applied physics d

;"> 21. A potential difference of 20 V is applied across the ends of a resistance of 5 D. The current through the resistance is a) 100 A b) 25 A c) 4 A d) 0.25 A. [c] 22. Which one of the following is the correct statement of Ohm's law? a) At constant temperature, the ..

Cl 2 tube is proportional-to (1) vapour pressure of solvent (2) vapour pressure of solution (3) vapour pressure of solvent and solution (4) lowering of vapour pressure ^ 39. What is the relative lowering of vapour pressure when 12 g of urea is dissolved in 90 g of water (1) 0.025 pascal (2) 0.062 p..

="font-size: small;"> opaque and soft cornea. Stratification and kera Stratification and keratinization in linings of respiratory passages, urinary bladder, ureters and intestinal mucosa; nightblindness; impaired growth, glandular secre tion and reproduction. 11. Vit. DErgoca- Iciferol (C..

/? in the same direction as in the first half cycle [see Fig. 18.11 (>)]. During the second half cycle the current flows in the direction DCBAR l B 2 EFB i R 2 D. Since in the external circuit the current flows only in one direction it is called direct current (D.C). The vari..

Two vectors represented in space can be added by applying triangular law twice. The same concept can be extended to addition of more than two vectors by repeated additions. The addition of vectors are simple if the vectors are expressed in component form. The addition is just an addi..

The charge flow towards AB continues, until the repulsive electric force exerted by the charges already reached AB on charges drifting through the conductor, is equal and opposite to the deflecting magnetic force on it. After that, no charge gets displaced towards AB. Let V H..

1. Ammonia is a colourless gas. 2. It has a pungent odour with and an alkaline or soapy taste. When inhaled suddenly, it brings tears into the eyes. 3. It is lighter than air, and collected by downward displacement of air. 4. It is highly soluble in water: one volume of water disso..

a) A physical change is temporary and is usually reversible. b) No new substances are formed during a physical change. c) There is no change in mass of the substance during a physical change. d) There is no net absorption or release of energy during a ..

They are given in table 7.1. Freshly cut sodium is silvery white. But when placed in air, it is tarnished. Therefore, it is stored in inert solvents like kerosene. Sodium is a soft metal. It gives the characteristic D ] (5890 A ) and D 2 (5896 A ) emis..

by a star in all directions per is called luminosity (L) of the star. From Stefan's law, the luminosity of a star of radius R having surface temperature T is given by L = 47ir 2 oT 4 wl^e a is the Stefan's constant. The amount of light energy received per unit time per unit ar..