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An object 5 cm high is held 25 cm away from a converging lens of focal length 10 cm. Find the position, sizeand nature of the image formed. Also
+15.66cm
2.16.6cm
3.+20cm
4.-16.6cm
A converging lens of focal length 5 cm is placed at a distance of 20 cm from a screen. How far from the lens should an object be placed so as to form its real image on the screen ?
-10cm
2.-5cm
3.15cm
4.6.6cm
The incident ray, the normal and the reflected ray all lie on different planes.
A person unable to see properly a car at distance of 100 m ,what type of lense he required?
Concave
2.Convex
3.Lense with no power
4.Plano convex
You are given water, mustard oil, glycerine and kerosene. In which
of these media a ray of light incident obliquely at same angle would
bend the most?
Kerosene
2.Water
3.Mustard oil
4.Glycerine
1. white light is passed through a prism of angle 5degree . If the refractive inices for red and blue colours are 1.641 and 1.659 respectively , calculate the angle of dispersion between them
A)0.090º
2.B)0.080º
3.C)0.009º.
4.D)0.10º
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