Physics question and answers for September 05, 2024
- Q Distance between plates of a parallel plate charged capacitor disconnected from battery is increased The quantity that remains constant is Potential difference between plates Charge Electric field between plates
- Q A capacitor of capacitance 2 mF is charged to a potential of 10 V The capacitor is now connected to an identical capacitor charged to a voltage 20 V such...
- Q The root mean square velocity of molecules of a gas is 200 m s What will be the root me square velocity of the molecules if the molecular weight is...
- Q Since diodes are destroyed by circuits must have Select one a higher current sources b more dopants c higher voltage sources O d current limiting resistors O
- Q An electric dipole placed in a uniform electric field of magnitude 2 N C experiences a maximum torque of magnitude 5 10 N m If the charges of the dipole...
- Q 3 Three long coaxial conducting cylindrical shells have radii R 2R and 2 2 R Inner and outer shells are connected to each other The capacitance across middle and outer...
- Q The axle of a uniform cylinder of mass m and radius R is connected to a spring of spring constant k as given A horizontal uniform board of mass m...
- Q A supply voltage of 230 V 50 Hz is fed to a residential building Write down its equation for instantaneous value Select one a 163 sin 314 16t O b...
- Q A conical container height h Radius of base R a spherical container Radius 3R and a cylindrical container height h Radius of base 2R each contain a charge Q inside...
- Q monoatomic gas of pressure P having volume V expands isothermally to a volume 2 ad then adiabatically to a volume 16V The final pressure of the gas is atio of...
- Q 22 Consider the situation as shown in the figure The work done in taking a point charge from point P to A is WA from P to B is WB...
- Q Three identical coils connected in delta to a 400V 3 phase supply take a total power of 50kW and a line current of 90 A Find phase current and power...
- Q A steel rod of length 1 0 m area of cross section 1 cm is clamped between tw rigid support The tension developed in the rod on cooling the rod...
- Q A Fill in the blanks 1 The quantities which are unique and do not depend on other quantities are called 2 3 4 5 6 quantities Decametre is of metre...
- Q A wire carrying current i is kept in x y plane 2 X along the curve y Asin A uniform magnetic field B exists in the Z direction The magnitude...
- Q An object weighs m in liquid of density p and that in a liquid of density P2 weighs m2 The density of object is M P2 M P1 m m...
- Q In a potentiometer arrangement of a cell of emf 2 V gives a balance at 40 cm length of wire Now when the cell is replaced by another cell the...
- Q A dip circle is oriented with its piane at an angle o 30 with the magnetic meridian at a place The apparent angle of dip shown by the dip circle...
- Q 19 A cylinder is pure rolling up an incline plane It stops momentarily and then rolls back The force of friction 1 on the cylinder is zero throughout the journey...
- Q A steel wire of length 4 2 m and cross sectional area 3 x 10 5 m stretches by the same amount as a copper wire of length 3 5...
- Q Q Electron in a Magnetic Field An electron of charge 1 6 x 10 19 C and velocity 2 35 x 107 ms moves p pendicularly to a magnetic field...
- Q 1 A man of mass M stands at one end of a plank of length L which lies at rest on a frictionless surface The man walks to other end...
- Q resistance as seen at ab are respectively W 10S2 wwa 552 O10v 102 V Select one a 5V 10 ohm O b 54V 15 ohm O c 10V 10 ohm...
- Q A pulley is hinged at the centre and a massless thread is wrapped around it The thread is pulled with a constant force F starting from rest As the time...
- Q A sinusoidal voltage is represented as v 141 4sin 314 18t 2 Its rms value of voltage and frequency respectively Select one O a 141 42V 314 16Hz O b...
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