Physics question and answers for August 18, 2024
- Q Two forces of unequal magnitude simultaneously act on a particle making an angle 0 120 with each other If one of them is reversed the acceleration of the particle is...
- Q In a wire of cross section radius r free electrons travel with drift velocity v when a currentflows through the wire What is the current in another wire of half...
- Q 2 100 A conical container of radius R 1m and height H 5m is filled completely with liquid There is a hole at the bottom of container of area 10...
- Q The frequency of first overtone of closed organ pipe of length is f A hole is made at a 1 distance of from closed end Now 6 frequency of first...
- Q The time of reverberation of a room A is one second The time in seconds of reverberation of a room having all the dimensions double of those of room A...
- Q 1 The gap between the plates of a parallel plate capacitor is filled wit isotropic dielectric whose permittivity varies linearly from t in the direction perpendicular to the plates The...
- Q A certain quantity of O y 7 5 is compressed isothermally until its pressure is doubled P the gas is then allowed to expand adiabatically until its origional volume is...
- Q Ans a 0 032 Nm so that it is free to rotate in the horizontal plane Find the position of equilibrium of the system with respect to each other One...
- Q In a forced vibration of a particle of mass m restoring force per unit displacement s and the damping force per unit velocity Rm The amplitude resonant frequency of oscillation...
- Q 1 Differentiate the following w r t x 3 i 5x ii tan x sec x iii 6logx x 7
- Q In the balanced condition the values of the resistances of the four arms of a Wheatstone bridge are shown in the figure below The resistance R3 has temperature coefficient 0...
- Q A particle is projected up with an initial velocity of 80 ft sec The ball will be at a height of 96 ft from the ground after Choose only 1...
- Q A semiconductor X is made by doping a germanium crystal with arsenic Z 33 A secon semiconductor Y is made by doping germanium with indium Z 49 The two are...
- Q 0 65 AB is a platform of length 10 m kept on frictionless horizontal surface A man of same mass is standing on end A Friction coefficient between shoe of...
- Q 9 A capillary tube of radius r is immersed vertically in a liquid such that liquid rises in it to height h less than the length of the tube Mass...
- Q A 10 m long steel wire has mass of 5 g This wire is under a tension of 80 N The speed of transverse wave travelling on it is 200...
- Q 44 Calculate the radius of the image of the moon formed by the objective of an astronomical telescope having focal length 10 m Given the diameter of the moon 3...
- Q 2 Calculate the current produced in a small germanium plate of area 1 cm and of thickness 0 3 mm when a potential difference of 2V is applied across the...
- Q A person is riding a bicycle in vertical portion accelerating forward without slipping on a straight horizontal road What is are the direction s of the total force exerted by...
- Q An aeroplane flying horizontally with a velocity c 216 km h drops a food packet while flying at height of 980 m The total horizontal distance travelled by the packet...
- Q A refrigerator has to transfer an average of 268 Joule of heat per second from temperature 5 C t 35 C What is the average power consumed assuming ideal reversible...
- Q The velocity versus time graph of a particle executing SHM is shown below The maximum acceleration of the particle is v m s 8 0 86 0 2 7 foo...
- Q 5 The refractive index of the material of a prism is 2 and the angle of the prism is 30 One of the two refracting surfaces of the prism is...
- Q An analyser blocks the light coming from a polariser as Select one a None b The pass axis of the analyser and the polariser is oriented 90 to each other...
- Q ofv A ball of mass m moving horizontally which velocity u hits a wedge of mass M The wedge is situated on a smooth horizontal source If after striking with...
- Q 2 149 The minimum force F needed to push the two 50 kg cylinders up the incline is 200x Newton The force acts parallel to the plane and the coefficients...
- Q A mass of 2 kg is suspended by a light spring of stiffness constant 20 Nm11 The energy associated with the vertical oscillation of the system is observed to decay...
- Q 0 Consider a rectangular slab of length L and area of cross section A A current I is passed through it If the length is doubled the potential drop across...
- Q 30 gm of ice at 14 C is added to 200 gm of water at 25 C Find the equilibrium temperature Take specific heat of ice 0 5 cal g...
- Q 38 A wire fixed at the upper end stretches by length by applying a force F The work done in stretching is AIEEE 2004 a F 21 b Fl FI
- Q Four persons K L M N are initially at the four corners of a square of side 20 m Each person now moves with a uniform speed v 5 m...
- Q A solid ball of mass m is made to fall from a height H on a pan suspended through a spring of spring constant K as shown in figure If...
- Q Integer Type Questions 1 The magnitude of force f in Newton acting on a body varies with time t in millisecond as shown in the figure Find the magnitude of...
- Q A ball of mass 0 2 kg is thrown vertically upwards by applying a force by hand If the hand moves 0 2 m while applying the force and the...
- Q 2 A block of mass 0 2 kg is held against by a wall by applying a horizontal force of 5 N on the block The coefficient of friction between...
- Q 3 In L C oscillation maximum charge on capacitor is Qo The current in the circuit when 50 energy is electrical and 50 magnetic is 1 Qo LC 9 C...
- Q The relation between Einstein s B coefficient implies Select one a LASING is coherent b LASING is inefficient in natural crystals C All d Stimulated emission rate is equal to...
- Q component of earth s field is 0 4 x 10 4 T 28 A magnet makes 12 oscillations per minute in the earth s magnetic field alone and 15 oscillations...
- Q 5 A system consists of two concentric conducting spheres with the inside sphere of radius a carrying a positive charge q What charge 92 has to be deposited on the...
- Q Two smooth spheres made of identical material having masses m and 2m undergoes an oblique impact as shown in figure The initial velocities of the masses are also shown The...
- Q In given figure speed of A D is 8 shown and speed of B with respect to A is m sec Speed in m s of c in vertical direction...
- Q When an open organ pipe resonates in its fundament mode then at the centre of the pipe The gas molecules undergo vibrations of maximum amplitude The gas molecules are in...
- Q An oscillator consists of a block attached to spring k 400 N m At some time t the position measured from the system s equilibrium location velocity and acceleration of...
- Q 16 A particle of mass m is located in a unidimensional potential field where the potential energy of the particle depends on the coordinate x as U x U 1...
- Q A l F capacitor is connected in the circuit shown below The e m f of the cell is 2 volts and internal resistance is 0 5 ohm The resistors...
- Q A ball is dropped from a spacecraft revolving around the earth at a height of 120 km What will happen to the ball a it will fall down to the...
- Q SINGLE OPTION CORRECT TYPE When forces F F2 and F3 are acting on a particle of mass m such that F2 and F3 are mutually perpendicula hen the particle remains...
- Q ind 2 30 5 cm OOP A tube 1 m long is closed at one end A stretched wire is placed near the open end The wire is 0 3m...
- Q A bar magnet with its north N and south S poles is initially moving to the left along the axis of fixed circular conducting loop as shown A current is...
- Q A monoatomic gas undergoes a process given by 2dU 3dW 0 then the process is A isobaric B Adiabatic C polytropic processes with equation PV0 5 constant D polytropic processes...
- Q field intensity is zero 2 m Find the point C B S E 01 Ans 2 3 m 78 Two positive charges of 10 C each are situated 10 x...
- Q What is maximum number of possible interference maximas for YDSE in which slit separation is twice the wavelength of monochromatic light
- Q 005 m a real image is formed 0 20 m from the lens vision is 0 24 m ufication is produced by the lens when used as a magnifier The...
- Q A uniformly tapering circular bar has its diameter ranging from D a to D a along its length L The bar is subjected to an axial force P and young...
- Q wo simple harmonic motions are represented by the equations y 0 1 sin 100nt F 3 and Y 0 1 cos100nt The phase difference of the velocity of particle 1...
- Q Two particles A and B of masses m and 3m are moving along X and Y axes respectively with the same speed v They collide at the origin and coalesce...
- Q A dumbbell consists of two balls A and B each of mass m 1 kg and connected by a spring The whole system is placed on a smooth horizontal surface...
- Q A sphere P of mass m and velocity undergoes an oblique and perfectly elastic collision with an identical sphere Q initially at rest The angle 9 between the velocities of...
- Q Given BH 0 36 x 10 4 T 29 Two small identical magnets are 8 x 10 2 m long and have pole strength 60 Am When they cannot rotate...
- Q Two audio speakers are kept some distance apart and are driven by the same amplifier system A person is sitting at a place 6 0 m from one of the...
- Q 16 Two wave are represented by equation 9 a sin oot 9 a cos cot the first wave 1 leads the second by t 2 lags the second by 3...
- Q A satellite revolve around the earth at a height 900 km above the surface of the earth in a circu orbit Calculate its orbital velocity G 6 67 x 10...
- Q Magnetic field in a cylindrical region is given by B at Find emf across rod AB as shown in figure A O 2R B
- Q Two geometrically identical bar magnets having their identical poles are together and allowed to magnetic moments 4M and 5M are joined such that oscillate in a magnetic field It is...
- Q The radius of the earth is 6370 km and radius of mars is 3440 km What is the acceleration due to gravity on mars if mass of the mars is...
- Q 40 An electric dipole consists of two point charges 4 C and 4 C placed 24 cm apart Find the electric potential at a point lying 4 x 10 2...
- Q res A particle execute S H M with frequency f Find frequency with A particle of mass 10g is placed in potential field given by V 50x2 100 erg g...
- Q m 4 A charged particle moving with some unknow velocity enters into an unknown uniform magneti field The kinetic energy of the particle 1 Increases 2 Decreases m 3 Remains...
- Q A particle of mass m is attached to one end of the light inextensible string and other end of the string is fixed in vertical plane as shown Now 5...
- Q A particle describes SHM in a straight line about O OP If the time period of the motion is T then its kinetic energy at P be half of its...
- Q A block of mass m placed on a smooth horizontal surface is attached to a spring and is held at rest by a force P as shown Suddenly the force...
- Q The electric outward and is given by E Ar A charge contained in a sphere of radius a centred at the origin of the field will be given by AIPMT...
- Q The SI unit of intensity of wave is 2 a W m W m b Jm s c 2 d Jm s U
- Q Projectile motion on inclined plane up motion u Vor u usin 0 a t 0 O D 0 eucos a Ja Time of flight T Hax 2u a gcosa gsina...
- Q Three identical spherical shells each of mass m and radius r are placed as shown in figure Consider an axis XX which is touching to two shells and passing through...
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