Popular Optics Questions

as eureka stated lets put up some problemss that might be of good help for jee 2009 revision aspect. i just did not want to mix it up with his thread and make it go unnoticed like my chemistry hub 1}show that the focal length ...

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

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Q1 If μo and εo represent permeablity and permittivity of vacuum and μ and ε be the permittivity and permeablity of medium,then calculate refractive index of medium. Q2 In an npn transistor circuit,the collector current i ...

A lens of focal length 20.0cm and aperture radius 2.0cm is placed at a distance 30.0cm from a point source of light.On the other side a screen is placed at a distance 50.0cm from the lens.The radius of spot of light formed on ...

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

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A convex lens of focal length 10 cm is placed coaxially 5cm away from a concave lens of focal length 10cm. If an object is placed 30cm in front of convex lens, find the position of final image formed by combined system. me ge ...

*Image* Assertion:Powernet=0.66D Reason:Pnet=P1+P2 ...

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 ...

when a white light is incident on a convex lens d colur of light which is less deviated from optical axis is ive got it as red but d ans is violet can nebody give d perfect xplanation for dat ...

How would the diffraction pattern of a single slit be affected when the monocromatic source of light is replaced by white light? ...

for 2 coherent sources , I net =(√I1 + √I2)2 wen path diff = 0 now take these 2 and separate them like interference exp , you get max , min but avg intensity remains I1 + I2 now if u put these 2 sources together , ...

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 ...

A object is kept at a point (40,20√3) in front of a concave mirror of radius=20. find magnification of image. (its not just 1/v+1/u=1/f !!!!) ...

1)Why the speed of the image on an object moving with constant speed increases as it moves nearer and nearer to a stationary mirror? 2)How to make use of sign convention in ray optics while solving numericals? ...

Q1.) in a concave mirror, distance of an object from focus : 4 cm. ---------------its image from focus : 9 cm. find the focal distance.. (give the sign as well) (time : 1 min). ...

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Photons of energy 5e.V are incident on cathode.Electrons reaching the anode have kinetic energies varying from 6e.V to 8e.V.wat is the workfunction of the metal.Electrons r acc through a potential difference of 5V *Image* ...

*Image* a ray incident at an angle 53° on a prism emerges at an angle of 37° as shown .if the angle of incidence is made 50° then value of angle of emergence a 35 b 42 c 40 d 38 ...

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 ...

ADDED Q2), Q3) Q1) radius of curved road on national high way is R and width of the road is ' b ' . the outer edge of the road is raised by a height of ' h ' with respect to inner edge so that the car with velocity ' v ' can ...

find the resistance between the points a and b. please show me the full solution *Image* ...

Q1) A 35 mm slide with a 24 mm*36 mm picture is projected on a screen placed 12 m from the slide.The image of the slide picture on the screen measures 1.0 m *1.5 m.Determine the location of the projection lens, and its focal ...

What will happen to angle of min deviation in case of prism if we change frequency of light.. ...

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When the voltage applied to an X-ray tube is increased from V1 = 40 kV to 200 kV the wavelength interval between the Kα line and the short-wave cut off frequency of the continuous X-ray spectrum increases by a factorξ = 2. ...

An FM signal has a resting frequency of 105 Mhz and highest frequency of 105.03 Mhz ,when modulated by a signal. Then the carrier swing is? ...

*Image* *Image* *Image* circled questions are doubts ticked answers are my answers circles options are fiitjee answers ...