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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.Assertion A: The Bohr model is applicable to hydrogen and hydrogen-like atoms only.Reason R: The formulation of Bohr model does not include repulsive force between electrons.In the light of the above statements, choose the correct answer from the options given below :(1) Both A and R are true but R is NOT the correct explanation of A.(2) A is false but R is true.(3) Both A and R are true and R is the correct explanation of A.(4) A is true but R is false.

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Given below are two statements: Statement I: Chlorine can easily combine with oxygen to form oxides; and the product has a tendency to explode. Statement II: Chemical reactivity of an element can be determined by its reaction with oxygen and halogens. In the light of the above statements, choose the correct answer from the options given below

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A metal wire of uniform mass density having length L and mass M is bent to form a semicircular arc and a particle of mass m is placed at the centre of the arc. The gravitational force on the particle by the wire is: [Diagram: Semicircular arc with mass m at center]

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