class 12

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JEE Main

The reason for “drug induced poisoning” is :

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Consider a spherical shell of radius R at temperature T. The black body radiation inside it can be considered as an ideal gas of photons with internal energy per unit volume $u=VU ∝T_{4}$ and pressure $p=31 (VU )$. If the shell now undergoes an adiabatic expansion the relation between T and R is :

For the non – stoichiometre reaction $2A+B→C+D$ , the following kinetic data were obtained in three separate experiments, all at 298 K The rate law for the formation of C is:

The number of geometric isomers that can exist for square planar $[Pt(Cl)(py)(NH_{3})(NH_{2}OH)]_{+}$ is (py = pyridine):

If f and g are differentiable functions in [0, 1] satisfying \displaystyle{f{{\left({0}\right)}}}\text{}=\text{}{2}\text{}={g}

If the coefficients of $x_{3}$and $x_{4}$in the expansion of $(1+ax+bx_{2})(1−2x)_{18}$in powers of x are both zero, then (a, b) is equal to

The I - V characteristic of an LED is

Match List - I (Fundamental Experiment) with List - II (its conclusion) and select the correct option from the choice given below the list :

The period of oscillation of a simple pendulum is $T=2πgL .$ Measured value of L is 20.0 cm known to 1 mm accuracy and time for 100 oscillations of the pendulum is found to be 90 s using wrist watch of 1 s resolution. The accuracy in the determination of g is :