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प्रश्न
When an object is kept within the focus of a concave mirror, an enlarged image is formed behind the mirror. This image is :
पर्याय
real
inverted
virtual and inverted
virtual and erect
उत्तर
When an object is kept within the focus of a concave mirror, an enlarged image is formed behind the mirror. This image is virtual and erect.
संबंधित प्रश्न
If an object is placed 21 cm from a converging lens, the image formed is slightly smaller than the object. If the object is placed 19 cm from the lens, the image formed is slightly larger than object. The approximate focal length of the lens is ______.
A ray of light is going towards the focus of a concave lens. draw a ray diagram to show the path of this ray of light after refraction through the lens.
Construct ray diagrams to illustrate the formation of a virtual image using a diverging lens.
A concave lens, if kept at a proper distance from an object, can form its real image.
How will you differentiate between a convex and a concave lens by looking at
- a distant object,
- a printed page?
An object of height 4 cm is kept at a distance of 30 cm from a concave lens. Use lens formula to determine the image distance, nature and size of the image formed if focal length of the lens is 15 cm.
Define the principal focus of a concave lens.
Identify the device used as a spherical mirror or lens in following case, when the image formed is virtual and erect in case.
Object is placed between infinity and device, image formed is diminished and between focus and optical centre on the same side as that of the object.
Distinguish between:
Concave Lens and Convex Lens
A parallel, oblique beam of light falls on a concave lens. Draw a diagram to show refraction of light through the lens.
