Physics On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because : Plastics have a higher thermal conductivity than metals Plastics have a lower density than metals Metals are good conductors of heat Metals have higher thermal capacity than plastics Plastics have a higher thermal conductivity than metals Plastics have a lower density than metals Metals are good conductors of heat Metals have higher thermal capacity than plastics ANSWER DOWNLOAD EXAMIANS APP
Physics Magnetism in materials is due to Electrons at rest Circular motion of electrons All neutrons at rest Protons at rest Electrons at rest Circular motion of electrons All neutrons at rest Protons at rest ANSWER DOWNLOAD EXAMIANS APP
Physics Find the resistance (in mega) of a wire of length 20m, cross sectional area 1 cm2 and made of a material of resistivity 200m. 4000 2000 80 40 4000 2000 80 40 ANSWER DOWNLOAD EXAMIANS APP
Physics The device used to change the speed of an electric fan is Regulator Rectifier Switch Amplifier Regulator Rectifier Switch Amplifier ANSWER DOWNLOAD EXAMIANS APP
Physics The absolute refractive index of any medium is always: 1 Less than one More than one 1 Less than one More than one ANSWER DOWNLOAD EXAMIANS APP
Physics Consider the following statements :1. There is no net moment on a body which is in equilibrium.2. The momentum of a body is always conserved.3. The kinetic energy of an object is always conserved.Which of the statements given above is/are correct? 1, 2 and 3 1 and 2 only 1 only 2 and 3 only 1, 2 and 3 1 and 2 only 1 only 2 and 3 only ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS