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What will be the power of convex lens having a focal length is 50 cm?
Wiki User
∙ 11y ago
Convert the focal length to meters, then take the reciprocal. That is how the "power" of a lens is calculated.
Wiki User
∙ 11y ago
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Which lens has a greater power convex lens of focal length 10 cm or a convex lens of focal length 20cm?
Power is inversely related to the focal length. So convex lens of focal length 20 cm has less power compared to that having focal length 10 cm
What is the power of a convex lens with 10cm focal length?
1.0 diopters
Why a small focal length convex lens is used in simple microscope?
because manifying power has inerse relation with that of focal length
What is the power of a plane mirror?
Power is ZERO Since power = 1/ focal length As focal length of plane mirror is infinity, its reciprocal is 0
Is a double convex lens converging lens?
Yes converging lens. The power of the lens is given by reciprocal of its focal length. Moreover the power for converging action is +ve. So as we place two converging lenses ie convex lenses, then we have to add the powers. Once again the power becomes +ve. So converging action is definite.
Which lens has a greater power convex lens of focal length 10 cm or a convex lens of focal length 20cm?
Power is inversely related to the focal length. So convex lens of focal length 20 cm has less power compared to that having focal length 10 cm
What is the power of a convex lens with 10cm focal length?
1.0 diopters
Why a small focal length convex lens is used in simple microscope?
because manifying power has inerse relation with that of focal length
How do you find the power of lenses using focal lengths?
Power (F)= 1/focal length (f) focal length f, is measured in meters the power, F, is in dioptres (D) In converging or convex lenses the power is positive In diverging or concave lenses, the power is negative :)
Does a thinner and less convex lens have a shorter focal length and low optical power?
It is not necessary that a thinner convex lens have less optical power or a thicker lens has more optical power
A concave lens is kept in contact with convex lens of focal length 20cm the combination works as a converging lens of focal length 100cmcalculate the power of concave lens?
i think it is -0.06m i.e. 6cm
What is a positive lens the same as?
A positive lens is also called a magnifying lens. It has convex surfaces and it has a measureable focal length where it produces an inverted image of a distant object. The power in dioptres is the reciprocal of the focal length in metres.
Why is power is used as reciprocal of focal length?
The tendency to converge the rays decides the power factor. So shorter the focal length converging is tremendous. Hence power is reciprocal of focal length
If the primary mirror of a telescope have a focal length of 225 centimeters and the eyepiece has a focal length of 7.5 millimeters then what is the magnifying power of the telescope?
The magnifying power of a telescope is the focal length of the scope in millimeters, divided by the focal length of the eyepiece in millimeters. Focal length of scope: 225cm=2250mm Focal length of eyepiece: 7.5mm 2250/7.5= 300X
What is the power of a plane mirror?
Power is ZERO Since power = 1/ focal length As focal length of plane mirror is infinity, its reciprocal is 0
What is power of plane glass sheet?
it is zero . Power = 1/focal length The focal length of a plane glass or mirror is infinite, therfore power is zero
Which lens provides more magnification-a low power or a high power?
A lens of short focal length has a greater power (than a lens of large focal length)
