Physics question and answers for July 23, 2024
- Q owing questions A flywheel is spinning about its axis of symmetry has weight W and it rotates with a constant angul speed w Moment of inertia of the flywheel about...
- Q 29 A ray of light falls on a transparent sphere with centre at C as shown in figure The ray emerges from the sphere parallel to line AB The refractive...
- Q A particle moves in space such that its velocity and at certain point is given by acceleration V v 41 m s and a 61 2 6k m s The...
- Q 7 A rod of length 1000 mm and coefficient of linear expansion a 104 C is placed symmetrically between two fixed supports separated by 1001 mm The Young s modulus...
- Q 16 3 A child in danger of drowing in a river is being carried downstream by a current that flows uniformly at a speed of m sec The child is...
- Q In shown system strings and pulley are frictionless and massless Block A is moving downward with velocity of 7m s which is increasing at a rate of 2 m s...
- Q 30 Light is incident normally on face AB of a prism as shown in figure A liquid of refractive index u is placed on face AC of the prism the...
- Q x An inclined plane is bent in such a way that the vertical cross section is given by y where y is in vertical and x in horizontal direction If...
- Q An object is placed at a distance of f 2 from a conve lens of focal length f The image will be 1 At one of the foci virtual and...
- Q A rigid rectangular mesh measuring 0 300 m by 0 400 m carries a current of 3 70 A as shown A uniform external magnetic field of magnitude 1 20...
- Q 8 In the network shown points A B and C have potential of 70 V zero and 10 V respectively Bov 70 V A www 100 2002 1 3 2...
- Q Two blocks A and Beach of mass kg are connected by a massless inextensible string and kept on horizontal surface Coefficient of friction between block and surface is shown in...
- Q 5 A charged particle q is shot from a large distance with speed v towards a fixed charged particle Q It approaches Q upto a closest distance r and then...
- Q Three short dipoles each of dipole moment of magnitude p are placed on a circle of radius Ras shown The magnitude of electric field intensity at centre will be 1...
- Q lissipated in the 3 k and 20 k resistors and c the power supplied by the current source 3 KQ 21 1kQ 10 mA Figure 2 45 For Practice Prob...
- Q QUESTION NO 7 INSTRUCTION Question given below has four answer options out of which ONLY ONE is correct Choose the area For CORRECT answer you will be awarded 4 Marks...
- Q D 13 The stopping potential V in volt as a function of frequency The work function of sodium from the data plotted in the figure will be Given Planck s...
- Q In a common emitter amplifier output resistance is 5000 2 and input resistance is 2000 92 If peak value of signal voltage is 10 mV and 50 then the peak...
- Q Q7 In a fixed volume container ideal monoatomic gas is kept at room temperature 300 K To what temperature should the container be heated so that the final rms velocity...
- Q onsider the charge configuration and a Gaussian surface as shown in figure If 2 and 3 are net electric flux due to charges 9 92 and q espectively then Here...
- Q 1 A rectangular loop has a sliding connector PQ of length 1 and resistance R 22 and it is moving with a speed v as shown The set up is...
- Q 14 A concave mirror is placed on a horizontal table with its axis directed vertically upwards Let O be the pole of the mirror and C its centre of curvature...
- Q The following diagram indicates the energy levels of a certain atom where the system moves from 4E level to E a photon of wavelength is emitted The wavelength of photon...
- Q A silver ball of radius 4 8cm is suspended by a thread in the vacuum chamber UV light of wavelength 200 nm is incident on the ball for some time...
- Q 12 In the experiment of the meter bridge if length corresponding to null deflection is x what would be its value if the radius of meter bridge wire is doubled...
- Q 10 The reading of voltmeter in the figure shown is 2002 www 100 V 1 50 V 3 40 V 100 2 300 600 2 60 V 4 80 V
- Q Two balls of same mass and carrying equal charge from a fixed support of length 1 At electrostatic equilibrium assuming that angles made by each thread is small the separation...
- Q An oceanographer observes that the density of ocean water increases by 0 001 grams per cubic centimeter every 300 meters below sea level If a cubic meter of ocean water...
- Q SolveLancer Test The photon concept was confirmed by Compton Experiment Consider statements about this experiment 1 This experiment showed that photon model applied only to UV light ii The collision...
- Q The efficiency of the cycle shown below in the figure consisting of one isobar one adiabat and one isotherm is 50 The ratio x between the highest and lowest temperatures...
- Q 40 A mirror produces on a screen an image of the sun 2 cm in diameter If the sun s disc subtends an angle 0 1 radian on the surface...
- Q While standing in an elevator you see a screw fall from the ceilling of elevator The celling of elevator is 5 m above the floor of the elevator The elevator...
- Q Find the current through 102 resistor shown in figure 1 Zero 3 2 A 392 www 4 5 V HH 102 3 V www 692 www 2 1 A 4...
- Q 3 4 4 9 10 Weight of a body decreases by 1 5 when it is raised to a height h above the surface of earth Whe same body is...
- Q If mass of earth decreases by 25 and its radius increases by 50 then acceleration due to gravity at surface decreases by nearly 1 89 3 33 2 67 4...
- Q 8 Two point objects of mass 2x and 3x are separated by a distance r Keeping the distance fixed how mu mass should be transferred from 3x to 2x so...
- Q A bob of mass m 10 kg hangs by a light inextensible string which is connected with a rigid support after passing over a smooth pulley P If the bob...
- Q 1 A spherical raindrop of initial mass Mo and initial radius R falls freely from rest Let p be the constant density and r the radius at time t Assume...
- Q SolveLancer Test A coil consisting of 400 turns is rotated with an angular velocity of 600 rpm in a magnetic field of magnitude 0 4 mT about a diameter normal...
- Q 3 2 The youngs modulus of a rubber string 8 cm long and density 1 5 kg m is 5 x 108 Nm2 is suspended on the ceiling in a...
- Q Test 6 Code A 4 A galvanometer has a resistance 100 2 It give full scale deflection on passing 10 mA curren through it To convert it into a voltmeter...
- Q In the above figure a block of mass m is given a initial velocity v A force acts on m in negative direction Magnitude of force F um Which of...
- Q n 1 n 3 n 1 5 A total charge of 20 C is divided into two parts placed at some distance apart If the charges experience maximum coulombian repulsion...
- Q Figure shows an imaginary cube of edge L 2 A uniformly charged rod of length L moves towards left at a small but constant speed u At t 0 the...
- Q Sir ere ame from 8 and 1 When two thin lenses are in contact their combined power is 9 D When they are 27 separated by a small distance of...
- Q ime plot for a certain body is shown in the following graph In an interval from 5 s to 10 s the body is displaced by 25 m The work...
- Q If an object is moving at constant acceleration in a straight line its instantaneous velocity half way through any time interval is 2 1 greater than its average velocity less...
- Q Two point dipoles of dipole moment p and p2 are at a distance x form each other and p P2 The force between the dipoles is 1 4P P2 A...
- Q If an emitter current is changed by 4 mA the collector current changes by 3 5 mA The value of will be 1 0 5 3 0 875 7 Correct...
- Q 57 Water rises in a capillary upto a height of 4 cm If it is titled to 30 from the vertical then the length of water column in it will...
- Q 3 4 Electric charges are distributed in a small volume The flux of the electric field throught a spherical surface of radius 10 cm surronding the total charges is 25V...
- Q 3 In the potentiometer circuit shown in figure the internal resistance of the 12 V battery is 1 2 and length of the wire AB is 100 cm When CB...
- Q Two blocks A and B each having a mass of 480 gm connected by a light string passing over a smooth light pulley The block A is attached to a...
- Q 5 The temperature of sink of Carnot engine is 27 C Efficiency of engine is 25 Then temperature of source is uchun f25 1 227 C 2 327 C 3...
- Q 0 An observer is moving towards a stationary sound source If speed of observer is increased by 20 then percentage change in the wavelength of sound as observed by observer...
- Q A charge particle is revolving around a central charge with frequency 2 x 1015 Hz Find current due to motion of charge particle radius of orbit is 0 6 A...
- Q SolveLancer Test A coil of 350 turns having cross section area 1 4 m The coil is placed in a region where magnetic field changes from 0 50 Wb m...
- Q SolveLancer Test The world s biggest aircraft Antonov AN 225 Mriya has an approximate wingspread of 100 m It travels from Ukraine in the east direction with a speed of...
- Q A block is released from rest on an fixed incline plane from a height 6m above the ground as shown in figure where coefficient of friction between block and incline...
- Q A transparent solid cylindrical rod has a refractive index u and is surrounded by air A light ray is incident at mid point of one end of rod as shown...
- Q 53 In the circuit shown figure if the current distribution remains unchanged on connecting E then the valu of E will be f fack 1 12 Volt 2 6 Volt...
- Q Two small equal point charges of magnitude q are suspended from a common point on the ceiling by insulating massless strings of equal lengths They come to equilibrium with each...
- Q 500 A particle is projected with speed u at an angle 8 with the vertical Change in speed of the particle when it reaches the highest point of trajectory from...
- Q 1 A boat having length of 2 5m and breadth 2m is floating on a lake The boat sinks by 1cm when a man gets on it The mass of...
- Q In the arrangement shown in the figure mA 1 kg and me 2 kg while all the pulleys and the strings are massless and frictionless At t 0 a force...
- Q An object is projected from point O with initial velocity U in vertical plane A mirror Mforms the image of object as shown Time after which relative velocity of object...
- Q Board 5 In the given LR circuit switch S is closed at t 0 The energy stored in the magnetic field 3L at time to In2 is 2R 1 2...
- Q 2 It is given that angular momentum of an electron in a particular orbit of hydrogen like atom of atomic number Z is L Assuming Bohr s model and angular...
- Q 3 Two immiscible liquids of density 4 gm cm 6 gm cm are mixed such that their volumes are same What will be density of mixture A B C D...
- Q marks The system shown in the figure is initially at origin and is moving with a constant velocity 5m s k A force F 120t i acts on mass m2...
- Q The maximum angle to the horizontal at which a stone can be thrown so that it always moves away fr the thrower will be atfavi v 37fdcbqTH fb u U...
- Q Is given that g H Hz Find angle made by the ray of light with the normal in medium of refractive index 3 1 i 3 sin sini LL Air...
- Q 3 A light of frequency 10 0 Hz is incident on a photosensitive material The given frequency is 2 5 times of Threshold frequency If above incident frequency is made...
- Q 2013 Consider a finite insulated uncharged conductor placed near a finite positively charged conductor The uncharged body must have a potential A less than the charged conductor and more than...
- Q netic susceptibility of a 2 0 75 3 1 67 angent galvanometer is netic moment M is found y twice that of magnet B and same moment of vibration magnetometer...
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