Match list-I with list-II

List-I	List-II
(A) Rays used in satellite communication	(I) X rays
(B) Rays produced in nuclear reaction	(II) Gamma rays
(C) Radiation used for studying crystal structure	(III) Ultraviolet rays
(D) Radiation absorbed by ozone layer	(IV) microwave

Choose the correct answer from the options given below:

Conductors develop electric currents in them

A resistor R and an inductor L are connected in series to a 24 V, 50 Hz supply. A current of 1 A flows through the circuit. If the current differs in phase from the applied voltage by 60°, the value of impedance in the circuit is

A small piece of metal wire is dragged in the region of magnetic flux \( 8 \times 10^{-4} \, \text{Wb} \) in 0.5 s. The length of the wire is perpendicular to the magnetic field. The emf induced in the wire would be:

Wavelength of matter wave is independent of :

In a potentiometer arrangement for comparing emf of two cells, it was found that a cell of emf 1.25 V gives a balance point at 0.35 m length of the wire. On replacing the cell by another cell, the balance point shifted to 0.63 m. The emf of the second cell is :

The deBroglie wavelength of electron when accelerates through potential \(V\) is given by \(\lambda=\frac{h}{\sqrt{x} \sqrt{V}}\) then x is equal to :
where \(m =\) mass of electron
\(k =\) kinetic energy of electron
\(p =\) momentum
e = charge

The maximum value of \((\sin x)(\cos x)\) is :

A nucleus with mass number 240 and binding energy per nucleon 7.6 MeV splits into two fragments each of mass number 120 with binding energy per nucleon 8.5 MeV. The amount of energy released in this process will be :

Area bounded by the curve \(y=\log x, x\)-axis, \(x=1\) and \(x=2\) in square units is:

The area of the region bounded by the line \(y = 2 x\) and the \(x\)-axis between \(x = - 2\) and \(x = 2\) is

Read the following passage carefully and answer the given questions.
Immune System in the Body
The human immune system consists of lymphoid organs, tissues, cells and soluble molecules like antibodies. The primary lymphoid organs are bone marrow and thymus where immature lymphocytes differentiate into antigen-sensitive lymphocytes. After maturation the lymphocytes migrate to secondary lymphoid organs like spleen, lymph nodes, tonsils, Peyer's patches of small intestine and appendix. The secondary lymphoid organs provide the sites for interaction of lymphocytes with the antigen, which then proliferate to become effector cells. The bone marrow is the main lymphoid organ where all blood cells including lymphocytes are produced. Each antibody molecule has four peptide chains, two small called light chains and two longer called heavy chains. Hence, an antibody is represented as H2L2. Different types of antibodies are produced in our body. IgA, IgM, IgE, IgG are some of them. Techniques like radiography (use of X-rays), CT (computed tomography) and MRI (magnetic resonance imaging) are very useful to detect cancers of the internal organs.
Maturation of lymphocytes takes place in:

GEAC is: