Physics question and answers for July 17, 2024
- Q Q10 For the circuit shown in the figure the value of R must be R www 1A 1 30 2 4 3 5 4 6 1 40 R 2 1A...
- Q 103 In the figure shown one of the curves is for adiabatic process and one the curves is for isothermal process The most probable curve for adiabatic process is given...
- Q Potential energy curve Sinusoidal is shown graphically for a particle The potential energy does not depend on y and z coordinates The maximum value of corresponding conservative force in magnitude...
- Q Question For a simple harmonic oscillator of mass m 10 kg and amplitude A 2 m the variation of potential energy U as a function of displacement x from mean...
- Q Seven homogeneous bricks each of length L are arranged as shown in figure Each brick is displaced with respect to the on in contact by L 10 Find the x...
- Q A uniform rod of length and mass m is free to rotate in a vertical plane about a wedge A The roc initially in horizontal position is released The initia...
- Q D ALLEN Two coils A and B having turns 300 and 600 39 respectively are placed near each other On passing a current of 3 0 ampere in A the...
- Q 39 A 100 Hz sinusoidal wave is travelling in the positive x direction along a string with a linear mass density of 3 5 x 10 3 kgm 1 and...
- Q B C J May be used as a rectifier because it offers a relatively low resistance for a forward bias and very high resistance for a reverse bias May be...
- Q Locate the position of the point P as seen by the eye in the figure below O4 cm above P 10 cm above P 30 cm 20 cm 20 cm...
- Q Q20 Current I as shown in the circuit will be 1 10 A 2 20 A 3 3 A 4 20130 A 692 wwwww 392 69 69 wwwww 10 V...
- Q Q17 The drift velocity of free electrons in a conductor is v when a current i is flowing in it If both the radius and current are doubled then drift...
- Q RAI n angle 90 the resultant is 2k 1 p Q Prove that tan 0 b k k 1 bos 2 The resultant of the two vectors P and 2P...
- Q Q19 The equivalent resistance between A and B is Be 1 30 2 6 3 9 4 120 992 992 392 A 99 99 74 From NCERT
- Q 94 A cubical container was initially full with a lic container is now accelerated horizonta acceleration a such that one third of the spilled out Find the value of a...
- Q single layer conducting coil is wound with no gap between adjacent urns on a cylindrical frame of radius R Diameter of cross section of the vire used is d d...
- Q ang s double slit experiment is performed in air central maxima is obtained on screen at some position Two slabs are placed in front of two slits S and S...
- Q 45 A charge particle of charge q and mass m enters in a given magnetic field B and perpendicular to the magnetic field as shown in the figure It enters...
- Q Catalyst 85 Two particles of equal mass m are connected by a spring of spring constant K kept on a smooth floor Each of the bodies are given equal speed...
- Q itor is charged to a potential of 5 V and then connected to position 1 with the shown polarity for 1s After 1s it is connected across the inductor at...
- Q in ncert in page 379 chapter waves and in page 389 sum ry boundary condition equation of reflected wave are gi en differnt which is correct equation with or equatic...
- Q 4 X 2 2 A student measures the distance traversed in 8 free fall of a body initially at rest in a given time He uses this data to estimate...
- Q 34 Two sound waves move in the same direction If the average power transmitted across a cross section by them are equal while their wavelengths are in the ratio of...
- Q The temperature difference between the hot and cold end of a thermally conducted body is increased from 10 C to 20 C then thermal conductivity of body b becomes double...
- Q 3 A small ball is projected from point P on floor towards a wall as shown It hits the wall when its velocity is horizontal Ball reaches point P after...
- Q In radioactive decay process the negatively charged emitted B particles are The electrons orbiting around the nucleus The electrons produced as a result of collision between atoms The electron present...
- Q d None of the above In a deflection magnetometer the needle is short and the pointer is long because the a needle cannot be made long b circular scale cannot...
- Q A small bar magnet P is moving with a constant velocity v towards a fixed conducting ring of radius a along its axis as shown in the figure Electrical resistance...
- Q 101 A light ray takes t time to travel a distance x in air The same light ray takes 8t time to travel 3x distance in a medium then the...
- Q The materials suitable for making electromagnets sho have a high retentivity and high coercivity b low retentivity and low coercivity c high retentivity and low coercivity d low retentivity and...
- Q zero dip c zero declination d equal declination mig lasinsv nols onil Two magnets have the same length and the same pole strength But one of the magnets has a...
- Q 53 In an astronomical telescope in normal adjustment a straight black line of length L is drawn on inside part of objective lens The eye piece forms a real image...
- Q 19 Compute the additional velocity required by a sa orbiting around earth with radius 2R to become from earth s gravitational field Mass of earth is M 2 1 a...
- Q Answer should be third Energy required to move an Earth s satellite of mass m from an orbit of radius R to 5R is M mass of earth R radius...
- Q Figure shows the initial velocity and acceleration of a body The direction and absolute value of the acceleration remain constant Find the time and radius of curvature when the velocity...
- Q permeability versus magnetic intensity H has the following shape PrA a c Hra H H teria b d Hr A Mr A H H
- Q A ball thrown upward from the top of tower with speed v reaches the ground t1 second If this ball is thrown downw ard from the top of the same...
- Q 35 The fundamental frequency of a sonometer wire of length lis fo A bridge is now introduced at a distance of Al from the centre of the wire Al 1...
- Q A metal ball of radius a is surrounded by a conducting medium extended upto infinity The resistivity of the medium varies as p pr where r is the distance from...
- Q 2 A bob is suspended by means of a light string of length from a rigid support When the bob is in equilibrium it is given a horizontal velocity of...
- Q large cruise ship of mass 6 60 x 107 kg has a speed of 10 4 m s at some instant a What is the ship s kinetic energy at...
- Q ilance shift hould 1 122 it circuit th cell mf emf 2 iternal oint of hen a circuit nifts to The 131 Current Electricity 20 Pick out wrong statement about...
- Q A solenoid 1 0m long and 0 04 m diameter has 700 turns Another solenoid of 50 turns is tightly wound over the first solenoid Then the emf induced in...
- Q 17 The block is placed on a frictionless surface Ill gravity free space A heavy string of a mass m is connected and force Fis applied on the string then...
- Q A small flat search coil of area 4 cm with 20 closely wound turns is positioned normal to the field direction and then quickly snatched out of the field region...
- Q c 2 If a magnet is hanged with its magnetic axis then it stops in a magnetic meridian c angle of dip anet of magnetic b geometric meridian d None...
- Q A stone projected at an angle of 60 from the ground level strikes at an angle of 30 on the speed of projection of the stone in m s Take...
- Q Sir answer given is 2 into 10 to the power 2 I am not getting its answer please explain in detail
- Q Figure shows wave fronts coming form a source at equal interval of 10 3 milli second Frequency of wave emitted by source is 300 Hz XX is line along common...
- Q Width of a river is 60m A saimmer wants to cross the river such that he reaches from A to B directly Point 8 is 45m ahead of line AC...
- Q 3 5a 2 4 5a y A particle of masss m is suspended by a spring if 7 frequency of its oscilation is n cm k here c is a...
- Q Two blocks are placed at rest on a smooth fixed inclined plane A force Facts on block of mass m and is parallel to the inclined plane as shown in...
- Q no For a simple harmonic oscillator of mass 10 kg and amplitude A 2m the variation of potential energy U as a function of displacement x from mean position is...
- Q For a rigid body we know that if various forces at various points in it the resultant motion is as translation and a net torque at the CM causing net...
- Q A man can swim with a velocity v relative to water He has to cross a river of width d flowing with a velocity u u v The distance through...
- Q A stone is thrown vertically upwards with a velocity of 19 6 m s After 2 second another stone is thrown upwards with a velocity of 9 8 m s...
- Q A particle is projected from point A that is at a distance 4R from the centre of the earth with speed v in a direction making 30 with the line...
- Q As shown in the figure P and Q are two coaxial 32 fa fa fennta conducting loops separated by some distance When the switch S is closed a clockwise current...
- Q ed green and violet light are falling on the refracting face of a prism all at the same angle of incidence If their angles of deviation are 8 82 and...
- Q 114 A body is projected vertically up from ground After 2 seconds it is at a point P and further in took 4 seconds from P to reach ground Them...
- Q 32 The radii of circular orbits of two satellites A and B of the earth are 4R and R respectively If the speed of satellite A is 3 V the...
- Q Three long wires carrying current 10 A 20 A and 30 A are placed parallel to each other as shown Point P and Q are in midway of wires What...
- Q 5 Which of the following sentences are correct 2 Points To observe the interference due to thin film is illuminated by extended source thickness of the film should be much...
- Q A battery of emf V volt resistance R and R a capacitance C and switches S and S are connected in an electrical circuit as shown in figure The capacitor...
- Q e charge Q in order to make the net force on q to be zero PTIONS A 9 Solution Let the distance between the charges 4g and q be 1...
- Q The small current in reverse bias condition are due to A B D Electrons Majority charge carriers i e electrons on n side and holes on p side Minority charge...
- Q A particle starts moving with velocity v 1 m s and acceleration a 1 m s radius of curvature of the particle at t 1 sec A 5 m C...
- Q S a 6 23 A particle having charge q enters a region of uniform magnetic field B directed inwards and is deflected as shown The magnitude of the momentum of...
- Q 0 4 1 8 10 H A conducting rod AC of length 41 is rotated about 40 a point O in a uniform magnetic field B directed into the paper...
- Q 1 3 75 10 N 2 3 75 10 N x 3 3 75 10 N 4 3 75 10 N 5 A metallic ring connected to a rod oscillates...
- Q Two short magnets of equal dipote moments M are fastened perpendicularly at their centres as given in the figure The magnitude of the magnetic field at a distance d from...
- Q 16 Two wires AO and OC carry equal currents i as shown in figure One end of both the wire extends to infinity Angle AOC is a The magnitude of...
- Q uniform 42 In a certain region of space there exists a constant and magnetic field of induction B The width of the magnetic field is a A charged particle having...
- Q 4 A soap film of RI 1 33 and thickness t is illuminated by light of wavelength lamda incident at an angle 60deg The minimum thickness to observe the dark...
- Q parabola 25 A conducting wire bent in the form of a y 2x carries a current i 2A as shown in figure This wire is placed in a uniform magnetic...
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