Copper wire has a very low resistance compared to iron and is a good conductor of electricity. A long and thin wire of copper will have a higher... View Article
Bernoulli’s principle is true. According to the principle, when there is a horizontal flow of the fluid, points of the higher speed of fluid will... View Article
Thermal conductivity is the property of the material to conduct heat. The gases with a high density like xenon and dichlorodifluoromethane have... View Article
Which of the following is most neglected while doing calculations for finding maximum work Potential energy Kinetic energy Both kinetic... View Article
The universe is considered as an isolated system. According to the second law of thermodynamics, the entropy of the isolated system always... View Article
When there is an increase in temperature, entropy increases because the kinetic energy of the molecules increases when the temperature increases.... View Article
Entropy is a physical quantity that needs a direction of time. The direction of time is called the arrow of time. The entropy change with time... View Article
When glucose is added to water it readily dissolves but it does not dissociate into ions. Therefore, the glucose solution is a non-electrolyte... View Article
The shear angle is the angle made by the shear plane with the work surface. When the shearing angle is high, the shearing plane becomes smaller... View Article
Not all the capacitors have polarity. Small ceramic capacitors do not have any polarity. For electrolytic capacitors with polarity, the polarity... View Article
The discharge time of the TV capacitor depends on the type of TV. Some of the capacitors discharge within minutes and few may take hours to... View Article
The capacitor gets charged to the battery voltage before it is disconnected from a battery. When the battery is disconnected from the capacitor,... View Article
1) j 2) i 3) k 4) 0 Answer: (2) i Solution: Midpoint of line = ((1+1)/2,(1-1)/2,(-1+1)/2) M = (1,0,0) Position vector of M = i+0j+0k = i... View Article
1) trapezium 2) rectangle 3) parallelogram 4) None of these Answer: 4) None of these Solution: Given, four points, say PQRS such as i+j-k,... View Article
1) √13 units 2) 2√5 units 3) 5 units 4) 10 units Answer: (3) 5 units Solution: Let AD is the median of the triangle Position of the... View Article
1) –2 and – 1 2) –2 and 1 3) 2 and –1 4) 2 and 1 Answer: (4) 2 and 1 Solution: Given, A, B and C with position vectors 2i-j+k and i-3j-5k... View Article
