Author: Study Clue

A concave mirror (f = 15 cm) forms a real image 30 cm in front; object distance is A 10

A plane mirror rotated by 10° causes reflected ray to rotate by A 5° B 10° C 20° D 40°

During reflection at a plane surface, which quantity definitely remains unchanged A Direction B Intensity C Phase D Frequency Explanation

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In a plane mirror, the angle between incident ray and reflected ray equals A i − r B 2i C

A spherical Gaussian surface encloses total charge +Q; if its radius is doubled, total electric flux through it becomes: A

A closed surface encloses +2.0 μC charge; what is the total electric flux through the surface A 1.13×10⁵ Nm²/C B

In vacuum with no charges, Gauss’s law implies which component of E for a plane wave is absent? A Longitudinal

In a region with no free charge, Gauss’s law for electricity implies electric flux through any closed surface is: A

Which Maxwell equation links electric flux through a closed surface to enclosed charge in integral form? A Faraday’s law B