Physics question and answers for July 13, 2024
- Q particle moving along x axis has acceleration f at time t given by f fo 1 where fo and T are constants The particle at t 0 has zero velocity...
- Q A boy is standing on a weighing machine inside a lift When the lift goes upwards g with acceleration the machine shows the reading 50 kg wt When the lift...
- Q is 22cm and 48cm away from the mean position Find its time period and amplitude Ans 2 331sec 56 44cm Calculate the fraction of kinetic energy and potential energy to...
- Q A converging lens of power 2 D is placed in contact with another lens of power 1 D The combination will behave as A converging lens of focal length 100...
- Q 40 Given below are two statements labelled as Assertion A and Reason R Assertion A A uniform electric field and a uniform magnetic field are acting along the same direction...
- Q Light of wavelength 500 nm is incident on two slits separated by 1 mm in YDSE What is width of each bright band if screen is 1 m away from...
- Q HIS and secondary of a 20 mH and 90 mH al induction between and resistance for ter NEET Part II A train is moving on a straight horizontal track Induced...
- Q 21 22 Find out mechanical advantage in given figure 1 4 3 2 1 W 2 3 4 1 A boy sitting on the topmost berth in the 21 fagfiffy...
- Q 16 A circular ring of radius square having side a a r The mutual inductance of the system is 1 Mor2 a 2 2 2 Horz 3 2 2 or...
- Q f inductance of two n a core as shown in inductance of each n is moving in ed v If B I and and R is the ower delivered Last...
- Q An electric bulb is marked 100W 220V If the supply voltage drops to 110V what is the total energy produced by the bulb in 20 minutes 1 Point O 30kJ...
- Q A parallel plate capacitor is charged to 60 C 7 Due to a radioactive source the plate loses charge at the rate of 1 8 x 10 C s the...
- Q A mass M is divided in two parts m and M m 35 Now two parts are connected by an ideal string passing over a pulley as shown in diagram...
- Q 10 In a resonance tube experiment resonance occurs with a tuning fork of 1 point frequency 420 Hz when the resonating length of the air column is 20 cm What...
- Q Two blocks of mass M 6 kg and m H 3 kg are placed as shown in the figure Coefficient of friction between M and m is 0 5 Coefficient...
- Q 4 2 A long horizontal wire AB which is free to move in a vertical plane and carries a steady current of 20A is in equilibrium at a height of...
- Q ng 1 h g A stone is dropped from a certain height and another stone is dropped from the same height after 2s Wha will be their separation after 10...
- Q 12 In resonance tube experiment we use Oa transverse progressive waves Ob longitudinal progressive waves O c longitudinal stationary waves Od transverse stationary waves
- Q A fighter plane is yung horizontally at an altitude of 1 5 km with speed 720 km h At what angle of sight w r t horizontal when the target...
- Q 11 A stone weighing 3 kg falls from the top of a tower 100 m high and buries itself 2 m deep in the sand The time of penetration is...
- Q A body performs linear S H M with amplitude a When it is at a distance from 3 extreme position the magnitude of velocity is times the magnitude of acceleration...
- Q Example 2 A car is moving along a straight line OP It moves from 0 to P in 18 seconds and returns from P to Q in 6 seconds where...
- Q E 2n Hb 1 4R L 3 3R x a a In 3 2n For the given R L circuit the time constant is R www 4 www 2R reee...
- Q he slotting processes in a metallic sheet causes The increase of the resistance in the path for circulation of current 2 Decrease in the strength of eddy current 3 Feeble...
- Q 28 A ball is dropped from height h and after striking with the ground it rises up to height h The coefficient of restitution between the ball and the ground...
- Q 3 ALLEN Three blocks A B and C of masses 8 kg 4 kg 23 and 2 kg respectively are in contact on a frictionless surface as shown If a...
- Q The magnetic field of a plane electromagnetic wave is B 3 108 sin 2007 y ct i T where c 3 108 ms 1 is the speed of light The...
- Q In an astronomical telescope focal length of objective lens is 75 cm and that of eye piece is 5 cm What is magnifying power if final image is seen at...
- Q 40 At t 0 observer and source are at same place Now the source is projected with velocity 60 2 m s at 45 Natural frequency of source is 1000...
- Q Figures below show regular hexagons with 19 charges at the vertices In which of the following cases the net electric force at the centre is not zero 1 qd 3...
- Q 53 From a circular disc of radius R and mass 9M a small disc of R radius is removed as shown 3 in figure The moment of inertia of the...
- Q 9 In a resonance tube experiment tube has radius of 3 cm then its end correction is a 0 9 cm Ob 0 5 cm O c 0 9 m...
- Q A ray of light passing through equilateral triangular glass prism from air undergoes minimum deviation when angle of incidence is of angle of prism What 3 4 is refractive index...
- Q Six point mass particles are is placed on horizontal surface such that arrangement form a regular hexagon as shown Calculate coordinate of center of mass of arrangement A 1 3...
- Q 27 3 1 27 x 10 N 4 0 127 N A body A of mass m exerts a force on another 27 body B of mass m If the...
- Q P current carrying cable is penetrating a loop as shown in the figure If magnitude of current is decreasing with time then the current induced in the loop is C...
- Q 22 The equation for the vibration of a string fixed at both ends vibrating in its third harmonic is given by y 2 cm sin 0 6 cm cos 500...
- Q 4 capacitors each of 2 F are connected as shown What will be the equivalent capacitance across the points A and B 1 Point A C1 C3 B C2 C4
- Q A convex surface of radius of curvature 40 cm separates two medium of refractive indices and 4 3 1 50 An object is kept in the first medium at distance...
- Q A 61 000 kg Rocky Mountain Double big rig is traveling at 0 5 m s About what velocity must a 730 kg compact electric vehicle have to achieve the...
- Q A potential difference of 400 volt is applied across the plates of a parallel plate capacitor plates being separated by 2 mm An electron projected vertically upward parallel to the...
- Q 1 Three uncharged capacitors of capacitance C C 11 and C are connected as shown in figure to one another and to points A B and D at potentials VA...
- Q A coil has 500 turns and the flux through the coll is 32 4t 9 milliweber The magnitude of induced emf between the ends of coil at t 5 s...
- Q A square wire of side 3 cm is placed perpendicular to principal axis at a distance 25 cm from a concave mirror of focal length 10 cm What is area...
- Q 15 What is a rectifier used for a Convert ac voltage to dc voltage Ob Convert dc voltage to ac voltage Oc Measure resistance O d Measure current
- Q 2 Minimum frequency of audible sound is 20 Hz and maximum frequency is 20 000 Hz If we compare the sound levels of these two frequencies of same amplitudes their...
- Q The angular diameter of a planet measured from earth is 90 If the diameter of the planet is x 10 m then its distance from the earth is B 7...
- Q 3 A man measure his weight by standing on a weigh ing machine If he leaps on the left side of the ma 2xco chine then its reading 12 mgr...
- Q An isosceles right angled glass prism is immersed in water The refractive indices of 4 3 3 glass and water relative to air are and respectively If a ray of...
- Q In an experiment of simple pendulum the errors in the measurement of length of the pendulum L and time period 7 are 3 and 2 respectively The maximum percentage error...
- Q When light is refracted into a medium from vacuum then Its wavelength and frequency both change Its wavelength increases but frequency remains same Its wavelength decreases but frequency remains same...
- Q 13 A parallel plate capacitor is charged by connecting it to a battery Which of the following will remain constant if the distance between the plates of the capacitor is...
- Q A person walks up a stalled escalator in 90 sec 19 When standing on the same escalator now moving he is carried up in 60 seconds How much time would...
- Q 3 dielectric strength 4 dielectric constant Two large metal plates are placed parallel to 3 each other The inner surface of plates are charged by and coulomb m The electric...
- Q 3 ALLEN An iron ball of mass 100 g moving with a 28 velocity of 10 m s collides with a wall at an angle 30 with wall rebounds at...
- Q process A circular loop of radius 4 cm and carrying current 0 2 A is placed in a uniform magnetic field of induction 0 4 T and perpendicular to the...
- Q 4 1 An a particle is accelerated by a potential difference of 104 V Find the change in its direction of motion if it enters normally in a region of...
- Q Consider the arrangement shown in figure The 10 fe fan fifay U total energy stored is U when key is closed Now the key S is made off opened and...
- Q 1 Two resistances are connected in two gaps of Meter Bridge The balance 1 point is 20 cm from the zero end A resistance of 15 ohm is connected in...
- Q a 9 kV 51 Four capacitors are connected to a 80 V supply as shown in figure Then the potential differe between the points X and Y is C 2...
- Q released when a radioactive element having mass number A undergoes alpha decay then the velocity of alpha particle is Only one correct answer A B 2Q A 4 2 A...
- Q ALLEN A thick wire of resistance 2502 is drawn into a 26 thin wire such that its length becomes four times The new resistance of the wire will be 1...
- Q 38 Given below are two statements labelled as Assertion A and Reason R Assertion A The current density is a vector quantity Reason R Current density has magnitude current per...
- Q A ball leaves a horizontal table with velocity Vo 5 m s The ball bounces elastically from a vertical wall at a horizontal distance D 8 m from the table...
- Q ion e 40 A cylindrical a constant current The plot of the magnitude of the magnetic field B with the distance d from the centre of the conductor is correctly...
- Q Q8 A geostationary satellite orbits around the earth in a circular orbit of radius 36000 km Then the time period of a spy satellite orbiting a few hundred kilo meters...
- Q 23 A string is under tension so that its length is increased by times its original length The ratio of 1 n fundamental frequency of longitudinal vibrations and transverse vibrations...
- Q 27 0 If work done in increasing the size of rectangular soap film with dimensions 8 cm x 3 75 cm to 10 cm x 6 cm is 2 x...
- Q Soft water is define as CO1 O The water which contains oxygen The water which contains anions of Br 1 S 2 O O O The water which does not...
- Q In YDSE yellow light of wavelength 6000 produced fringes of width 0 8 mm If the source is replaced by another monochromatic source of wavelength 7500 and separation between slits...
- Q 1 point 7 Which one of the following is a disadvantage of a potentiometer over a voltmeter Oa it can measure the e m f of a cell Ob it...
- Q C C C C3 C3C1 In the circuit shown in the figure each capacitor 12 has a capacity of 3uF The equivalent capacity between A and B is 1 3...
- Q Please explain clearly 5 A closed vessel in the shape of a truncated cone having semivertex angle 53 have top and bottom radii r and 3r The vessel is full...
- Q 6 Indicate the wrong statement from the following For accurate measurements a potentiometer wire Oa must have a uniform cross section Ob must have a high temperature coefficient of resistance...
- Q 1 25 F 3 40 F Separation between the plates of a parallel plate 6 capacitor is d and the area of each plate is A When a slab of...
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