Optics Answers

what color will appear when green light passes through a red glass?

A man wants to get a picture of a zebra.He photographed a white donkey after fitting a glass,with black stripes on to the lens of his camera.What photonwill he get?Explain.

A CLOCK HAVING MARKS INSTEAD OF NUMBERS ON ITS DIAL APPEARS TO INDICATE 4.35 WHEN VIEWED THROUGH A MIRROR.WHAT IS THE CORRECT TIME?

A MAN IS RUNNING AWAY FROM A PLANE MIRROR AT THE RATE OF 10 m/s. WITH WHAT SPEED IS HE RECEDING FROM HIS OWN IMAGE?

Find the effective power of the combination of two lenses in contact having powers (i) +5D and +3D (ii) +5D and -3D.

If a yellow light with a wavelength of 540nm shines on a double slits cuts 0.01mm apart, determine what angle you should look away from central fringe to see the second order fringe?

A concave mirror of radius 40cm lies on a horizontal table and water is filled in it upto a height 5cm.A small dust particle floats on th water surface at a point 'P' vertically above the point of contact of the mirror with the table.Locate the image of the dust particle as seen from a point directly above it.The refractive index of water is 1.3

1.
A combination of a converging and a diverging lens f
orms a real image of an object. How will the
position of the image change when the positions of th
e two lenses are interchanged? Which of
the lenses is of greater power?

find the effective power of the combination of two lenses in contact having powers (1) +5D and +3D (2) +5D and -3D