Question
A ray of light from the object parallel to principal
axis of a concave lens, after refraction appears to diverge from which point on the same side of the lens?Solution
Principal focus : A ray of light from the object, parallel to the principal axis, after refraction from a convex lens, passes through the principal focus on the other side of the lens. • In case of a concave lens, the ray appears to diverge from the principal focus located on the same side of the lens.
- Find the wrong number in the given number series.
4, 6, 9, 13, 18, 25 Direction: Find the wrong number in given number series.
1102, 1140, 1186, 1240, 1318, 1412.
120, 140, 178, 232, 300, 360
Find the wrong number in the given number series.
2, 6, 24, 121, 720, 5040
186, 179, 170, 162, 146, 131, 114
Find the wrong no in the given number series.
25, 123, 341, 727, 1329, 2199
231, 241, 233, 239, 235, 243
Find the wrong number in given number series.
1500, 1450, 1390, 1350, 1240, 1150
- Find the wrong number in the given number series.
600, 539, 488, 447, 408, 395 - Find the wrong number in the given number series.
2, 5, 9, 14, 20, 28