Physics question and answers for August 28, 2024
- Q In case of diffraction pattern of a single slit under polychromatic illumination first minima of wavelength A is found to coincide with the second maxima o wavelength X2 then 3...
- Q An electric dipole of dipole moment p 6 x 10 C m is placed in a uniform external electric 4 N field of intensity 2x 105 as shown in the...
- Q 11 A thin prism P of refracting angle 3 and refractive index 1 5 is combined with another thin prism Q of refractive index 1 6 to produce dispersion without...
- Q The equivalent capacitance between point A and B is OCIA 2 52 A B C 14 3 C 4 20
- Q 26 A flat air capacitor C consists of two large plates that are close to each other Initially one of the plates was not charged while the other had charge...
- Q 2 In the given figure O is the point object and I represents its real image from a concave mirror of focal length f then symbols have their usual meaning...
- Q A uniform electric field of strength E exists in a region An electron charge e mass m enters a point A with velocity Vj It moves through the electric field...
- Q An inventor claims that when temperature of source and sink are 127 C and 27 C respectively then efficiency of engine is 26 then 3127 27nd and af sig 26...
- Q 10 A converging lens of glass has its optica power P in the air If it is medium whose refractive index immersed in is less tha EEN A that of...
- Q Figure I igure II P P 18 Consider a cube as shown in the figure I with uniformly distributed charge in its entire volume Intensity of electrical field and potential...
- Q pher 20 Consider a thin conducting shell of radius r carrying total charge q Two point charges q and 2q are placed on points A and B which are at...
- Q The truck left city A for city B at a speed of 40 km h and 45 minutes later the car left A for the same direction at a speed...
- Q 139 The refracting angle of a prism is A and refractive index of the material of the prism is cot A 2 The angle of minimum deviation is 2015 b...
- Q 27 During a short interval of time the velocity v in meters per second of an automobile is given by v at bt where the time t is in seconds...
- Q 14 A sample gas expands from volume V to V Amount of work done by the gas is greatest when expans A Equal in all cases B Isobaric c Isothermal...
- Q Q3 A car has a fresh battery of emf 12V and internal resistance 0 050 If the starter motor draws a current of 90A the terminal voltage when the starter...
- Q In the given circuit with steady current the potential drop across the capacitor must be R www 2 V 2 TT T H 2V C HH 2R www 3 V...
- Q A straight chain consisting of n identical metal balls is at rest in a region of free space as shown In the chain each ball is connected with adjacent balls...
- Q 141 A beam of light consisting of red green and blue colours is incident on a right angled prism The refractive index of the material of the prism for the...
- Q Two spherical conductors A and A of radii r and r are placed concentrically in air The two are connected by a copper wire as shown in figure Then the...
- Q A capacitor of capacitance C is charged to a potential V and then isolated A capacitor C is then charged from Co discharged and charged again the process is repeated...
- Q Is it possible for the motion of an object along a straight line so that its velocity increases while its acceleration decreases A No because if acceleration is decreasing the...
- Q An uncharged capacitor of capacitance 100 F is connected to a battery of emf 20V at t 0 through a resistance 1092 then i the maximum rate at which energy...
- Q In the adjoining diagram two geometrically identical capacitors A and B are connected to a battery Air is filled between the plates of C and a dielectric is filled between...
- Q The figure shows an experimental plot discharging of a capacitor in an RC circuit The time constant T of this circuit lies between AIEEE 2012 Potential difference V in volts...
- Q 17 A cube made of an insulating material has uniform charge distribution throughout its volume Assuming electric potential due to this charged cube at infinitely distant places to be zero...
- Q The flux entering and leaving a closed surface are 5 x 105 and 4 x 105 SI unit respectively then the net charge inside the surface will be 8 85...
- Q The plates of a parallel plate condenser are being moved away with a constant speed v If the plate separation at any instant of time is d then the rate...
- Q 27 Two particles each of mass 100 g and charge 10 C are released on a horizontal plane at a distance 1 0 m from each other Coefficient of friction...
- Q 23 Electrostatic potential V at a point on circumference of a circular layer of uniform charge and radius r is given by equation V 4or here o is surface charge...
- Q If Gravitational field due to uniform thin hemispherical shell at point P is I then the magnitude of gravitational field at Q is Mass of hemisphere is M radius R...
- Q A resistor R and 2uF capacitor in series is connected through a switch to 200 V direct supply Across the capacitor is a neon bulb that lights up at 120...
- Q Gravitational field at the centre of a semicircle formed by a thin wire AB of mass m and length as shown in the figure is Gm 2 along x axis...
- Q A 3 mega ohm resistor and an uncharged 1 uF capacitor are connected in a single loop circuit with a constant source of 4 volt At one second after the...
- Q An uncharged capacitor of capacitance 4 F a battery of emf 12 volt and a resistor of 2 5 MQ are connected in ser The time after which Vc 3V...
- Q Negative Marks 1 If wrong option is selected A planet moves in an elliptical path with the sun is at one of its foci Select the incorrect statement In QRP...
- Q An electric dipole of dipole moment p 6 x 10 4 C m is placed in a uniform external electric field of intensity 2x 105 105 N figure The angle...
- Q In the given figure the capacitors C C C C have a capacitance 4uF each If the capacitor C has a capacitance 10 F then effective capacitance between A and...
- Q Negative Marks 1 If wrong option is selected A projectile is projected from ground with initial speed vo at an angle with horizontal If air resistance retardation is ao bv...
- Q Two capacitors C and C are identical except that C has air between the plates and C has a dielectric of dielectric constant F Let q and q are the...
- Q Zero Marks 0 In all other cases A satellite is orbiting around the earth in an orbit in equatorial plane of radius 2Re where Re is the radius of earth...
- Q A sphere of radius R surrounds a point charge Q Net outward flux through of semi vertical angle and of slant length R with vertex at centre is Q 250...
- Q d A parallel plate capacitor of capacitance C is as shown A thin metal plate A is placed between the plates of the given capacitor in such a way that...
- Q A parallel plate capacitor C with plates of unit area and separation d is filled with a liquid of dielectric constant K 2 The level of liquid is initially Suppose...
- Q A network is arranged as in Mance s experiment This is used to find the internal resistance of the battery R The resistance of galvanometer and of each of the...
- Q A positive charged particle of charge q and mass m is suspended from a point O by a string of length In the space a uniform horizontal electric field E...
- Q 3 4 x 100 joule A fully charged capacitor has a capacitance C It is discharged through a small coil of resistance wire embedded in a thermally insulated block of...
- Q T 10 J 2 2 106 J 3 3 106 J 4 4 A charged capacitor is connected with a resistor After how many time constants does the energy of...
- Q 2 Ad 2 d 20 E d The voltage drop across a capacitor connected with a resistance and a battery of 60 V in series after a long time is...
- Q A conducting wire having cross section area 1 0 mm and length 1 0 km The wire resistivity is 10 2 m at 20 C and its resistance is 2...
- Q A capacitor is charged by a battery The battery is removed and another identical uncharged capacitor is connected in parallel The total electrostatic energy of resulting system NEET 2017 1...
- Q A parallel plate capacitor of area A plate separation d and capacitance C is filled with four dielectric materials having dielectric constant k k k and k as shown in...
- Q Two small spheres of masses m and my with charges Q and Q are suspended with insulating threads of lengths L and L such that centres of spheres are in...
- Q 1 2 F 2 4 F 3 6 F A 40 F capacitor in a defibrillator is charged to 3000 V The energy stored in the capacitor is sent through...
- Q Zero Marks 0 In all other cases Consider a uniform charge distribution with charge density of 2C m throughout in space If a Gaussian sphere has a variable radius which...
- Q A parallel plate capacitor is made by stacking n equally spaced plates connected alternatively If the capacitance between any two adjacent plates is C then the resultant capacitance is AIEEE...
- Q 1 1 2 2 A parallel plate condenser with a dielectric of dielectric constant K between the plates has a capacity C and is charged to a potential V volts...
- Q Lero Marks 0 In all other cases A lift is going up with an acceleration 2 ms 2 A stone is thrown upward from its floor making angle 15 with...
- Q 4 1 18 3 10 C m 2 8 1 10 C m Find the charge on 2 F 1 18 C 2 25 C 10 V 1 F 3...
- Q 1 45 pF 2 40 5 pF Let C be the capacitance of a capacitor discharging through a resistor R Suppose t is the time taken for the energy stored...
- Q Given a square frame of diagonal length 2r made of insulating wires There is a short dipole having dipole moment P fixed in the plane of the figure lying at...
- Q e Each question has FOUR options ONE OR MORE THAN ONE of these four option s is are correct answer s For each question choose the option s corresponding to...
- Q Stationary wave is represented by y A sin 100t cos 0 01x where y and A are in mm t in sec and x in m The velocity of the...
- Q If a magnetic field H 3a 4a A m exists at a point in free space the magnetic flux density at that point is bold representations are vectors a 3a...
- Q A truck travelling with a uniform velocity begins to accelerate at 3 m s2 for 6 seconds and attains a velocity of 60 m s How much distance was covered...
- Q What would be the voltage across C 1 C C V 2 C V C C C Cy V 3 C V C C C AIIMS 20 C V 4...
- Q The energy required to charge a parallel plate condenser of plate separation d and plate area of cross section A su that the uniform electric field between the plates is...
- Q V tal Level A V A Az R2 P P PV P P Pgh P Po fgh P P pg h h P P pgh Activate Windows Go to Settings...
- Q 44 Velocity time graph is given for a object moving along a straight line then distance covered by the particle in to sec will be slope of graph is a...
- Q H 4 P is best Q worst Two thermometers are used to record the temperature of a room If the bulb of one is wrapped in wet hanky 1 The...
- Q One quality of a thermometer is that its heat capacity should be small If P is mercury thermometer Qis resistance thermomerter and R thermocouple type then 1 P is best...
- Q In a photodiode the reverse current increases when exposed to light of wavelength of 750 nm or less The band gap of semiconductor used is O 1 2 eV O...
- Q A particle moves along X axis Its equation of motion is x 2t t 2 where t is in second Then mark the correct statement s the particle moves away...
- Q 0 12 N 2 0 21 N Length of a string tied to two rigid supports is 40 cm Maximum length wavelength in cm of a stationary wave produced on...
- Q Two capacitors C and C are charged to same potential V but with opposite polarity as shown in the figure The switch S and S are then closed HF C...
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