Q. Define the following:
(a) Transducer
(b) Bandwidth.

Q. Write Ampere's circuital law. A long straight wire of a circular cross-section (radius $a$) carrying steady current. Current is uniformly distributed in the wire. Calculate magnetic field inside the region $(r<a)$ in the wire.

Q. Write Biot-Savart law.
Write the path of motion of an electron when it enters in magnetic field at
(a) perpendicular
(b) an angle $\theta$.

Q. Explain the working to obtain $V-I$ characteristic curve in forward biasing of P-N junction diode. Draw a circuit diagram of experimental arrangement.

Q. (a) Write Gauss' law for magnetism in the form of Maxwell's equation.
(b) Write the value of $\frac{1}{\sqrt{{\mu }_0{\epsilon }_0}}$.

Q. An element $A$ decays into element $C$ by the following two step processes:
$A⟶{{}_{2}He}^4+B$
$B⟶2\left({{}_{-1}e}^0\right)+C$
Select pair for isobars from elements $A,B$ and $C$.

Q. Match the following:

Column I	Column II
A. $\mu =\tan i_p$	P. Snell's law
B. $\mu =\frac{1}{\sin i_c}$	Q. Brewster's law
C. $\mu =\frac{\sin i}{\sin r}$	R. Prism
D. $\mu =\frac{\sin \left(\frac{A+D_m}{2}\right)}{\sin \frac{A}{2}}$	S. Total internal reflection

Q. What is modulation? In the given block diagram of a receiver for detection of amplitude modulated wave, write the name of part $X$.

Q. Write any two properties of electric field lines.

Q. (a) In the given circuit diagram (bottom figure), find the value of unknown resistance $S$, in the balancing condition of meter bridge.
(b) In the given circuit diagram (top figure) write the value of resultant resistance in between $X$ and $Y$ when key $K$ is
(i) Opened
(ii) Closed.

Q. What is meant by amplification? Draw a simple circuit of n-p-n common emitter transistor amplifier.
On the basis of band theory, distinguish between conductor, insulator and semi-conductor.

Q. (a) In free space at a point magnitude of electric field vector $\left(\overrightarrow{E}\right)$ is $9.3V/m$. Find the magnitude of magnetic field vector $\left(\overrightarrow{B}\right)$ at the point.
(b) Out of ultraviolet, infrared and X-rays whose wavelength is maximum?

Q. Write the statement of Gauss' law for electrostatics.
Draw a diagram and derive an expression for electric field due to a uniformly charged infinite plane sheet at a point near the sheet.
For the given diagram, write the value of electric flux passing through the surface.

Q. Define the following in photoelectric effect phenomenon:
(a) (i) Work function
(ii) Stopping potential (cut-off potential)
(b) Calculate energy of photon of wavelength $3.31\mathring{A}$.

Q. Write Faraday's law of electromagnetic induction.

Q. Write Kirchhoff's first rule (law of junction). Drawing a circuit diagram of Wheatstone bridge, derive condition for zero deflection in the bridge.

Q. What is rectification? Explain the working of a fullwave rectifier. Draw necessary circuit diagram.

Q. Write the law of radioactive decay. Decay constant of a radioactive substance is ${10}^{-3}$ per year. Calculate its half-life time in year.

Q. Define a capacitor.
Draw a circuit diagram and obtain a relation for equivalent capacitance in the series combination of capacitors.
In given circuit diagram write the value of $V_1$.

Q. Draw phasor diagram for a series LCR circuit with alternating voltage source, determine the expression for the impedance of the circuit.

Q. Write Bohr's any two postulates for hydrogen atom.

Q. Write the names of logic gates related to figure $P$ and table $Q$.
Table:$Q$

$A$	$B$	$Y$	$Y^{\prime }$
$0$	$0$	$0$	$1$
$0$	$1$	$1$	$0$
$1$	$0$	$1$	$0$
$1$	$1$	$1$	$0$

Q. Define angle of dip. Find the value of dip angle at any point for which the horizontal component and vertical component of earth's magnetic field are equal.

Q. Heights of transmitting and receiving antennas from earth surface are $h_T$ and $h_R$ respectively. Write the relation for maximum line-of-sight (LOS) distance between two antennas.

Q. In given diagrams write the direction of magnetic field produced at point $P$ in form of $\otimes$ and $\odot$.

Q. Calculate de Broglie wavelength associated with an electron, accelerated through a potential difference of $400V$.

Q. Define equipotential surface.

Q. Define the phenomenon of total internal reflection.

Q. Which type of lens is used to correct astigmatism?

Q. In an alternating circuit applied voltage is $220V$. If $R=8\Omega$, $X_L=X_C=6\Omega$ then write the values of the following:
(a) Root mean square value of voltage.'
(b) Impedance of circuit.