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Question:
A person is putting effort to determine the characteristics of an image formed by a converging lens by means of a ray tracing diagram. The person has sketched one principal ray. What is incorrect with the principal ray?
Ans:
For a converging lens there is certainly a principal ray that leaves the object and from there travels toward the plane of the lens along a line that passes through the focal point on the same side of the lens as the object. For the case of an object far from the lens than the focal point this ray will indeed pass through the focal point on its way to the plane of the lens.
At the plane of the lens this ray suddenly changes to a path that is parallel to the principal axis of the lens.
The main constituents of glass is (A) SiO 2 (B) B 2 O 3 (C) Al 2 O 3 (D) Cr 2 O 3 Ans: The main constituents of glass are SiO 2 .
State two conditions to obtain sustained interference of light In Young's double slit experiment, using light of wavelength 400 nm, in terference fringes of width 'X' are obtain
When the attacking species during the addition reaction is Nucleophilic, it is nucleophilic addition reaction. Ex; Acetaldehyde cynohydrin
what is torsion of cylinder ?
binding energy of nucleas
a) A positive point test charge q 0 is placed at the midpoint p among the two equal positive charges q. What forces acts on it at or near this point p? b) Two charges 1X10 -
Aiming at the Monkey - Fast Assume a zookeeper must shoot a banana from the banana cannon to a monkey who hangs from the limb of a tree. That particular monkey has a habit of d
how many seconds dose it take an elevator to travel 373m if it accelerates at 4.80 m/s^2 and has a velocity of 17.8m/s how much time does it take an elevator to travel 373 meters
Avogadro's hypothesis (Count A. Avogadro; 1811) At the same temperature and pressure, equal volumes of all of the gases contain equal numbers of molecules. In fact, it is, only
Hi, Good day. I enjoy watching your physics videos, but I have a question and was wondering if you can answer it for me showing the working. the question is as follows: A flat truc
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