class 12

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JEE Main

Due to the presence of the current \displaystyle{I}_{}

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In which of the following octahedral complexs of Co (at. No. 27), will the magnitude of $Δ_{o}$ be the highest ?

Calculate the wavelength (in nanometer) associated with a proton moving at $1.0×10_{3}ms_{−1}$ (Mass of proton $=1.67×10_{−27}kgandh=6.63×10_{−34}Js$)

The value of $2 ∫sin(x−4π )sinxdx $is:

Standard entropy of $X_{2},Y_{2}andXY_{3}$ are 60, 40 and 50 $JK_{−1}mol_{−1}$, respectively. For the reaction,

The remainder left out when $8_{2n}(62)_{2n+1}$is divided by 9 is

One kg of a diatomic gas is at a pressure of $8×10_{4}N/m_{2}$. The density of the gas is $4kg/m_{3}$. What is the energy of the gas due to its thermal motion ?

The dimension of magnetic field in M, L, T and C (Coulomb) is given as

A thin spherical shell of radius R has charge Q spread uniformly over its surface. Which of the following graphs most closely represents the electric field E(r) produced by the shell in the range $0≤r<∞$, where r is the distance from the centre of the shell ?