ECAT 2013 PHYSICS
Note:-Please write the answer in comment box it will help us a lot in finding answer of these questions. 1) If Thermistor Is Placed In Oven If Temp Of oven Is Increased Then resistance will bea) Increases b) Decreases c) Remains same d) None 2) A Body is accelerating downward with 9.8ms-2. If we throw it with some force, then acceleration will be: a) More than 9.8 b) Less than 9.8 c) Equal d) None 3) To Increase Charging of Capacitor a) Resistance Decrease b) Capacitance Increases c) Fixed Capacitance d) None 4) The Angular Frequency Of A Pendulum Is 1 Rad/sec Its Length Will Be : a) 24m b) 9.8m c) 3.98m d) None 5) If 1 micro coulumb charge is pass through wire in 1 micro second then current will be a) lA b) 1uA c) 1mA d) None 6) Orbital speed of stallites going around the earth increased if the distance from earth is...... a) increased b) Decreased c) Remains same d) None 7) a helicopter is ascending vertically at the rate of 19.6ms-1 when it is at a height of 156.8m above the ground.how long the stone takes to reach the ground(Hint:1st year 3rd Ch#1st numerical)? a) 8 sec b) 4 sec c) 2 sec d) None 8) Tesla is a unit of magnetic field is equal to ....? a) Nm/A b) NmA c) N/Am d) None 9) voltage-current graph of non ohmic device is...... a) straight line b) linear c) Parabola d) Hyberbola 10) Ameter is a galvanometer with a a) high resistance connected in parallel b) low resistance connected in parallel c) high resistance connected in series d) low resistance connected in series 11) 100 kg mass 100m radius 36ms-1 speed centripetal force a) 10N b) 100N c) 1000N d) None 12) if power of body is 10 Js-1 then energy of body is a) 1J b) 10J c) 100J d) 1000J 13) a train travelling a sounds a whistle of frequency 5270hz.frequency of sound heard by the driver was a) 5270 b) more than 5270 c) less than 5270 d) None 14) when we tune a radio that means a) capacitance changes b) inductance changes c) resistance changes d) None 14) when we tune a radio that means a) capacitance changes b) inductance changes c) resistance changes d) None 15) the direction of induced current is always so as to oppose the change which causes the current a) Lenz law b) Faraday law c) coulomb's law d) None 16) Milkians method is used to determine? a) e/m of electron b) Charge on electron c) Mass of electron d) None 17) if three resistances R connected in parallel thier equivalent resistance is a) R/3 b) 9R c) 3R d) None 18) if three resistances r connected in series Then thier equivalent resistance is a) 3R b) 9R c) 9/R d) 3/R 19) Voltmeter is a device which have a) high internal resistance b) low internal resistance c) No internal resistance d) None |