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Optics
A 1-Gbit/s signal has an average power of 1μW at the receiver. What is the average energy in each pulse?
Optics
why r newtons ring circular in shape n how they r produced????
Optics
in short basic mechanism of laser
Optics
A 9 cm high image of an object is formed on a screen by a convex lens. When the lens is displaced towards the screen, again a 4 cm high image is formed on the screen. what is the height of the object? .....a)6cm
b)6.25cm
c)6.5cm
d)non of these
b)6.25cm
c)6.5cm
d)non of these
Optics
a convergent beam is incident on a convex lens L as shown in the figure( http://img715.imageshack.us/img715/1824/63553836.png).....the image formed is
a) real,erect and enlarged.
b) real,erect and diminished.
c) virtual,erect and diminished.
d) virtual,erect and enlarged.
a) real,erect and enlarged.
b) real,erect and diminished.
c) virtual,erect and diminished.
d) virtual,erect and enlarged.
Optics
How many images formed by plane mirrors fixed at two adjacent walls and another on roof ? a) 1 b) 3 c)7 d)11.........and why plz ??
Optics
the lens shown in the figure(a convex lens that is divided into 4 parts in width) is made of different materials . (part 1,4 made of a material. part 2 , 3 made of another)....a point object is placed on the axus (between 2,3 parts) how many images the object will form??
Optics
tell me how to derive lens maker equation.
Optics
we need to coat a layer of refractive index 1.25 on a glass plate of refractive index 1.5.the wavelength of light incident is 600nm such that reflection is eleminated.find the thickness of the coat.
Optics
can a convex mirror ever form real image? Justify your answer.
