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Q. What is Fraunhofer diffraction? a) The source as well as the screen are at infinite distances from the obstacle producing diffraction. b) The wave front suffer diffracti
Avogadro constant; L; NA (Count A. Avogadro; 1811) The number of items in a sample substance is equivalent to the number of atoms or molecules in a sample of ideal gas that is
Explain about the piezoelectric effect. Piezoelectric effect: While crystals as quartz or tourmaline are stressed beside any pair of opposite faces, electric charges of oppo
Silver Symbol Ag Atomic weight 107.868 Atomic number 47 discovery
A ball is 6.5 m from a convex mirror with a magnification of 0.75. If the image is 0.25 m in diameter. What is the diameter of the actual ball?
Neutron possesses: (1)Positive charge (2)Negative charge (3)No charge (4)All are correct Ans: (3)No charge
A source producing sound at frequency 400 Hz is moving along the Y axis with a speed of 22 metre per second. A listener is situated at position (660m,0). Find the frequency of the
What are the magnitude and the sign of a point charge that experiences a force of 0.48 N east when placed in an electric field of 1.6 x 10 5 N/C west? Normal 0
plane transmission grating
What is the cause of Brownian motion? Molecules in a gas move constantly, freely, randomly, in all directions and at high speeds. They are able to do so because the intermolecu
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