821 Ohm is a unit of measuring _________? Physics Medium Full question → A Resistance B Voltage C Current D None of these
822 An artificial satellite revolves round the Earth in circular orbit, which quantity remains constant? Physics Medium Full question → A Angular Momentum B Angular Displacement C Linear Velocity D None of the above
823 If a lift is going up with acceleration, the apparent weight of a body is: Physics Medium Full question → A More than the true weight B More or less the true weight C Less than the true weight D Equal to the true weight
824 With the increase of pressure, the boiling point of any substance: Physics Medium Full question → A Decreases B Increases C Remains same D Becomes Zero
825 Which one of the following has the highest value of specific heat? Physics Medium Full question → A Water B Alcohol C Methane D Kerosene
826 If electrical conductivity increases with the increase of temperature of a substance, then it is a: Physics Medium Full question → A Semiconductor B Conductor C Insulator D None of the above
827 Young’s modulus is the property of __________? Physics Medium Full question → A Gas only B Liquid only C Solid only D All of the above
828 Which of the following is used to control rods in nuclear fission? Physics Medium Full question → A Graphite B Heavy Water C Cadmium D All of these
829 Tick the correct statement_________________? Physics Medium Full question → A Moderators slow down the neutrons B Moderators bring the neutrons to rest C Moderators absorb the neutrons D Moderators reflect the neutrons
830 Atom is the smallest particall which is_________? Physics Medium Full question → A Indivisible B Divisible C Both D Non of these
831 Potential energy means? Physics Medium Full question → A Due to position of object B Due to motion of object C Due to gravity D None of these
832 A ball is thrown towards the earth and bounce back. During this process: Physics Medium Full question → A Direction of velocity and acceleration changes B Direction of Displacement and acceleration changes C Direction of Displacement and Velocity changes D Direction of Displacement, Velocity and acceleration changes
833 An object travels at constant speed around a circle of radius 1.0 m in 2.0 seconds. What is the magnitude of its acceleration? Physics Medium Full question → A 0 B π2 C 2 π 2 D 4 π 2
834 A football is kicked at 45 degrees with horizontal with K.E of E. Its K.E. at highest point is Physics Medium Full question → A Zero B E/2 C E D E/(2) 1/2
835 The internal energy of the system increases__________? Physics Medium Full question → A in adiabatic expansion B in adiabatic compression C in isothermal expansion D in isothermal compression
836 What is the ratio of the velocity of sound at 4 atmosphere to that at 1 atmosphere? Physics Medium Full question → A 4 : 1 B 1 : 1 C 2 : 1 D 1 : 2
837 The first overtone of a stretched string of given length is 320 Hz. The first harmonic is_________? Physics Medium Full question → A 320 Hz B 640 Hz C 160 Hz D 480 Hz
838 Two identical metal balls with charges + 2Q and – Q are separated by some distance, and exert a force F on each other. They are joined by a conducting wire, which is then removed. The force between them will now be_________? Physics Medium Full question → A F B F/2 C F/4 D F/8
839 A million electron are added to a pith ball. Its charge is________? Physics Medium Full question → A – 1.6 × 10 –12 coulomb B – 1.6 × 10–13 coulomb C – 1.6 × 10 –18 coulomb D – 1.6 × 10 coulomb
840 A cube of side 5 cm has a charge of 6 C. The surface density of charge is_________? Physics Medium Full question → A 100 C m –2 B 200 C m –2 C 300 C m –2 D 400 C m–2