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Refractive Astronomical Telescope:
It is an optical instrument which is used to see heavenly bodies such as stars, moon and planets is known as telescope.
Astronomical telescope having of a long metallic tube of variable length, two converging lens are mounted at its two ends.
Convex lens of large focal length and big aperture is known as objective.
Convex lens of shorter focal length and large aperture is known as eye piece.
Working:
The objective forms a real and inverted image of the object. This image is very small as compared to the object. The eye piece is used as magnifying glass. The final image is inverted and brighter than the object.
Motion of a swing Periodic Motion : Motion that repeats itself in equal intervals of time is known as periodic motion.
Regarding filtering, image masking & convolution. Assume we have the following Infra-Red image: What filter would you use to remove the impulsive noise in the first row o
Moment of Thin Spherical Shell About Axis This problem can be set up in spherical coordinates so that conversions from Cartesian coordinates are not required. The mass element
Give the conditions needed for production and observation of interference pattern?
A iron rod on the surface of the beach and other iron rod into the sea water which metal corrodes easily? Ans) An iron rod on the surface of teh seawater because in sea it contains
industrial application of ultrasonic welding
Q. What are polar molecules? Give an example. i) A polar molecule is one in that the centre of gravity of the positive charges is separated from the centre of gravity of the ne
Rayleigh criterion; resolving power: A criterion for finding out how finely a set of optics might be able to distinguish. It start with the supposition that central ring of on
What are the Ultrasonic Cleaning Applications? Several of the Ultrasonic Cleaning applications are: a. Ultrasonic Cleaners into Scientific Labs Lab Glassware, Test Tubes,
The rotational velocity of a merry go round is increased at a constant rate from 1.5 rad/s to 3.5 rad/s in a time of 9.5 s. What is the rotational acceleration of the merry-go-
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