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What Type of Lens is Shown in the Diagram on the Right? What Will Happen to the Parallel Rays of Light? Show by Completing the Ray Diagram. - Science

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प्रश्न

 What type of lens is shown in the diagram on the right? What will happen to the parallel rays of light? Show by completing the ray diagram.

उत्तर

 It's a convex lens. The light rays will converge at a point called the focus of the lens.  

 

 

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पाठ 5: Refraction of Light - Exercise 3 [पृष्ठ २४०]

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लखमीर सिंह Physics (Science) [English] Class 10
पाठ 5 Refraction of Light
Exercise 3 | Q 25.1 | पृष्ठ २४०

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

An object 5 cm in length is held 25 cm away from a converging lens of focal length 10 cm. Draw the ray diagram and find the position, size and the nature of the image formed.


 Explain with the help of a diagram, why the convex lens is also called a converging lens.


 What type of images can a convex lens make?


What type of lens is used to correct  

hypermetropia


The diagrams (a) and (b) in Figure below show the refraction of a monochromatic ray of light through a parallel sided glass block and a prism respectively. In each diagram, label the incident, refracted emergent rays and the angle of deviation.

 


A convex lens is placed in water. Its focal length will ______.


The focal length of a lens is positive. In this case, state the kind of lens.


Why do we say that the ‘2F’ and ‘F’ points of a convex lens can be regarded as a sort of ‘turning points’ as far as the nature of the image formed by it is concerned?


For a specific glass lens f = 0.5 m. This is the only information given to the student. Which type of lens is given to him and what is its power?


The above images are that of a specialized slide projector. Slides are small transparencies mounted in sturdy frames ideally suited to magnification and projection since they have a very high resolution and a high image quality. There is a tray where the slides are to be put into a particular orientation so that the viewers can see the enlarged erect images of the transparent slides. This means that the slides will have to be inserted upside down in the projector tray.

To show her students the images of insects that she investigated in the lab, Mrs. Iyer brought a slide projector. Her slide projector produced 500 times enlarged and inverted image of a slide on a screen 10 m away.

a. Based on the text and data given in the above paragraph, what kind of lens must the slide projector have?

b. If v is the symbol used for image distance and u for object distance then with one reason state what will be the sign for `"𝑣"/"𝑢"` in the given case?

c. A slide projector has a convex lens with a focal length of 20 cm. The slide is placed upside down 21 cm from the lens. How far away should the screen be placed from the slide projector’s lens so that the slide is in focus?

OR

c. When a slide is placed 15 cm behind the lens in the projector, an image is formed 3 m in front of the lens. If the focal length of the lens is 14 cm, draw a ray diagram to show image formation. (not to scale)


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