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प्रश्न
A concave lens forms a magnified or diminished image depending on the distance of an object from it.
पर्याय
True
False
उत्तर
This statement is false.
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संबंधित प्रश्न
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.
Fill in the following blank with suitable word:
A convex lens .................. rays of light, whereas a concave lens .................. rays of light.
Fill in the following blank with suitable word:
Lenses refract light to form images: a..................... lens can form both real and virtual images, but a diverging lens forms only ...................... images.
How would a pencil look like if you saw it through
a concave lens Is the image real or virtual?
Only one of the following applies to a concave lens. This is:
(a) focal length is positive
(b) image distance can be positive or negative
(c) height of image can be positive or negative
(d) image distance is always negative
A person cannot see distant objects clearly. His vision can be corrected by using the spectacles containing:
(a) concave lenses
(b) plane lenses
(c) contact lenses
(d) convex lenses
A lens forms an upright and diminished image of an object irrespective of its position. What kind of lens is this?
An object is placed at a distance 24 cm in front of a convex lens of focal length 8 cm.
(i) What is the nature of the image so formed?
(ii) Calculate the distance of the image from the lens.
(iii) Calculate the magnification of the image.
Express power of a concave lens of focal length 50 cm with its sign.
State three characteristics of the image of an extended source, formed by a concave lens.
