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Q. Movement of principal ray?
In every case a principal ray moves from the head of the object to the plane of the lens. It passes through the plane of the lens as well as continues travelling into the space on the other side of the plane of the lens the side opposite that on which the object resides. In depicting principal rays one should include at least one arrowhead pointing toward the plane of the lens on the ray segment that extends from the head of the object to the plane of the lens as well as at least one arrowhead pointing away from the plane of the lens on the ray segment on the other side of the lens the side opposite that on which the object resides.
Magnetism: 1. There are two types of magnetic pole north and south. 2. Like poles repel and unlike pole attract each other. 3. Magnetic substance produce magnetic field.
The number of independent directions in which a system (or gas molecule) can have motion, are called as the number of degrees of freedom of that molecule or object. The number of d
assignment about electro magnetic waves
what is 500,000+700,000
Energy: The term energy may be defined as the capacity for doing work. There are two forms of energy: potential energy and kinetic energy. POTENTIAL ENERGY Potential e
Cathode rays have: (1)Mass only (2)Charge only (3)No mass and charge (4)Mass and charge both Ans:(4)Mass and charge both
Q. Prove that for thin films, the interference pattern in reflected and transmitted light are complementary to each other. Also explain why the excessively thin films seen i
Q. It is possible to have motion in the absence of a force. Yes it is True, in the absence of a force a body will continue moving in a straight line and at a constant velocity
Motion Animation A car along with a non-zero initial speed has a constant acceleration whose value could be controlled through the user.
A balance trick Get a smooth metre stick and let it rest lightly on your two forefingers. Place your fingers near the ends of the stick and then move them in the direction of t
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