IIT-JEE-Physics-Screening-2003

Screening
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1. A metallic shell has a point charge 'q' kept inside its cavity. Which one of the following diagrams correctly represents the electric lines of forces?

metalic-shells

2.         What is the maximum value of the force F such that the block shown in the arrangement, does not move?

    force

        (a)       20 N
            (b)      10 N
            (c)      12 N
            (d)      15 N


3.         Consider a body, shown in figure, consisting of two identical balls, each of mass M connected by a light rigid rod. If an impulse J = MV is imparted to the body at one of its ends, what would be its angular velocity?

   impulse

            (a)       V/L
            (b)       2V/L
            (c)       V/3L
            (d)       V/4L


4.         If W₁, W₂ and W₃ represent the work done in moving a particle from A to B along three different paths 1, 2 and 3 respectively (as shown) in the gravitational fields of a point mass m. Find the correct relation between W₁, W₂ and W₃.

    moving-particles

            (a)       W₁ > W₂ > W₃
            (b)       W₁ = W₂ = W₃
            (c)       W₁ < W₂ < W₃
            (d)       W₂ > W₁ > W₃


5.         A cube has a side of length 1.2 × 10^-2 m. Calculate its volume.
            (a)       1.7 × 10^-6 m³
            (b)       1.73 × 10^-6 m³
            (c)       1.70 × 10^-6 m³
            (d)       1.732 × 10^-6 m³


3λ/2 λ/4d λ/d 4λ/d

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