A beam of unpolarised light of intensity I0 is passed through a polaroid A and then through another polaroid B which is oriented so that its principal plane makes an angle of 45° relative to that of A. The intensity of the emergent light is :

Anonymous User Physics 04 Oct, 2020 1 Answer 57 views

A diode detector is used to detect an amplitude modulated wave of 60% modulation by using a condenser of capacity 250 pico farad in parallel with a load resistance 100 kilo ohm. Find the maximum modulated frequency which could be detected by it.

Anonymous User Physics Capacitors 04 Oct, 2020 1 Answer 56 views


A sonometer wire of length 1.5 m is made of steel. The tension in it produce an elastic strain of 1%. What is the fundamental frequency of steel if density and elasticity of steel are 7.7 × 103 kg / m3 and 2.2 × 1011 N/m2 respectively ?

Anonymous User Physics 04 Oct, 2020 1 Answer 58 views



A uniform cylinder of length L and mass M having cross - sectional area A is suspended, with its length vertical, from a fixed point by a massless spring, such that it is half submerged in a liquid of density σ at equilibrium position. The extension x0 of the spring when it is in equilibrium is :

Anonymous User Physics 04 Oct, 2020 1 Answer 58 views


































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markhogue General 23 Sep, 2020 0 Answer 54 views

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markhogue General Science 23 Sep, 2020 0 Answer 61 views