CBSE Class 10 Physics Lens Formulae
Q.
A convex lens of focal length 20 cm is placed at a distance of 10 cm from a screen. How far from the lens should an object be placed so as to form its real image on the screen?
Q.
If the magnification produced is +0.5, then the nature of the image is ________ and the nature of the lens is ____________.
Next Videos
- A concave lens has focal length of 20 cm. At what distance from the lens a 5 cm tall object be placed so that it forms an image at 15 cm from the lens? Also calculate the size of the image formed.
- A concave lens has focal length of 30 cm. At what distance should the object be placed from the lens so that it forms an image at 20 cm from the lens ? Also, find the magnification produced by the lens.
- solve x + y + z + u = 120 , 2x + y + 4 z+ 3y = 29 , 3x + 2y +z + 4u= 27, 4x + 3y +z +2u = 22. find x,y .z. u
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- I don't know how to take focal length, image distance and object distance positive or negative in lenses and mirrors?
- what is magnification producer?
- I WANT TO UNDERSTAND LENS FORMULAE
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