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Very important topics for ray optics
Very important topics for ray optics ( for primary practice (topic wise )) These Are the basics questions . Students must have to complete all the questions given below . 1. Reflection by Spherical Mirrors Q 1-Derive the mirror formula for a spherical mirror. Q 2-A concave mirror has a radius of curvature of 20…
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Pascal’s law || class-11th||physics || Fluid mechanics .
Statement of Pascal’s Law Pascal’s Law states that any pressure applied to a confined, incompressible fluid is transmitted undiminished throughout the fluid in all directions and acts with equal force on equal areas. Alternatively, in the absence of gravity, the pressure at any point in a fluid at rest is the same in all directions.…
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A liquid at rest exerts force perpendicular to the surface of the container at every point.
Show that a liquid at rest exerts force perpendicular to the surface of the container at every point. Proof: Suppose the force exerted by the liquid on the container’s surface acts at an angle to the perpendicular (normal) to the surface. We can resolve this force into two components: The tangential component would cause the…