In photoelectric effect, the stopping potential depends on the

A p-type semiconductor can be obtained by doping of:

Match List-I with List-II:

List-I	List-II
(A) Current	(I) Opposition to flow of current
(B) Resistance	(II) Rate of flow of charge
(C) Resistivity	(III) Work done per unit charge
(D) EMF	(IV) Resistance per unit length \( \times \) unit cross sectional area

Choose the correct answer from the options given below:

Resolving power of a telescope can be increased by increasing :

The winding of the solenoid with 1000 turns per meter, core material with relative permeability 400 and carrying a current of 2 A, the magnetisation (M) is approximately given by :

Match List-I with List-II

LIST - I (Statement)	LIST - II (Energy band diagram)
(A) An intrinsic semiconductor at \(T =0 K\)	(I)
(B) An intrinsic semiconductor at \(T >0 K\) with thermally generated electron-hole pairs.	(II)
(C) Energy bands of n-type semiconductor at \(T >0 K\)	(III)
(D) Energy bands of p -type semiconductor at \(T >0 K\)	(IV)

Choose the correct answer from the options given below:

The wavelength of Red light in the visible region is about 760 nm. The energy of photon in that case will be :

Two capacitors of capacitances \(3 \mu F\) and \(6 \mu F\) are charged to potentials of \(2 V\) and \(3 V\), respectively. Now, if they are connected in parallel, the charge on each of the two capacitors, will be

The shortest distance between the lines \(l_1\) and \(l_2\) given by
\(l_1: \vec{r}=\hat{i}+2 \hat{j}-4 \hat{k}+\lambda(2 \hat{i}+3 \hat{j}+6 \hat{k})\) and \(l_2: \vec{r}=3 \hat{i}+3 \hat{j}-5 \hat{k}+\mu(2 \hat{i}+3 \hat{j}+6 \hat{k})\) is :

Read the passage carefully and answer the questions:
Optically active polyhydroxy aldehydes or ketones or molecules which provide such units on hydrolysis are called carbohydrates. They can be broadly classified as monosaccharides, disaccharides and polysaccharides depending on their behavior towards hydrolysis. They are also classified as reducing or non-reducing sugars. Another class of biomolecules is proteins which are polymers of twenty different amino acids linked by peptide bonds. Amino acids can be classified as acidic, basic or neutral depending on the relative number of amino and carboxyl groups in their
molecule. The essential amino acids cannot be synthesized by our body and hence must be provided through diet. Nucleic acids are the polymers of nucleotides which in turn consist of a base, pentose sugar and phosphate. There are two types of nucleic acids namely, DNA and RNA which differ in the composition of sugar and a base
The sugar moiety in DNA and RNA molecules, respectively, are

A body oscillate with SHM according to equation (SI unit),
\( x = 10 \cos(2\pi t + \pi/4) \)
at t= 1.5 s, calculate the speed of the body.

Two waves of amplitudes 3 m and 2 m, respectively superimpose at a point in the same phase. The resultant amplitude would be

The bond between two successive nucleotides in RNA is