Arrange the following steps for working of a full wave rectifier in correct sequence

(A) During the negative half cycle, \( D_1 \) is reverse biased while \( D_2 \) is forward biased.
(B) During the positive half cycle, \( D_1 \) is forward biased while \( D_2 \) is reverse biased.
(C) A pulsating d. c. voltage is obtained across \( R_L \).
(D) a. c. input is given to the primary of a centre-tap transformer.
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A circular coil of 100 turns and area of cross-section \( 10^{-2} \text{ m}^2 \) is rotated about its vertical diameter at 60 rpm in a uniform horizontal magnetic field of \( 3.5 \times 10^{-2} \text{ T} \). The maximum emf induced in the coil is:

Match List-I with List-II

List-I	List-II
(A) Shunt resistance	(I) infinite resistance
(B) Ammeter resistance	(II) connected in parallel with the galvanometer coil
(C) An ideal voltmeter	(III) zero resistance
(D) An ideal ammeter	(IV) less than that of the shunt resistance

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A 15 cm wire carrying a current of 2 A is placed inside a current-carrying solenoid, perpendicular to its axis. The magnetic force acting on the wire is \( 20 \times 10^{-2} \text{ N} \). The magnetic field inside the solenoid is :

The distance between an object and its virtual image of magnification \( \frac{1}{2} \) as produced by a lens is 20 cm.
The focal length of the lens is

The given graph shows the variation of terminal potential difference V, across the combination of three identical cells in series to an external resistor versus the current i in the circuit. The internal resistance of each cell is :

Carbon, silicon and germanium have four valence electrons each. Their valence and conduction bands are separated by energy gap \( E_g \). If we represent \( (E_g)_C, (E_g)_{Si} \) and \( (E_g)_{Ge} \) as their respective energy gaps, then which of the following is true

Read the given passage carefully and answer the questions
Antibiotics have greatly improved our capacity to treat deadly diseases such as plague, whooping cough (kali khansi), diphtheria (gal ghotu) and leprosy (kusht rog), which used to kill millions all over the globe.
Streptokinase produced by the bacterium Streptococcus and modified by genetic engineering is used as a 'clot buster' for removing clots from the blood vessels of patients who have undergone myocardial infarction leading to heart attack. Microbes are diverse-protozoa, bacteria, fungi and microscopic animal and plant viruses, viroids and also prions that are proteinacious infectious agents. The puffed-up appearance of dough is due to the production of CO₂ gas. Similarly the dough, which is used for making bread, is fermented using baker's yeast (Saccharomyces cerevisiae). Primary sewage treatment basically involve physical removal of particles - large and small from the sewage through filtration and sedimentation. These are removed in stages; initially, floating debris is removed by sequential filtration. Then the grit (soil and small pebbles) are removed by sedimentation. All solids that settle form the primary sludge, and the supernatant forms the effluent. The effluent from the primary settling tank is taken for secondary treatment. The primary effluent is passed into large aeration tanks, where it is constantly agitated mechanically and air is pumped into it. This allows vigorous growth of useful aerobic microbes into flocs. While growing, these microbes consume the major part of the organic matter in the effluent.
Prions are made up of :

The first clinical gene therapy was given to a 4-year old girl with:

The domain of the function f(x) = \(\frac{x^2+1}{x^2-3 x+2}\) is

Observe the given figures and answer the question

Identify the statements which hold true for Miller's experiment:
(A) He created an electric discharge in a closed flask containing CH4, N2, NH3 and water vapour at 1200°°C
(B) He created electric discharge in a closed flask containing CH4, N2, NH3 and water vapour at 800°C
(C) He observed the formation of amino acids only
(D) He observed the formation of amino acids, sugars and fats
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The structures present in human sperm are-
(A). Nucleus
(B). Zona pellucida
(C). Acrosome
(D). Mitochondria
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5 M sugar solution is \(30 \backslash \%\) sugar by mass. Calculated density of the solution will be, given that molecular weight of sugar is \(342 g mol ^{-1}\).