CBSE X Physics
Explain how power of lens depends on its focal length?
Asked by akshaykhanna6162
18th June 2017
2:56 AM
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CBSE X Physics
How power of lens is affected by its curvature?
Asked by akshaykhanna6162
18th June 2017
3:02 AM
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ICSE X Physics
The power of a lens is +2.0Dfind its focal length and state the kind of a lens
Asked by Surya
18th June 2017
8:48 AM
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CBSE XII Science Physics Ray Optics and Optical Instruments
Q no 9
Asked by Varsneya Srinivas
24th December 2017
11:43 AM
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CBSE X Science
The far point of a myophic person is 40cm find the focal length and power of lence required for person
Asked by Ak9639315541
19th February 2018
3:03 PM
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CBSE XII Science Physics
Why we multiply 100 when we converting the power of a lens into the focal length
Asked by modi72879
26th February 2018
12:45 AM
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CBSE X Science
2 converging lens are placed together with focal lengths 15cm and 30cm respectively. Calculate the total power?
Asked by varakalasuchi3
26th February 2018
7:39 PM
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CBSE X Physics
A Compound lens is made up of two thin lenses having + 12.5 D -2.5 D find the focal length and the power of combination
Asked by Ak9639315541
14th March 2018
10:00 PM
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JEE Plances JEE (Main) Physics
plz solve the question with explanation
Asked by futureisbright051101
11th April 2018
6:46 AM
Answer Verified by Expert
CBSE X Physics
A magnifying lens of focal length of 20 cm is held 10 cm away from the object 0.25 cm l9ng. Find the position, nature of the image, power and magnification of the lens.
Asked by lakhinandanbora21590
11th July 2018
11:35 PM
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NEET1 NEET1 Physics
Please answer the following question with explanation
Asked by kkudgiri55
20th October 2018
6:58 PM
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CBSE X Physics Light - Reflection and Refraction
Q.1. What is photoelectric effect? Q.2. Power of combination of lens A&B is 5D. If focal length of A is 0.15m.What is the power & focal length of B?
Asked by agraharianiruddha
11th December 2018
6:52 PM
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CBSE IX Physics
The power of lens are 1.50 .how to find its focal length. And which lens is that.
Asked by Fathimathamanna04
20th December 2018
8:47 PM
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CBSE X Science
a person with a myopic eye cnnot see objects beyond 1.2m directly. what should be the type of the corrective lens used? what should be its power?
Asked by rs1702
24th December 2018
2:19 PM
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CBSE VIII Maths
A convex lens of N =1.5 and focal length 0.2m is immersed in water of R.I.=1.33..calculate the change in power of the lens
Asked by ampoluharitha
28th December 2018
8:53 PM
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JEE Main Physics Optics
Give correct answer
Asked by gautamchurisiya
19th February 2019
10:49 PM
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NEET NEET Physics
To remove myopia (short sightedness) a lens of power 9.66D is required. The distant point of the eye is approximately (A)100 (B)151.5 (C)50
Asked by nipunverma59
28th March 2019
9:45 PM
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NEET NEET Physics
A persons near point is 50cm and his far point 3m Powers of the lenses he requires for(1) for reading (2) for viewing (A)-2D and 0.33D (B)2D and -0.33D (C)-2D and 3D The answer given is .............................(B)
Asked by nipunverma59
27th April 2019
8:04 PM
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CBSE X Physics
can you please derive the formula for power of lens as soon as possible.
Asked by murugesan.s NA
18th June 2019
8:56 PM
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CBSE X Physics
explain dioptre of lens by optican
Asked by naushad_saeedi
17th September 2019
10:52 PM
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CBSE X Physics Light - Reflection and Refraction
Define 1 dioptre of power of lens
Asked by lalaarmaan4141
16th December 2019
12:41 PM
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CBSE X Physics The Human Eye and The Colourful World
What is the focal length and power of eye lens of a healthy person
Asked by saradamahapatra9999
12th February 2020
10:24 AM
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CBSE X Physics Light - Reflection and Refraction
The power of eye lens of normal eye where it is at its far point and near point respectively is ( assume the distance of the retina from the rye lens to be 2.5cm)
Asked by anshoomaurya04
20th February 2020
10:05 PM
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CBSE XII Science Physics
The focal length of convex lens 20 cm. It is kept in contact with a concave lens of focal length 25cm. Determine the focal length and power of the combined lens.
Asked by imranbharveli
7th March 2020
7:47 PM
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CBSE X Physics Light - Reflection and Refraction
a concave lens of focal length 25 cm and a convex lens of focal length 20cm are placed in contact with each other. What is the power of this combination and also find the focal length of the combination? each other. What is the power
Asked by tanujasai20
16th June 2020
6:55 PM
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CBSE X Physics Light - Reflection and Refraction
If a spherical lens has a power of, – 0.25 D, the focal length of this lens will be *
Asked by adipadmakarri
19th August 2020
9:01 AM
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CBSE X Physics Light - Reflection and Refraction
power of a lens is found to be + 2.5 Diopter what kind of lens is it
Asked by rathodveeru41
18th December 2020
10:02 PM
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CBSE X Physics Light - Reflection and Refraction
power of a lens is found to be + 2.5Diopter what kind of lens is it
Asked by rathodveeru41
19th December 2020
10:33 AM
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CBSE X Physics
TWO LENSES HAVE POWER OF +2D AND -4D. WHAT IS THE NATURE AND FOCAL LENGTH OF EACH LENS
Asked by kamakshigaur
24th December 2020
4:32 PM
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JEE Main Physics Optics
Find the power of a convex lens that forms a real & inverted image of magnification -1 of an object placed at a distance of 20 cm from its optical center?
Asked by pwsaditya
15th July 2021
5:02 PM
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NEET NEET Physics Optics
A person can see clearly objects only when they lies between 25 cm and 200 cm from his eyes. In order to increase the maximum distance of distinct vision to infinity, the power of correcting lens, the person has to use, will be (1) + 0.5 D (2) – 0.5 D (3) + 0.25 D (4) – 0.25 D
Asked by humerachopda143
4th August 2021
8:22 PM
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CBSE X Physics Light - Reflection and Refraction
Focal Length of lens A is +10cm & lens B is -5cm. Find combined power
Asked by akshata.shukla1910
13th August 2021
12:43 PM
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ICSE X Physics Refraction Through a Lens
two thin lenses of power +3.5 D and -2.5 D are placed in contact . What is the focal length of the lens combination
Asked by smithasumi1976
12th September 2021
12:23 PM
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ICSE X Physics Refraction Through a Lens
what is the power of lens? how do you measure it ?
Asked by nancygarwal636
16th September 2021
11:39 AM
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CBSE X Physics Light - Reflection and Refraction
The power of convex lens of focal length 20 cm is
Asked by varma.renu9481
17th March 2023
6:28 PM
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