Physics question and answers for July 16, 2024
- Q 01 Two coils A and B have coefficient of mutual inductance M 2H The magnetic flux pass ing through coil A change by 4 Weber in 10 seconds due to...
- Q Two coherent sources are 0 3 mm apart They are 1 m away from the screen The second dark fringe is at a distance of 0 3 cm from the...
- Q 38 In Fresnel diffraction if the distance between the disc and the screen is decreased the intensity of central bright spot will a biqu a Increase b Decrease igi c...
- Q 35 A certain body weighs 22 42 g and has a measured volume of 4 7 cc The possible errors in the measurement of mass and volume are 0 01...
- Q A 200 kg satellite is revolving around earth in circular orbit of radius 2R Amount of energy required to transfer it to a circular orbit of radius 4R is M...
- Q laced with time 300 rad ngle of 60 mf is magnetic en the em c field is are the 1 Mon n r l 2 M M M r l...
- Q 11 A rigid circular loop of radius r and mass m lies in the x y plane on a flat table and has a current i flowing in it At...
- Q Find the flux passing through the shaded rectangular plane which passes through the axis due to the long straight current carrying conductor having a current i Given length 1m current...
- Q A charge in motion can exert force on a statinary bar mag net Conversely a bar magnet in motion can lead to a ford e on stationary charges 7 A...
- Q city 4 Thrust wance The period of oscillation of a simple pendulum in in rock an experiment is recorded as 2 63s 2 56s 2 42s 2 71s and 2...
- Q ALLEN 5 A flux of Im Wb passes through a strip having 25 an area A 0 02 m The plane of the strip is at an angle of 60...
- Q X axis Two wires of same length are shaped into a square and a circle If they carry same current ratio of the magnetic moment is MINI 1 2 n...
- Q The magnetic field at the centre of a circular current carrying loop of radius Ris B The magnetic field on its axis at a distance R from the centre is...
- Q An object is placed on the principal axis of a concave mirror of focal length 10 cm at a distance 8 0 cm from the pole The image is formed...
- Q Two coherent light sources P and Q are at a distance 3A from each other as shown in the figure The distance from Pon the x axis at which constructive...
- Q Real and inverted image of an object is formed at a distance d 40 cm from the object The size of the image is half of that of object List...
- Q 2 The number of turns in the primary and 41 secondary coils of a transformer are 5 and 10 respectively The mutual inductance is 25 H If the number of...
- Q The radiation corresponding to 32 transition of hydro gen atom falls on a metal surface to produce photoelectrons These electrons are made to enter a magnetic field of 3x10 T...
- Q SolveLancer Test Which of the following can represent electric field due to a point charge at points X and Y X L Test a I IV b II III c...
- Q 2010 3 A tiny spherical oil drop carrying a net charge q is balanced in still air with a vertical uniform electric field of strength 81m x 105 Vm When...
- Q A smiling face as shown in figure consists of a ring of radius 6 cm with charge 3 C a second thin wire of charge 4 C and in shape...
- Q ALLEN Two masses m 2kg and m 5kg are moving 19 on a frictionless surface with velocities 10m s and 3 m s respectively m is ahead of m An...
- Q Given that the density of states related effective masses of electrons and holes in Si are approximately 1 08 m and 0 56 m respectively and the electron and hole...
- Q 18 A force F 31 41 N is acting on a point mass 1 kg at a point A 2m 2m Find the 2 angular acceleration of the line OA...
- Q 5 In which of the following case Interference of two waves is not observed 1 Point Superposing waves having same frequency but different amplitude Superposing waves having same
- Q A plane mirror is placed at the bottom of a tank containing a liquid of refractive index P is a small object at a height h above the mirror An...
- Q Q10 A beam of light strikes a glass sphere of diameter 15 cm converging towards a point 30 cm behind the pole of the spherical surface Find the position of...
- Q A light rigid rod connected with two particles masses m and 2m rotates in vertical plane agar horizontal and vertical surfaces shown in the figure The angular momentum of particle...
- Q Momentum of a photon in a beam of light of wavelength 6000 and intensity 100 W m will be 1 23 x 10 27 kg ms 1 2 12 10...
- Q A non conducting sphere of radius 10 cm has a charge 3 mC distributed uniformly throughout its volume A bullet having charge 3 mC and mass 10g fired from the...
- Q An object 20 cm in front of a lens forms a sharp image on a film 10 cm behind the lens A glass plate 6 cm thick of refrac tive...
- Q 18 A proton is fired from very far away towards a nucleus with charge Q 120 e where e is the electronic charge It makes a closest approach of 10...
- Q In a metre bridge when the resistance in the left gap is 40 and an unknown resistance in the right gap the balance point is obtained at 40 cm from...
- Q A particle is moving along x axis whose acceleration 4 is given by a 3x4 where x is location of the particle At t 0 the particle is at rest...
- Q a 38 26 A square is made of four rods of same material one of the diagonal of a square is at temperature difference 100 C then the temperature difference...
- Q In the circuit shown in figure below the cells E and E have e m f 4 V and 8 V and internal resistance 0 5 ohm and 1 0...
- Q ALLEN Three identical blocks A B and C each of mass 9 2kg are kept on a smooth horizontal surface Block A is given a horizontal velocity 10m s towards...
- Q In a given N type Si material if donor concentration is one atom per 2 108 silicon atoms Assuming that effective mass of electron is equal to its true mass...
- Q uniform plastic cylinder of mass 2kg and length 0 5m has 20 turns of a light wire wrapped around its middle such that the v orms a rectangular coil with...
- Q This question concerns a symmetrical lens shown along with its two focal points It is made of glass with n 1 2 and has focal length f Four different region...
- Q a 45 km h A table clock has its minute hand 5 0 cm long The average velocity of c 3 14 x 104 cm s hand between 6 00...
- Q Q 17 If n 1 then the dependence of frequency of a photon emitted as a result of transition of electron from nth orbit to n 1 th orbit on...
- Q Two blocks A and B of equal mass are connected by a light inextensible taut string passing over two light smooth pulleys fixed to the blocks The parts of the...
- Q Power P of a lens is given by reciprocal of focal length f of the lens i e P When f is in metre P is in dioptre When a...
- Q 30 A uniform disc of radius R having charge Q distributed uniformly all over its surface is placed on a smooth horizontal surface A magnetic field B Kxt2 where K...
- Q Suppose that reflected white light is used to observe a thin transparent coating on glass as the coating material is gradually deposited by evaporation in a vacuum Describe color changes...
- Q Solvelancer TestFgure shows sound source of frequency 140Hz and a car blowing horn continuously with same frequency as of sound source Find number of beats heard by boy on bike...
- Q Energy levels A B C of a certain atom correspond to in creasing values of energy i e E E E If 2 2 and 2 are the wavelengths of...
- Q 111 Image of sun formed due to reflection at air water interface is found to be very highly polarised Refractive index of water being 4 3 find the angle of...
- Q 9 The initial velocity of a particle is u at t 0 and the acceleration a is given by af 2 Which of the following relations is valid 1 v...
- Q Match the entries of column I with the entries of column II Considering all the cases with refrence to real objects and virtual objects also List 1 1 Plane mirror...
- Q SolveLancer Test A student has a coil with resistance 20 and inductance 80 mH which is connected with a 10 V battery He obtains a steady state value of the...
- Q An astronomer observes galaxy A moving away with B 0 55 and galaxy B moving away in exactly the opposite direction with B 0 65 What is the value of...
- Q 18 A square coil ABCD lying in x y origin A long straight wire passing through origin carries a current i 2t in the negative z direction the induced current...
- Q For the system shown in the figure the pul leys are light and frictionless The tension in the string will be T m 0 2 A mg sin e 3...
- Q Two bodies each of mass mare initially at rest at infinite distance apart Now they move towards each other under gravitational force The relative velocity of approach at a separation...
- Q A double convex lens made of a material of refractive index 1 5 and having a focal length of 10 cm is immersed in a liquid of refractive index 3...
- Q Find out the surface charge density at the intersection of point x 3 m plar and x axis in the region of uniform line charge of 8 nC m lying...
- Q bulb of 3 3 cm 29 A thermometer has a spheric volume 1 cm having 1 cm of mercury A long cylindrical capillary tube is connected to spherical bulb Volumetric...
- Q The light reflected by a plane mirror may form a real image Select an answer A B C D if the rays incident on the mirror are converging if the...
- Q 4 16 A coil carrying a current I 10mA is placed in a uniform magnetic field so that its axis coincides with the field direction The single layer winding of...
- Q A charge q appears on H atom due to movement of electrons towards oxygen Taking the separation between H atom and oxygen atom as r calculate the dipole moment of...
- Q SolveLancer Test In the given figure are the bulbs are of same rating Which of the following statement is are correct for the given figure BA 13 If B fuses...
- Q A farsighted person s least distance of distinct vision is 0 5 m The power of the lens that should be prescribed to enable him to a read a book...
- Q n a young s double slit experiment slits are illuminated by a monochromatic source of wavelength 6000 A and fringes ar obtained If screen is moved by a distance of...
- Q Consider a two particle system with particles having 6 masses m and my If the first particle is pushed towards the centre of mass through a distance d by what...
- Q Total internal reflection can take place only if Select an answer A B C D light goes from optically rarer medium to optically denser medium 21 light goes from optically...
- Q x axis between reflecting walls at x 0 and x a Between these two limits it moves freely at constant velocity v If the walls are perfectly reflecting then its...
- Q 8 A closed organ pipe and an open pipe of the same length produce 4 beats when they are set into vibrations simultaneously If the length of each of them...
- Q a C in south west direction The displacement of the person from the origin will be 10 m along north 10 m along west b d 10 m long south...
- Q The impulse imported by an electromagnetic pulse of energy 1 5 10 2 joule when it falls normally on a perfectly reflecting surface is Onig one correct answer A B...
- Q A 5 0 dioptre lens forms virtual image which is four times the object placed perpendicularly on the principal axis of the lens The distance of the object from the...
- Q A block of mass m is pulled by a force of constant power P placed on a rough horizontal plane The friction coefficient between the block and the surface is...
- Q A point source of light at the surface of a sphere causes a parallel beam of light to emerge from the opposite surface of the sphere The refractive index of...
- Q Block A B C connected with light string with larger block M as shown in figure Pullies are light and frictionless There is no friction anywhere Which is the correct...
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