MCQ_SINGLE

A particle of mass M moves along a horizontal x axis from $x=0$ to $x=L$. The coefficient of kinetic friction varies as a function of x as $\mu_{k}(x)=\mu_{0}-\alpha x,$ where $\mu_0$, $\alpha$ are constants of appropriate dimensions, so that $\mu_{k}(L)=0$. The total work done by the frictional force during the motion is $n\mu_0 MgL$, where g is the acceleration due to gravity. The value of n is:

MCQ_SINGLE

Consider that $\sigma_{S}$, $k_{B}$, b represents Stefan-Boltzmann constant, Boltzmann constant and Wien's displacement law constant, respectively. The dimension of $\sigma_{s}k_{B}^{-1}b$ is

MCQ_SINGLE

Match List-I with List-II. List-I: A. Starch B. Antibody C. Concanavalin A D. Glut-4 List-II: I. Fights infection II. Energy storage III. Glucose transport IV. Lectin Choose the correct answer from the options given below:

MCQ_SINGLE

Two infinitely long parallel conducting wires A and B carry currents $I$ and $2I$, respectively, in the same direction. The wire A has uniform mass per unit length $\lambda$ and lies on an insulated floor. The wire B is kept fixed at a height $h$ above the floor. The minimum magnitude of $h$ so that the wire A does not rise from the floor is: [$g$ is the acceleration due to gravity and $\mu_{0}$ is the permeability of free space.]

MCQ_SINGLE

Arrange the following elements in descending order of their contribution percentage weight of the human body. (a) Oxygen (b) Carbon (c) Hydrogen (d) Nitrogen Choose the correct answer from the options given below:

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