two lenses of power 15 diopter and minus 10 diopter in contact with each other what is the focal length of this combination an object of size this agreement is placed at 30 cm from his combination of lenses position and size of image formed
nishthaarya2
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December 2022
an object is placed at 0.06m from a convex lens of focal length 10m. calculate the position nature of the image formed
nishthaarya2
Asked:
December 2022
A lens is vertically cut into two pieces what will be the change in focal length of each piece.please answer correctlycorrect answer will be marked as brainliest
nishthaarya2
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December 2022
a thin rod of length f/3 is placed along the optic axis of a concave mirror of focal length f such that the image which is real and elongated just touches the rod calculate the magnification produced by the mirror
nishthaarya2
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December 2022
an object is kept in front of a concave mirror of focal length 20cm the image is three times the size of the object calculate two possible distance of object from the mirror
nishthaarya2
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December 2022
a concave lens is kept in contact with a convex lens of focal length 20cm the combination works is a convex lens of focal 50centimetre find the power of concave lens
nishthaarya2
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December 2022
a needle placed 45 cm from a lens forms an image on the screen is 90 cm on other side of lens identify the type of lens and find its focal length and size or needle is 2 cm what is the size of image
nishthaarya2
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December 2022
refractive index of water and glass are 4/3 and 3/2 respectively a ray of light traveling in air is incident on the water glass interface at 30 degrees. calculate the angle of refraction
nishthaarya2
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December 2022
The values of the remainder r when a positive integer a is divided by 3 are 0 and 1 only. justify your answer
nishthaarya2
Asked:
December 2022
a concave lens is kept in contact with a convex lens of focal length 20cm the combination works as a convex lens of focal length 50 cm find the power of the concave lens