CBSE X Physics
Why does'nt power of lens depends on refractive index of lens because more the refractive index, more strongly it will bent tge light( as high refractive index will increase the angle of refraction)
Asked by akshaykhanna6162
18th June 2017
2:59 AM
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NEET1 ALL Class Physics Light - Reflection and Refraction
A LUMINOUS OBJECT IS PLACED AT A DISTANCE OF 30CM FROM THE CONVEX LENS OF FOCAL LENGTH 20CM.ON THE OTHER SIDE OF THE LENS,AT WHAT DISTANCE FROM THE LENS A CONVEX MIRROR OF RADIUS OF CURVATURE 10CM BE PLACED IN ORDER TO HAVE AN UPRIGHT IMAGE OF THE OBJECT COINCIDENT WITH IT?A-12CM,B-30CM,C-50CM,D-70CM
Asked by Priyanka
13th November 2017
4:04 PM
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NEET1 ALL Class Physics Light - Reflection and Refraction
THE DISPERSIVE POWER OF THE MATERIAL OF TWO LENSES ARE IN RATIO 4:3 .IF THE ACROMATIC COMBINATION OF THESE TWO LENSES IN CONTACT IS A CONVEX LENS OF FOCAL LENGTH 60CM,THEN FOCAL LENGTH OF THE COMPONENT LENSES ARE?A,-20CM AND +25 CM,B,-20 AND -25,C,-15 AND +20
Asked by Priyanka
13th November 2017
4:09 PM
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NEET1 ALL Class Physics Light - Reflection and Refraction
The Plane face of the Plano convex lens of focal length 20cm is silverd. What type of mirror will it behave and of what focal length? A-convex, f=20cm vice versa. B-convex focal length 10cm or vice-versa
Asked by Priyanka
13th November 2017
9:43 PM
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CBSE X Physics Light - Reflection and Refraction
A SCREEN IS PLACED 90 CM FROM AN OBEJCT. THE IMAGE OF THE OBJECT ON THE SCREEN IS FORMED BY A CONVEX LENS AT TWO DIFFERENT LOCATIONS SEPARATED BY 30 CM. FIND THE FOCAL LENGTH OF THE LENS.
Asked by sohamsouthpoint02
30th December 2017
1:28 AM
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CBSE X Physics
An image formed on a screen is three times of the object .The object and screen are 80 cm apart when the image is sharply focused.Calculate the focal length of the lens.
Asked by Rajendra Beniwal
11th January 2018
4:20 PM
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CBSE X Physics Light - Reflection and Refraction
An object is placed perpendicular to the principal axis of concave lens of focal length 30 cm. Find the position of an image when the object is at a distance 20 cm from the lens.
Asked by jullypradhan001
16th January 2018
8:16 AM
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JEE Plances JEE (Main) Physics
plz solve the question with explanation
Asked by futureisbright051101
11th April 2018
6:48 AM
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CBSE X Physics
Given , h=5 , f=12, u=8cm,v=? By lens formula
Asked by panchalrajveer96
21st October 2018
7:26 AM
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CBSE XII Science Physics
a converging lens has a focal length of 23cm in Air. it is made up of a material of refractive index 1.5 . it is immerersed in a liquid of refractive index 1.2 . calculate its new focal length.
Asked by sandeepsingh78602
7th December 2018
3:27 PM
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CBSE XII Science Physics
Establish the formula of lens. 1/f=(meu-1)(1/R-1/R')
Asked by Ravishankarpoddar652
3rd January 2019
9:22 AM
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CBSE X Physics Light - Reflection and Refraction
An object placed on ameter scale at 8 cm mark was focused on a white screen placed at 92 cm mark,using a converginglens placed on the meter scale at 50 cm mark. a) find the focal length of the converging lens b) find the position of the image formed if the object is shifted towards the lens at a position of 29 cm c) state the nature of image formed if the object is further shifte towards the lens.
Asked by rs1702
7th January 2019
12:09 PM
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CBSE XII Science Physics Ray Optics and Optical Instruments
An equiconex lens of power p is cut into two equal halves by a plane perpendicular to its principal axis . The power of its halves will be ?
Asked by pradeepjsme
30th January 2019
3:49 PM
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CBSE XII Science Physics Ray Optics and Optical Instruments
establish lens equation and establish lens market formulas
Asked by anindita00002
18th February 2019
1:18 PM
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CBSE X Physics Light - Reflection and Refraction
The magnification of an image formed by a lens is – 1. If the distance of the image from the optical centre of the lens is 35 cm, where is the object placed ? What is the nature and focal length of the lens ? If the object is displaced 20 cm towards the optical centre of the lens, where would the image be formed and what will be its nature ? Draw a ray diagram to justify your answer.
Asked by biotechckt
10th March 2019
11:45 AM
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CBSE XII Science Physics
Derive lens formula for convex lens.
Asked by polyrelation
14th March 2019
9:16 PM
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CBSE X Physics Light - Reflection and Refraction
I WANT TO UNDERSTAND LENS FORMULAE
Asked by deevyanshkumarsingh
23rd March 2019
9:00 AM
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CBSE XII Science Physics
A converging lens of refractive index 1.5 and of focal length 15 cm in air, has the same radii of curvature for both sides. if it is immersed in a liquid of refractive index 1.7, Calculate the focal length of the lens in the liquid?
Asked by satya785583
24th March 2019
10:58 AM
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CBSE X Physics Light - Reflection and Refraction
The object 5cm high is placed in front of a lens of power +2D. Two times real and magnified image of the object is attained by the lens. Find 1)Object distance 2)Image distance 3)height of the image
Asked by katariayash1212
17th June 2020
1:06 PM
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ICSE X Science
as object distance is decreased zero, that is the object is held very close to the lens ,the images in a diverging lens and converging lens become almost similar. can you find a simple qualitative explanation as to why? is there one different still?
Asked by kumargangwarn
19th July 2020
3:56 PM
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CBSE X Physics Light - Reflection and Refraction
The radius of curvature of two faces of double convex lens are 10cm,15cm and its focal length is 12cm. Then determine refractive index of lens
Asked by abdibnzubair
6th October 2020
12:52 PM
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CBSE X Physics Light - Reflection and Refraction
CAN U SEND ME THE IMPORTANT FORMULAE IN LIGHT REFLECTION AND REFRACTION
Asked by chandukoppararpu
14th October 2020
7:45 PM
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CBSE XII Science Physics Ray Optics and Optical Instruments
define lens maker formula
Asked by bmahalik21
4th March 2023
7:03 PM
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CBSE XII Science Physics Ray Optics and Optical Instruments
obtain the lens formula in case of concave lens
Asked by marvellouskyndiah
17th May 2023
8:07 AM
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CBSE XII Science Physics Ray Optics and Optical Instruments
Why don't we use sign convention while deriving lens makers formula?
Asked by santhoshsindoora
27th September 2023
8:26 PM
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JEE Main Physics Optics
A double convex lens has two surface of equal radii R and refractive index 1.5 ,then focal length f
Asked by sreelekhachakali2006
15th March 2024
10:35 AM
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