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According to Rutherford's experiment when a sample of radioactive substance is place in a lead box and permit the emission of radiation by a small hole only. When the radiation enters into the external electric field, they divide into three parts
(i) Radiations which deflects towards negative plate are known as alpha- rays (stream of positively charged particles)
(ii) Radiations which deflects towards positive plate are known as Beta-particles (stream of negatively charged particles)
(iii) Radiations which are undeflected known as Gamma rays. (E.M. waves or photons)
A sample of argon of mass 10.4 g occupies 2100 ml at 30 o C . (i) Calculate the work done by the gas when it expands isothermally against a constant external pressure of 3
Dielectric constant of vacuum is (A) Infinity. (B) 100. (C) One. (D) Zero. Ans: Dielectric constant of vacuum is one.
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.
mayer''s relationship connecting Cp and Cv
Describe NOR and NAND gates. Provide their truth tables. Discuss the nature of a p-n junction. How does a potential barrier develop at the junction.
two forces of 20 units and 30 units act at right angle what is the magnitude of resultant force
how to solve kinematic problems?
Why we are showing work done over a closed path is zero to prove that electrostatic forces are conservative
if a 5-kg object experience a 10-n force for a 0.10-second, then what is momentum change of the object
In thermodynamics, the Joule-Thomson effect describes a process in which a fluid is forced through a valve or porous plug while kept insulated so that no heat is exchanged with the
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