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Arago spot (D.F.J. Arago)
A bright spot which appears in the shadow of a uniform disc being backlit through monochromatic light emanating from a point source.
A body has a weight W kg on the surface of earth. What will be its weight on the surface of moon in gravitational units of force and SI units? Ans) mass of body=W/g At moon w
what is the physical significance of damping constent
What are the advantages of fibers optics? Glass fiber optics are extremely resilient and ideally fine for working in places where the actual conductor will tend to extreme temp
What is Rdiography.
The work done by a friction force is: a) Always positive b) Always negative c) Always zero d) Either positive or negative depending upon the situation. An
What are the basic block structure of communication system? What do you understand by sky wave propagation?
Friction is a microscopic constant and so macroscopic level area does not matter. But area would matter if the object we''re putting under study was microscopic, which isn''t in o
The measurements taken in Ramdesns eyepiece more worthy (reliable) than Huygens eyepiece. Why? Describe critical angle. show its relationship with refractive index.
A bird flies in the east direction with a speed of 5 ms-1. The wind is blowing towards north at a speed of 3 ms-1. Determine the relative velocity of the bird with respect to the w
Uses of radio isotopes: Used in i)Medicine ii) Industry iii) Agriculture iv) Meteorology and v) Radio active dating.
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