The filament of a lamp is 80cm from a screen and a converging lens forms an image of it on a screen

Описание: #excellentideasineducation #education #science #school #light #physics #cbseboard
The filament of a lamp is 80cm from a screen and a converging lens forms an image of it on a screen, magnified three times. Find the distance of the lens from the filament and the focal length of the lens.

The distance between an object and a screen is 80cm.If a 3 times magnified image is formed on the screen.Find the object distance,focal length and the image distance.

A student focused the image of a candle flame on a white screen using a concave mirror.He noted down the position of the candle, screen and mirror as follows
Position of candle =14cm
Position of screen = 26cm
Position of mirror = 50cm
   • Image of a candle flame on a white screen ...  

Sign Convention for Reflection of Light by Spherical Mirror / Light Reflection and Refraction
   • Sign Convention short tricks for Mirrors #...  

An illuminated object lies at a distance of 1 m from a screen. A convex lens is used to form an image of the object on the screen placed at distance of 75 cm from the lens. Find the focal length of lens and magnification
   • An illuminated object lies at a distance o...  

Sign Conventions for Lenses / Light Reflection and Refraction
   • Sign Convention short tricks for Lenses #s...  

A 2cm high object is placed at a distance of 32cm from a concave mirror. The image is real, inverted and 3cm in size.Find the focal length of the mirror and the position where the image is formed
   • Light Class 10 Important Numericals / 2cm ...  

Real image 4/5 size of the object is formed 18cm from a lens. Calculate focal length of the lens / Light class 10 numericals short tricks / How to Solve Lens Numericals / Light Reflection and Refraction Numericals
   • Real image 4/5 size of the object is forme...  

When an object is placed at a distance of 50cm from a concave spherical mirror the magnification produced is -1/2.Where should the object be placed to get a magnification of -1/5.
   • When an object is placed at a distance of ...  

A lens forms a real image 3 cm high of an object 1 cm high.If the separation of object and image is 15 cm. Find the focal length of the lens.
   • A lens forms real image 3 cm high of an ob...  

A concave mirror produces three times magnified real image of an object 10 cm infront of it. Where is the image formed
   • A concave mirror produces three times magn...  

An object 1m tall is placed on the principal axis of convex lens and it's 40cm tall image is formed on the screen placed at a distance of 70cm from the object.What is the focal length of lens.
   • An object 1m tall is placed on the princip...  

Find the position nature and size of the image formed by a convex mirror / Security mirror used in a big showroom has radius of curvature 5m.If a customer is standing at a distance if 20m from the cash counter
   • Security mirror used in a big showroom has...  

CBSE Class 10 Science Chapter / Light-Reflection and Refraction MCQ Question / CBSE Board Exam Important Questions / Secret Trick to Solve Assertion and Reason Questions
   • Light Reflection and Refraction - Part 1 A...