Physics question and answers for July 20, 2024
- Q R A spherical part of radius 2 bigger solid sphere of radius R Assuming uniform mass distribution shift in the centre of mass will b 17 RIN RI 7 R...
- Q The drift velocity of the electrons in a current carrying metallic conductor is of the order of 1 10 m s 2 108 m s 3 10 m s 4...
- Q 270 Four wires of equal length and of resistances 10 ohms each are connected in the form of a square The equivalent resistance between two opposite corners of the square...
- Q The activity of a radioactive sample is measured as 9750 counts per minute at t 0 and as 975 counts per minute at t 5 minutes The decay constant is...
- Q An AIR station is broadcasting the waves of wavelength 300 metres If the radiating power of the transmitter is 10 kW then the number of photons radiated per second is...
- Q Supe A block rests on an inclined plane making an angle of 30 with the horizontal The coefficient of static friction between block and the plane is 0 8 If...
- Q Equivalent resistance between A and B will be ww 3023 A 352 302 352 1 1 2 ohm 2 18 ohm 3 6 ohm 4 3 6 ohm 30 352...
- Q The equivalent resistance of resistors connected in series is always 1 Equal to the mean of component resistors 2 Less than the lowest of component resistors 3 In between the...
- Q 29 The length of each side of cubical vessel is If charge q is placed at one of the vertices of the cube as shown in the figure then flux...
- Q 11 A ladder of mass M and length L is supported in equilibrium against a smooth vertical wall and a rough horizontal surface If 0 be the angle of inclination...
- Q 32 The network shown in the figure is a part of a complete circuit If at a certain instant the current i 1 A and potential at point A and...
- Q 20 The resistance of the resistor shown below is De Violet Green Orange Gold 1 75 x 10 2 5 3 75 10 10 2 74 x 10 2 5...
- Q An insect crawls up a hemispherical surface very slowly The coefficient of friction between the insect and the surface is 1 3 If the line joining the center of the...
- Q Diagram shows symmetrically placed rectangular insulators with uniformly charged distributions magnitude Enet is equal At the origin the net field YA of of X O aligned with the negative x...
- Q 25 Total uniform charge on a sphere of radius 2 cm 10 C The maximum electric field due to the spher is Nendation mited 1 2 25 N C 3...
- Q 2 The position of a particle moving along x axis given by x 2t 3t 5 m The acceleration of particle at the instant its velocity becomes zero is 1...
- Q An atomic power nuclear reactor can deliver 300MW The energy released due to fission of each nucleus of uranium atom U238 is 170 MeV The number of uranium atoms fissioned...
- Q 16 The current through the 2 2 resistor in the circuit shown below is 5 volt 1 3 A from a to b 2 3 A from b to a...
- Q A projectile is thrown horizontally from top of a tower of height 20 m with a velocity 10 m sec It strikes the smooth ground whose co efficient of restitution...
- Q of a rent ual 36 If a current flows in an 2 AC circuit across which an AC potential of V Vosinot has been applied then the average power consumption...
- Q 39 The inductance of a closed packed coil of 400 turns is 8 mH A current of 5 mA is passed through it The magnetic flux per turn is Ho...
- Q 1 Mg equilibrium against a smooth vertical wall and a rough horizontal surface If 0 be the angle of inclination of the rod with the horizontal then normal reaction of...
- Q Q3 If a resistance coil is made by joining in parallel two resistances each of 2012 An emf of 2V is applied across this coil for 100 seconds The heat...
- Q A particle of mass m is taken with a constant speed v along the elliptical orbit as shown in figure semi major axis length a and semi minor axis length...
- Q A particle starts from rest and moves along x axis The acceleration a varies with its displacement x as a 2 x m s Find magnitude of acceleration of particle...
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