मराठी

Which lens has more power a thick lens or a thin lens?

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प्रश्न

Which lens has more power a thick lens or a thin lens?

थोडक्यात उत्तर
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उत्तर

A thick lens has more power than a thin lens. This is because a thick lens has a larger surface curvature. It has a short focal length and that is why it deviates the rays of light at a greater extent.

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पाठ 5: Refraction through a Lens - EXERCISE - 5 (C) [पृष्ठ १२६]

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सेलिना Physics [English] Class 10 ICSE
पाठ 5 Refraction through a Lens
EXERCISE - 5 (C) | Q 11. | पृष्ठ १२६

संबंधित प्रश्‍न

Kavita from 10th is using spectacles. The power of the lenses in her spectacles is –2.5 dioptre. Answer the following questions:

1) Which lenses are used in her spectacles?

2) State the defect of vision Kavita is suffering from.

3) Find the focal length of the lenses used in her spectacles


The focal length of a convex lens is 25 cm. What is its power? 


A converging lens has focal length of 50 mm. What is the power of the lens?


A diverging lens has focal length of 3 cm. Calculate the power. 


The optician's prescription for a spectacle lens is marked +0.5 D. What is the:
(a) nature of spectacle lens?
(b) focal length of spectacle lens?


Name the type of lens whose power is positive.
The image of an object formed by a lens is real, inverted and of the same size as the object. If the image is at a distance of 40 cm from the lens, what is the nature and power of the lens ? Draw ray diagram to justify your answer.


A double convex lens has two surfaces of equal radii R and refractive index \[m = 1 \cdot 5\]


A symmetric double convex lens in cut in two equal parts by a plane perpendicular to the principal axis. If the power of the original lens was 4 D, the power a cut-lens will be


A screen is placed a distance 40 cm away from an illuminated object. A converging lens is placed between the source and the screen and its is attempted to form the image of the source on the screen. If no position could be found, the focal length of the lens


A pin of length 2.00 cm is placed perpendicular to the principal axis of a converging lens. An inverted image of size 1.00 cm is formed at a distance of 40.0 cm from the pin. Find the focal length of the lens and its distance from the pin.


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