There are 15 boys and 10 girls as per the given details, Therefore total strength is 25 The no of ways to select 3 members out of 25 is 25 c 3 =... View Article
Silver - 10.49 Nickel - 8.94 Lanthanum - 6.15 Neptunium - 20.2 Tin - 7.26 Proctatinium - 15.4 The ascending order of the densities of these... View Article
Fog shows up when water vapor, or water in its gaseous form, condenses. During condensation, molecules of water vapor combine to make tiny liquid... View Article
Scattering of light is the phenomenon in which light rays get deviated from its straight path on striking an obstacle like dust or gas molecules,... View Article
Heating output of heater =I2R = v2R1/(R1+R2)2 If R2 is decreased the current (i.e v/R1+ R2) is increased So, the heating output will be higher... View Article
Answer: Distance and displacement are two terms that appear to be identical but have quite different meanings and definitions. The term distance... View Article
The hydrochloric acid in the stomach is already quite dilute; its pH is, in fact, less than 1.5 so that at the extreme maximum there is only 0.03... View Article
One day is one revolution around itself. 1 day is 24 hours, or 1440 min, or 86,400 sec. One year is one revolution around the sun. 1 year is... View Article
Given Cost of chair and table together = Rs 1800 6% profit is made by selling the table at a profit of 15% and the chair at a loss of 10%. To... View Article
The contact forces represent the result of physical contact between two objects, one by which force is exerted and the other on which force is... View Article
According to dietitian Benjamin White, despite their acidic nature citrus fruits are actual an alkalizing agent on the body. “Citrus fruits... View Article
Simple interest for 1 year = 450/2 =225 let x be the principal 9x/100=225 x=2500 2500*(9/100)= 225 capital for the second half year =2725... View Article
Heart continuously pumps oxygen and nutrient-rich blood throughout your body to sustain life. Blood is essential. In addition to carrying fresh... View Article
Here given that, u= -30 cm f= -20 cm By using mirror formula, 1/v + 1/u = 1/f 1/v + 1/-30 = 1/-20 v= -60 cm negative sign indicates that image is... View Article
The moon is only in this position for a single instant in the whole lunar month: the exact time of the full moon, when it is 180 degrees away... View Article
Time taken to travel first half distance = 100/ 50 = 2 hrs Time is taken to travel second half distance = 100/v Average speed = 200/ (2 + 100/v)... View Article
Resistance is proportional to the length of wire and inversely proportional to the area of cross-section. IF length is 1/5th, then Resistance is... View Article
Answer: (C) in accelerated motion The boy is moving constantly at a speed of 10 m/s and since the direction is the same therefore the boy is... View Article