A $$2 \mathrm{~kg}$$ brick begins to slide over a surface which is inclined at an angle of $$45^{\circ}$$ with respect to horizontal axis. The co-efficient of static friction between their surfaces is:

Match List I with List II

	LIST I		LIST II
A.	Purely capacitive circuit	I.
B.	Purely inductive circuit	II.
C.	LCR series at resonance	III.
D.	LCR series circuit	IV.

Choose the correct answer from the options given below:

Which of the diode circuit shows correct biasing used for the measurement of dynamic resistance of p-n junction diode :

A sample of gas at temperature $$T$$ is adiabatically expanded to double its volume. Adiabatic constant for the gas is $$\gamma=3 / 2$$. The work done by the gas in the process is:

$$(\mu=1 \text { mole })$$