Physics What is the minimum distance (in metres) required to hear an echo? 10 17 21 13 10 17 21 13 ANSWER DOWNLOAD EXAMIANS APP
Physics Safety fuse wire used in domestic electrical appliances is made of metal of low Specific gravity Conductance Melting point Resistance Specific gravity Conductance Melting point Resistance ANSWER DOWNLOAD EXAMIANS APP
Physics What type of simple machine is an axe? The screw Both A & B Lever Wedge The screw Both A & B Lever Wedge ANSWER DOWNLOAD EXAMIANS APP
Physics A periscope works on the principle of Total internal reflection Reflection Refraction Diffraction Total internal reflection Reflection Refraction Diffraction ANSWER DOWNLOAD EXAMIANS APP
Physics Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons? 3.3 km, 0.30 km 2.2 km, 0.20 km 2.8 km, 0.25 km 1.8 km, 0.15 km 3.3 km, 0.30 km 2.2 km, 0.20 km 2.8 km, 0.25 km 1.8 km, 0.15 km ANSWER DOWNLOAD EXAMIANS APP
Physics A hydrogen balloon floats up because of Air pressure decreases with decrease in weight Weight of the balloon is less than the weight of air displaced by it. Air pressure decreases with decrease in height The pressure inside the balloon is more than the pressure outside it Air pressure decreases with decrease in weight Weight of the balloon is less than the weight of air displaced by it. Air pressure decreases with decrease in height The pressure inside the balloon is more than the pressure outside it ANSWER DOWNLOAD EXAMIANS APP