Physics A parallel-plate capacitor,with air in between the plates, has capacitance C. Now the space between the two plates of the capacitor is filled with a dielectric of dielectric constant 7. Then the value of the capacitance will become 7C 14C C C/7 7C 14C C C/7 ANSWER DOWNLOAD EXAMIANS APP
Physics What device converts light energy to electrical energy? Photovoltaic cell Thermocouple Photodiode Heliostats Photovoltaic cell Thermocouple Photodiode Heliostats ANSWER DOWNLOAD EXAMIANS APP
Physics The sensation of weightlessness in a spacecraft in an orbit is due to the Acceleration in the orbit which is equal to the acceleration due to gravity outside Presence of gravity outside but not inside the spacecraft Absence of gravity outside Fact that spacecraft in the orbit has no energy Acceleration in the orbit which is equal to the acceleration due to gravity outside Presence of gravity outside but not inside the spacecraft Absence of gravity outside Fact that spacecraft in the orbit has no energy ANSWER DOWNLOAD EXAMIANS APP
Physics A man stands in a lift which accelerates upwards. The resultant reaction force on the floor of the lift is Greater than the weight of the man Zero Less than the weight of the man Same as the weight of the man Greater than the weight of the man Zero Less than the weight of the man Same as the weight of the man ANSWER DOWNLOAD EXAMIANS APP
Physics What should a person on a freely rotating turn table do to decrease his (angular) speed ? Bring his hands together Sit down with raised hands Raise his hands up Spread his hands outwards Bring his hands together Sit down with raised hands Raise his hands up Spread his hands outwards ANSWER DOWNLOAD EXAMIANS APP
Physics An aeroplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically at a point A on the ground a bomb is released from it. The bomb strikes the ground at point B. The distance AB is 33 km 1200 m 0.33 km 3.33 km 33 km 1200 m 0.33 km 3.33 km ANSWER DOWNLOAD EXAMIANS APP
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