If two lenses (convex) are in contact with each other, what happens to the ray after refraction?
Download our app for free and get started
When the lens are kept in contact with each other, the power is added
$P = p _1+ p _2$ P has increased : $\frac{1}{\text{f}}$ has increased
f has decreased : the focal point is nearer to the lens.
So, if the ray is coming from infinite, it will bend more and pass from the new focus.
$P = p _1+ p _2$ P has increased : $\frac{1}{\text{f}}$ has increased
f has decreased : the focal point is nearer to the lens.
So, if the ray is coming from infinite, it will bend more and pass from the new focus.
Download our appand get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
Similar Questions
- 1View SolutionList some things that convex lens and concave mirror have in common.
- 2View SolutionWhen an object is placed at a distance of 36cm from a convex lens, an image of the same size as the object is formed. What will be the nature of image formed when the object is placed at a distance of:
- 10cm from the lens?
- 20cm from the lens?
- 3View SolutionDescribe with a suitable diagram, how a convex mirror diverges a parallel beam of light rays. Mark clearly the pole, focus and centre of curvature of convex mirror in this diagram.
- 4View SolutionWhich lens would you prefer to use while reading small letters from a dictionary?
- 5The speed of light in water is $2.25 \times 10^8 m / s$. If the speed of light in vacuum be $3 \times 10^8 m / s$, calculate the refractive index of water.View Solution
- 6View SolutionWhich of the following diagrams shows the ray of light refracted correctly?
- 7View SolutionWhere must the object be placed for the image formed by a converging lens to be:
- Real, inverted and smaller than the object?
- Real, inverted and same size as the object?
- Real, inverted and larger than the object?
- Virtual, upright and larger than the object?
- 8AB and CD, two spherical mirrors, form parts of a hollow spherical ball with its centre at O as shown in the diagram. If arc $\text{AB}=\frac{1}{2}$ arc CD, what is the ratio of their focal lengths? State which of the two mirrors will always form virtual image of an object placed in front of it and why.View Solution
- 9View SolutionAn extended object in the form of an arrow pointing upward has been placed in front of plane mirror. Draw a labelled ray-diagram to show the formation of its image.
- 10View SolutionShow by drawing a ray-diagram that the image of an object formed by a concave lens is virtual, erect and diminished.