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An object is placed 25.0cm from a thin converging lens. A screen is positioned so that a sharp image of the object is seen on the screen. When the object is moved 4.0cm closer to the lens, the screen must be moved 3.0cm farther away from the lens in order to retain a sharp image. Determine the focal length of the lens.(What is the focal length of the lens?)
Q. Hoop, Disk, Cylinder and Sphere A disk, a hoop a cylinder and a sphere have the same mass and the same diameter. Every is rolled toward a ramp with the same initial velocity
The percentage of carbon in mild steel is (A) 0.08 to 0.3 % (B) 0.5 to 1.4 % (C) 2.35 % (D) 0.5 % Ans: The percentage of carbon in mild st
Centrifugal pseudoforce A pseudoforce which occurs while one is moving in consistent circular motion. One feels a "force" directed outward from the center of motion.
A car is moving along a straight horizontal road at a speed of 20 meters per second. The brakes are applied and a constant force of 5000 Newtons decelerates the car to a stop
State the uses of Zinc sulphide Zinc sulphide has a lattice constant of 0.596nm . The sulfide ions are quite big (atomic radius 184 pm) relative to the size of the zinc ions (7
Determine the refractive index of a pair of media provided critical angle as 40°. Determine the angle of deviation generated by a thin prism of refracting angle 5° and refractiv
a closed organ pipe resonates with frequency 6hz and an open organ pipe resonates with frequency 12Hz. if the two organ pipes are joined to form a single organ pipe then it will re
Portrayed is a ray from an object which heads toward and then into a lens. Suppose if the ray is a principal ray where does it go from there? Ans: This is the simple p
how to study the earth''s magnetic field using a tangent galvanometer?
how to solve problems on constrained relations
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