...

a convex lens is placed betwn an object and d screen wich r a fix d distnce apart for one position of d elns the magnification of d image is m1 wich is obtaind on d screen , when d lens is moved by a idstnce d the magnificati ...

a 5D lens forms a virtual image wich is 4 tyms d object placed perpendicular on d principal axis of d lenx find d distnce of d objct frm d lens ...

*Image* in autumn when trees have shed all their leaves,one can frequently see shadows from two parallel branches.the lower branch produces a sharp dark shadow and the upper brancha broder and lighter one.if two such shadows ...

a monochromatic flux from a remote source with a wavelength λ is almost normally incident on a thin glass wedge.a screen is placed at a distance `d` from the wedge.a lens with a focal length `f` projects the interference pat ...

shw dat if a collison betwn a fast elctron and a elctron @ rest is to lead to d production of an elctron positron pair then d kinectic enrgy of d fast elctron must b at least 6mc^2 wer m is d mass of eclrton and c is d speed ...

any1 knows poro prism i got a question poro prism is equilateral prism right angula prism any angle prism i have red noyhin nout thia poro prism reply>>? ...

Please xplain the mechanism of interference through thin films. ...

How could you make a lens to focus sound waves?consider waves in air and water ...

A thin transparent plastic bag has the shape of a converging lens when inflated with air.How does it behave optically when placed in water? ...

Why is everyone crying about the experiment being conducted on the big bang theory? is it why media is shouting and crying.. i think this is all superstition people.. what do you think? ...

In aerial mapping a camera uses a lens with a 100cm focal lenght.Find the height at which the airplane must fly,so that the photogrpah of a 1 km long strip on the ground fits excatly on the 20 cm long flimstrip of the camera. ...

When any coloured light passes through another coloured translucent or transparent medium it takes the colour of the medium. why?? pls explain in details! ...