A plane concave lens of glass (\( \mu = 1.5 \)) has a radius of curvature of its curved face 50 cm. The power of the lens is :

The mass of the chlorine \( {}_{17}^{35}\text{Cl} \) nucleus is 34.98 amu, which has protons of mass 17.133025 amu and neutrons of mass 18.155970 amu.
The binding energy of the nucleus is nearly:

Arrange the following waves in the increasing order of their wavelengths:
(A) Visible light waves
(B) Microwave waves
(C) Infrared waves
(D) AM radio waves
Choose the correct answer from the options given below:

In a Young's double slit experiment, interference fringes were produced on a screen placed 1.8 m from the two slits 0.3 mm apart and illuminated by light of wavelength 600 nm. The fringe width is

According to Bohr's Model :
(A) The radius is directly proportional to 'n'.
(B) The speed is directly proportional to \(\frac{1}{n} \) .
(C) The magnitude of total energy is directly proportional to \(\frac{1}{n^2} \).
(D) The radius is directly proportional to \(n^2\)

A capacitor of capacitance C is first charged by a battery of V volts. It is disconnected from the battery and is filled with a dielectric of dielectric constant K. The ratio of energy stored in the two cases, respectively will be

The phase difference between the output and input of a common emitter amplifier is :

The simplest form of \(\tan ^{-1}\left(\frac{\sqrt{1+x^2}-1}{x}\right), x \neq 0\) is:

A diode having potential difference 0.5 V across its junction which does not depend on current, is connected in series with a resistance of \( 20 \Omega \) across a source. If 0.1 A current passes through the resistor, the voltage across the source is :

Read the passage carefully and answer the given questions.
Recombinant DNA Technology
Asexual reproduction preserves the genetic information, while sexual reproduction permits variation. Traditional hybridization procedures used in plants and animals breeding very often lead to inclusion and multiplication of undesirable genes along with the desired genes. The techniques of genetic engineering, which include creation of recombinant DNA, use of gene cloning and gene transfer, overcome this limitation and allow us to isolate and introduce only one or a set of desirable genes without introducing genes into the target organism.
Which one of the following techniques is used to amplify a specific DNA
sequence?

Area of a rectangle having vertices \(P, Q, R\) and \(S\) with position vectors \(-\hat{i}+\frac{1}{2} \hat{j}+4 \hat{k}, \hat{i}+\frac{1}{2} \hat{j}+4 \hat{k}, \hat{i}-\frac{1}{2} \hat{j}+4 \hat{k}\) and \(-\hat{i}-\frac{1}{2} \hat{j}+4 \hat{k}\) respectively is :

Henry was the first to give a quantitative relation between pressure and solubility of a gas in a solvent.
Choose the correct statement given by Henry.

Match List-I with List-II

LIST – I (Electrolytes)	LIST – II (Examples)
(A) Non-electrolyte	(I) Sucrose, urea
(B) Binary electrolyte	(II) KCl, \(CH _3 COOH\)
(C) Quaternary electrolytes	(III) \(H _2 SO _4\) \(BaCl _2\)
(D) Ternary electrolyte	(IV) \(AlCl _3\) \(K _3 PO _4\)

Choose the correct answer from the options given below: