Choose the correct option:
In a region of constant potential

The function of the soft iron core in the moving coil galvanometer is:

A semiconductor has an electron concentration of \( 8 \times 10^{13} \text{ m}^{-3} \) and hole concentration of \( 2 \times 10^3 \text{ m}^{-3} \). The semiconductor behaves as:

A constant voltage is applied across a wire of non-uniform area of cross-section. Which of the followings quantity is independent of the cross-section?

The experimental circuit arrangements for studying V-I characteristics of a p-n junction diode are given below:

Identify the circuit for forward bias and for reverse bias.

Match List I with List II

List I	List II
A. Rod rotated in uniform magnetic field	I. \( e = e_{0} \sin(\omega t) \)
B. Coil rotated in uniform magnetic field	II. \( e = Blv \)
C. Rod moved with linear velocity \( v \)	III. constant (for motional emf at constant \( v \))
D. Rectangular coil moved in magnetic field	IV. \( e = \frac{B\omega l^{2}}{2} \)

Choose the correct answer from the options given below:

Two concentric circular loops of radius 5 cm and 15 cm are placed co-axially. Find e.m.f induced in the inner loop, if the current through the outer loop is changed at a rate of 10 A/ms. Assume the magnetic field on the inner loop to be uniform.

Arrange the following steps in the process of translation in correct sequence?
(A) Binding of release factor to stop codon
(B) Movement of ribosome from codon to codon along mRNA
(C) Aminoacylation of tRNA
(D) Binding of ribosome to mRNA at AUG
Choose the correct answer from the options given below:

An electric dipole is kept in an electric field which is increasing in the +x direction.
The dipole moment of the dipole is also along the +x direction.
Which of the following options is correct for the electric dipole?

The interval in which the function \(f(x)=2 x^3+3 x^2-12 x+1\) is strictly increasing, is

Read the following paragraph and answer the given questions:
In order to link the alien DNA, the vector needs to have very few, preferably single, recognition sites for the commonly used restriction enzymes. Presence of more than one recognition site in the vector will generate several fragments, which will complicate the gene cloning. In order to link the alien DNA, the vector needs to have very few, preferably single, recognition sites for the commonly used restriction enzymes. Presence of more than one recognition sites within the vector will generate several fragments, which will complicate the gene cloning. The ligation of alien DNA is carried out at a restriction site present in one of the two antibiotic resistance genes. The recombinant plasmids will lose tetracycline resistance due to insertion of foreign DNA but can still be selected out from non-recombinant ones by plating the transformants on tetracycline containing medium.
The recombinants will grow in ampicillin containing medium but not on that containing tetracycline. But, non- recombinants will grow on the medium containing both the antibiotics. In this case, one antibiotic resistance gene helps in selecting the transformants, whereas the other antibiotic resistance gene gets 'inactivated due to insertion' of alien DNA, and helps in selection of recombinants. Origin of replication (ori) is a sequence from where replication starts and any piece of DNA when linked to this sequence can be made to replicate within the host cells. This sequence is also responsible for controlling the copy number of the linked DNA. So, if one wants to recover many copies of the target DNA it should be cloned in a vector whose origin support has high copy number.
In cloning vector pBR322, the BamH1 site codes for:

If \(A=\left[\begin{array}{cc}1 & 0 \\ \frac{1}{3} & 1\end{array}\right]\) then \(A^{48}\) is :

Ferromagnetic material core used for transformer must have