Physics question and answers for September 09, 2024
- Q Two swimmers start swimming perpendicular to river flow with different constant speeds at the same time After reaching the opposite bank they have to walk back to reach the point...
- Q An AC source of angular frequency o is connected with a resistance R and an uncharged capacitance C in series The potential difference across the resistor is in phase with...
- Q 00 53 36 You are proctored by invigilator BHOLE RAJWARDHAN SANJAY XFx Note Click on image to enlarge it 200N 300 N O 129 29 N O 102 49 N...
- Q As shown in figure a rectangular loop of length L and breadth b is placed near a very long wire carrying current I The side of the loop nearer to...
- Q A coil having 200 turns has a surface area 0 12 m A magnetic field 32 34 0 10 Wbm 2 linked perpendicular to this area changes to 0 5...
- Q Prove that the average value of an A C voltage source is given by V Vsinoot is equal for half period of its cycle The value of the A C...
- Q 12 Using the expressions for charge and current for L C oscillator explain L C oscillations 13 Derive expression P Vrms Irms cosd for an A C circuit 14 Using...
- Q Question 15 The centroidal distance of a semicircle with R as its radius wrt its base is 4R 3 3R 4 3R 8 45R 3
- Q Question 25 The distance of center of gravity for a hemisphere with R as its radius wrt its base is 4R 3 3R 4 3R 8 8R 3
- Q 3 With x axis westward and y axis southward the coordinates of two places are 150 m 200 m and 450 m 600 m The distance between the places is...
- Q d The relationship between the change of resistance and RTD is given by the following Eq Q 5 d RT RT20 1 20AT Where UHAN UNTU20 0 00392 for platinum...
- Q 7 In Young s double slit experiment if the distance between two slits is double than the wavelength of light used Prove that a maximum 5 bright fringes will be...
- Q One mole of an ideal monoatomic gas goes through a cyclic process shown in the graph Mark the correct statements V m5 T K PV diagram for the cyclic process...
- Q In the circuit shown in figure 3 240 switch S is closed at time t 0 Find the current through different wires and charge stored on the capacitor at any...
- Q ply supported beam of span 4m ted to an anticlockwise couple m at the center of the beam reaction at the LHS Left t will be 1 N I
- Q A 5m aluminium wire Y 7 x 1010 N m of diameter 3 mm supports a 40 kg mass In order to have the sam elongation in a copper wire...
- Q Q15 Reciprocal of bulk modulus is called compressibility If pressure experienced by certain volume of liquid increases by two times the compressibility becomes O A Compressibility will not vary under...
- Q In ultrasonic level sensor Distance between receiver and transmitter is 80m and having flow velocity of fluid is 20m s with velocity of sound 40m s find time taken to...
- Q 09 Two positive point charges repel each other with force 0 36 N when their separation is 1 5 m What force do they exert on each other when their...
- Q A galvanometer has a resistance of 3663 ohm A shunt S is connected across it such tha 1 34 of the total current passes through the galvanometer Then the value...
- Q JADHAV TANMAY NITIN Question 21 A machine is said to be ideal when M A V R Efficiency 100 M A V R Can t say
- Q The Young s modulus of steel is twice that of brass Two wires of same length and of same area of cross section of steel and another of brass are...
- Q A current I 10 A flows in a ring of radius ro 15cm made of a very thin wire The tensile strength of the wire is equal to T 1...
- Q A plane electromagnetic wave travelling along X direction has electric field of amplitude 300 V m directed along the Y axis a What is the intensity of the wave b...
- Q Which of the following expression is correct to determine time period of squar wave generator T 2RCIn Option 2 R1 R2 R2 Anticna R1 R2 R2 RCIn 2RCIn 2R R...
- Q A thin spherical conducting shell of radius R has a charge q Another charge Q is placed at the centre of the shell The electrostatic potential at a point P...
- Q Question 11 If frictional force is 100N and the normal reaction is 200N then the resultant reaction is 300N 150N 322 16N 00
- Q An AC source of angular frequency w is connected with a resistance R and an uncharged capacitance C in series The potential difference across the resistor is in phase with...
- Q volts After that it starts decreasing Determine the frequency of the voltage source Ans 1 Hz 9 An A C circuit contains only an inductor The frequency of voltage source...
- Q An AC Bridge enables us to perform precise measurements for reactance measurement determining the Q factor and frequency measurement An AC Bridge is shown in Figure Q 2 b UNIVE...
- Q 5 Figure 10 W18 shows two cylinders of radii r and r having moments of inertia I and I about their respective axes Initially the cylinders rotate about their axes...
- Q 70 71 72 73 74 30 A particle moves along the x axis in such a way that its position coordinate x varies with time t according to the expression...
- Q In a capillary tube experiment a vertical 30 cm long capillary tube is dipped in water The water rises up to a height of 10 cm due to capillary action...
- Q A conducting loop of radius r is placed concentric with another loop of a much larger radius R so that both the loops are coplanar Find the mutual inductance of...
- Q 4 In Young s experiment the distance between two slits is 1 mm and the distance between two consecutive bright fringes is 0 03 cm Now on displacing the screen...
- Q A diode is a device that allows current to be carried in only one direction the direction indicated by the arrowhead in its circuit symbol Find approximately in terms of...
- Q Two coils placed near to each other have number of turns equal to 600 and 300 respectively On passing a current of 3 0 A through coil A the flux...
- Q If the electric potential of the inner metal sphere is 10 volt that of the outer shell is 5 volt then the potential at the centre will be 1 10...
- Q Question 10 A Force of 60 N acting tangentially to a circle of radius 2 m It s moment about diametrically opposite point will be Nm 120 240 30 60
- Q Wing ratings PIV Peak Inverse Voltage and temperature is true Si diodes have wider temperature ranges and higher PIV than Ge diodes O Si diodes have lower PIV and narrower...
- Q A galvanometer has a resistance of 30 ohm and a current of 2 mA is needed to give a full scale deflection What is the resistance needed to convert this...
- Q A flat dielectric disk lying in x y plane of radius R 1 m carrying charge density o 1 C m is rotating with angular velocity 1 k rad s...
- Q SolveLancer Test Their velocities are shown in graph below In the period of 20 sec what is the maximum seperation between them X m s 10 5 SolveLancer Test a...
- Q A conducting bar of 2 m length is allowed to fall freely from a 50 m high tower keeping it aligned along the east west direction Find the emf induced...
- Q 10 In an A C circuit maximum voltage and maximum currents are 220 V and 4 4 A respectively Calculate power and power factor in the circuit Here X 30...
- Q 2 Assertion A cyclist bends inwards from his vertical position while turning to secure the necessary centripetal force Reason Friction between the tyres and road provides him the necessary centripetal...
- Q Ans LA 24 mH MB 30 HJ There are 1 5 x 104 turns in the winding of a toroidal ring The radius of circular axis of the ring is...
- Q 2 Light of wavelength 5000 is incident on a slit of width 2 mm in Fraunhoffer diffraction Find the width of second maximum on the screen placed at the focal...
- Q 28 A current of 8 A flows in a metallic conductor of cross section 1 cm and length 10 km Free electron density of copper is 5x1028 m The time...
- Q L 8 1 mH C 12 5 F and R 100 2 are connected in series with A C source of 230V and frequency 500 Hz Calculate voltage across the...
- Q 2 5 of the total energy of a 100 W bulb is converted into visible light Calculate the average intensity at a spherical surface which is at a distance of...
- Q x x 51 5 n 4 tan n Which of following can not be polarised 1 Radio waves 2 Ultraviolet rays 3 Infrared rays 4 Ultrasonic waves A polaroid is...
- Q 2 In an Young s experiment the distances between two slits and that between slits and the screen are 0 05 cm and 1 m respectively Find the distance between...
- Q 8 A rectangular coil of sides 2 cm and 3 cm respectively has 10 turns in it It carries a current of 1 A and is placed in a uniform...
- Q Three concentric conducting spherical shells carry charges as follows 4Q on the inner shell 2Q on the middle shell and 5Q on the outer shell The charge on the inner...
- Q A particle of mass m and charge q moves with a constant velocity v along the positive x direction It enters a region containing a uniform magnetic field B directed...
- Q jo 0 25 where is the wavelength of the light used obtain the conditions for constructive and destructive interference at point P 7 In Young s double slit experiment if...
- Q For a first order reaction the time taken to reduce 1 the initial concentration to a factor of is 10 minute 4 If the reduction in concentration is carried out...
- Q If a parallel beam of light of circular cross section having radius 10 mm falls on the surface of glass slab at an angle 30 with the surface of slab...
- Q Assertion A car moving on a horizontal road may be thrown out of the road in taking a turn due to lack of proper centripetal force Reason If a particle...
- Q 97 The refractive index of vitreous humor in our eye ball is1 34 Visible light of wavelength ranges from 402 nm to 670 nm as measured in air The wavelength...
- Q 13 Derive expression P Vs Irms cosd for an A C circuit 14 Using P Vrms Irms cos discuss the special cases for power consumed in an A C circuit...
- Q 240 A particle of mass 2 kg is moving in circular path with constant speed 10 m s The change is magnitude of velocity when particle travels from P to...
- Q b 70 3b A particle moves along the x axis in such a way that its position coordinate x varies with time t according to the expression x 2 5t...
- Q An observer is at 2 m from an isotropic point source of light emitting 40 W power What are the rms values of the electric and magnetic fields due to...
- Q O 32 V F is force and V is velocity List l 1 11 B a Q L T III 3 R ML IV a S T U a P...
- Q Which of the following is a non conservative force 1 Buoyant force 2 Electric force experienced by a charge kept in a time varying magnetic field 3 Electric force experienced...
- Q 6 A alone can do a piece of work in 3 days while B alone can do the same work in 2 days If they wor together to complete the...
- Q Plane z 0 y 100 TONY X P Wide curved trace section Thin trace section L iii If the field at point P due to the thin trace section is...
- Q Line x 2 z 2 carries charge of linear charge density 2 nC m while plane x 2 carries charge of surface charge density nC m Find the force N...
- Q 6 A wire suspended vertically from one of its ends is stretched by attaching a weight of 500N to the lower end The weight stretches the wire by 2mm Then...
- Q A uniform wire of resistance R is stretched uniformly to n times its original length and then cut to form five wires of equal length These wires are arranged as...
- Q 5 In an ideal transformer input A C voltage is 220 V Current in secondary coil is 2 5 A If the ratio of number of turns in primary coil...
- Q A force F k acts at origin then torque of the 10 force w r t to point 1 1 is 1 F i j 3 F i j 2...
- Q Assertion Mass is a property of one object alone whereas weight results from the interaction of two objects Reason The weight of an object is proportional to its mass
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