The primary coil of an ideal step up transformer has 200 turns and transformation ratio is 50. The input voltage is 220 V, the voltage across secondary coil will be:

The electric field intensity produced by the radiations coming from a 200 W bulb at 6 m distance is E . What is the electric field intensity produced by the radiations coming from 100 W bulb at the same distance?

A message signal of frequency \(\omega_m\) is superposed on a carrier wave of frequency \(\omega_c\) to get an amplitude modulated wave (AM). The frequency of the AM wave will be :

The current-voltage graphs for a given metallic wire at two different temperatures, \( T_1 \) and \( T_2 \) are shown in the figure. The correct relation of temperatures and resistances will be :

The internal resistance of primary cell is \( 3 \Omega \). It generates a current of \( 0.3 \text{ A} \) in an external resistance of \( 22 \Omega \). The rate at which chemical energy is consumed in providing the current is:

The variation of resistivity of a metallic conductor with temperature is given correctly by which of the following relations?
(Where \( \rho_T \) is the resistivity at a temperature T and \( \rho_0 \) is the resistivity at a reference temperature \( T_0 \), \( \alpha \) is the temperature coefficient of resistivity, \( T > T_0 \))

If \( n_i \) is the concentration of intrinsic charge carriers in a pure semiconductor and \( n_e \) and \( n_h \) be the concentrations of electrons and holes, respectively after the semiconductor is doped, then at thermal equilibrium.

Identify the correct statements with respect to Homo habilis
A. Homo habilis had a brain size of 650-800cc
B. They probably did not eat meat
C. They lived near east and central Asia
D. These were the first human-like creature
Choose the correct answer from the options given below:

The value of differentiation of \(x^7+1\) with respect to \(x^6\) is

The amount of urea required to make a 500 mL solution of 0.25 molarity is
(Molar mass of Urea \(=60 g mol ^{-1}\) )

Identify the incorrect statement(s) among the following:
(A) Two electric field lines of force never intersect.
(B) Two opposite charges, each of \( 10 \times 10^{-9} \, \text{C} \), separated by 5 mm. The magnitude of the dipole moment is \( 5 \times 10^{-11} \, \text{C-m} \).
(C) Electric field intensity due to a single charge varies as the square of the distance from the charge, whereas electric field intensity due to an electric dipole varies inversely as the cube of the distance of the point.
(D) Electric field intensity due to an electric dipole has spherical symmetry around it in space.
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Answer the question on the basis of passage given below :
All transition elements display typical metallic properties like high melting point, boiling point, tensile strength, high malleability and ductility, luster, etc. Their metallic character increases down the group and elements of \(4 d\) and 5d series exhibit higher metallic characters. They show variable oxidation states and forms a number of coloured compounds due to the presence of unpaired electrons which shows d-d transitions and makes them paramagnetic.
Which of the following will be coloured in aqueous medium?

Which of the following are Mendelian disorders?
(A) Cystic fibrosis
(B) Phenylketonuria
(C) Adenosine deaminase deficiency
(D) Haemophilia
Choose the correct answer from the options given below: