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A convex lens forms a real and inverted image of equal size only when it is kept at the center of curvature of the lens. The image is also formed at the center of curvature at the other side.
Hence, the distance of object = distance of image = 50 cm.
Now, focal length = � � radius of curvature = � � 50 cm = 25 cm
Hope it is clear!
What else can I help you with?
Why does water not escape freely when a narrow-mouthed bottle is suddenly inverted?
Depending on the size of the mouth the water has to flow against the atmospheric pressure. If the bottle is full and the mouth is narrow enough then the water may not flow at all. That is why a hypodermic needle does not leak when held with the needle facing down.
How far do you need to keep a magnet from a compass?
The compass needle is magnetic so if you place a magnet near the compass, the needle will change direction either attracting or reppeling.
What is index correction?
To determine index correction , we take sharp edged straight knitting needle.Measure its actual length using the metre rod.This actual length is called real distance( x ).Arranege the uprights containing the mirror and the needle on the optical bench.Adjust their heights so that centre of the mirror and tip of the needle lie on the same horizontal line i.e the two are at the same height.Adjust the distance between the uprights so that one end of knitting needle touches the knitting needle and the other end of the knitting needle touches the centre of the mirror.Read the positions of the index marks carrying the two uprights. The difference in these positions gives us the observed distance( y ).Index correction = Real distance - observed distance= x - yThis may be +ive or -ive.
What is the name of a compass needle?
The needle in a compass is typically called a magnetic needle or magnetic pointer.
What is the density of a needle?
The density of a needle can vary depending on the material it is made of. For example, a stainless steel needle has a density of about 8 grams per cubic centimeter, while an aluminum needle has a density of about 2.7 grams per cubic centimeter.
What is a tone arm length?
That question belongs to a vinyl record player. It is the distance from the pivot of the tone arm to the cartridge with the replay needle.
What is the difference between a hypertonic needle and a hypotonic needle?
A hypotonic needle is a needle that is a non coring needle. A hypertonic needle is a coring needle. Both of these needles are used in IV's with a hypotonic needle used for hypotonic solutions.
Why does water not escape freely when a narrow-mouthed bottle is suddenly inverted?
Depending on the size of the mouth the water has to flow against the atmospheric pressure. If the bottle is full and the mouth is narrow enough then the water may not flow at all. That is why a hypodermic needle does not leak when held with the needle facing down.
Who made the running stitch?
if you don't have an 'eye' for evenness, take a ruler and draw a line with a removable ink pen. thread your needle and know the end. poke the needle up on the line and then down again a distance down the line you made. repeat for the length of the line. it will look like... _ _ _ _ _ _ _ _ _ _
How far do you need to keep a magnet from a compass?
The compass needle is magnetic so if you place a magnet near the compass, the needle will change direction either attracting or reppeling.
What is index correction?
To determine index correction , we take sharp edged straight knitting needle.Measure its actual length using the metre rod.This actual length is called real distance( x ).Arranege the uprights containing the mirror and the needle on the optical bench.Adjust their heights so that centre of the mirror and tip of the needle lie on the same horizontal line i.e the two are at the same height.Adjust the distance between the uprights so that one end of knitting needle touches the knitting needle and the other end of the knitting needle touches the centre of the mirror.Read the positions of the index marks carrying the two uprights. The difference in these positions gives us the observed distance( y ).Index correction = Real distance - observed distance= x - yThis may be +ive or -ive.
What is a teasing needle?
a teasing needle is a needle that is use when dissecting something
What needle uses no thread?
A hypodermic needle. a record player needle
Is yantex needle same as Groz beckert needle?
is Yantex needle same as groz beckert needle ?Actually I want to know the performance of Yantex needle.
Does a needle is a machine?
a needle does is a machine
What is a swagged needle?
a surgical needle
What are the uses of the needle?
what is needle board
