Class 12th

Two plane mirrors M₁ and M₂ are at right angle to each shown. A point sources 'P' is placed at 'a' and '2a' meter away from M₁ and M₂ respectively. The shortest distance between the images thus formed is :   $\left(Take\sqrt[]{5}=2.3\right)$

Which one of the following is used to remove most of plutonium from spent nuclear fuel?

The major product of the following reaction, if it occur by $S_N^2$  mechanism is:

Which one of the following chemicals is responsible for the production of HCl in the stomach leading to irritation and pain?

A small square look offside 'a' and one turn is placed inside a larger square loop of side b and one turn (b >> a). The two loops are coplanar with their centres coinciding. If a current I is passed in the square loop offside 'b', then the coefficient of mutual inductance between the two loops is:

In an ac circuit, an inductor, a capacitor and a resistor are connected in series with $X_L=R=X_C.$  Impedance of this circuit is:

Choose the correct waveform that can represent the voltage across R of the following circuit, assuming the diode is ideal one:

Which one of the following is the major product of the given reaction?