Physics question and answers for July 26, 2024
- Q What volume of air measured at 0 C and 1 is needed to burn completely 1 L of butane gas C4H10 measured under the same conditions Assume air has 20...
- Q Figure shows velocity time graph v m s 10 0 10 2 Average velocity for entire journey is 2 5 m s Average acceleration from t 1 to t 4...
- Q What is A x B Is the and gate represented by the multip ly sign also As per we had read it s represented by A B or AB The...
- Q 7 A rod of length has varying cross section as shown in figure The resistivity of material is p If potential difference across two ends is V then current through...
- Q other end of the string is connected to rigid support passes over a smooth pulley as shown in the figure The horizontal part of the string has length 100 m...
- Q DA A straight rod of length L extends from x a to x L a Find the gravitational force it exerts on a poin mass m at x 0 if...
- Q the given circuit initial charge on the ALI capacitor is 1 5 C with polarity as shown in figure and current in the inductor is zero Now at t 0...
- Q 78 Positronium is like a H atom with the proton re by positron a positively charged antiparticle of the electron which is as massive as electron The ground state energy...
- Q answer Rain is falling vertically with a velocity of 3 kmh A man walks in the rain with a velocity of 4 kmh The rain drops will fall on the...
- Q A block of mass 5kg released from rest on the top of the smooth inclined plane which is fixed to table as shown in figure It then slides on a...
- Q If a particle is moving on a curved path with constant speed then O Velocity remains constant O Body is said to be under acceleration O Body remains unaccelerated Body...
- Q The following graph shows two isotherms for a fixed mass of an ideal gas The ratio of r m s speed of the molecules at temperatures T and T is...
- Q A boy runs on a circular path of radius 14m with a constant speed 4 m s Another boy starts from center of the path to catch the first boy...
- Q Find the incorrect option for given v t graph 20 A 10 B 10 D 20 30 40 E G 50 60 70 F 1 In AB DE and GH...
- Q A car is moving with speed 72 km h on a straight road Suddenly brakes are applied due to which car retards at the rate of 10 m s distance...
- Q e figue shows an equiconcave lens placed on a plane mirror The focal length of lens in air is 30 cm e refractive index of lens is 1 5 and...
- Q 2 23 A parallel plate capacitor of plate area A and plate separation d is connected across a battery of voltage Vand after charging of capacitor battery is disconnected Now...
- Q A potentiometer wire 10 m long has a resistance of 40 Q It is connected in series with a resistance box and a 2 V storage cell If the potential...
- Q Q10 A uniform pressure of 7 0x105 N m is applied to all six sides of a copper cube What is the percentage change in volume of the cube for...
- Q A uniform rod of mass M and length L is hinged a one end and a spring of stiffness constant 2K attached with rod as shown in the figure The...
- Q 1 A distant telephone whose resistance is 300 ohm is connected to the exchange 10 miles away by a pair of telephone wires whose resistance singly is 5 ohm per...
- Q A 150W solar PV panel produces 15V and 7A when it is connected to a load under solar insolation of 700W m 2 If the panel area is 1 5m...
- Q 91 A hydrogen atom and a Litt ion are both in the second excited state If I and I are their respective electronic angular momenta and EH and EL thei...
- Q Figure shows a bar of mass m moving with a constant speed vo on horizontal surface around a semi circular fence of radius R The average normal force acting on...
- Q I have seen the solution of this question but I did not und erstand how and why have we used the concept of TIR her e How do we know...
- Q conducting rod of length 5 m slides in a vertical plane against two insulated perpendicular surfaces s shown Outward uniform magnetic field B 3 tesla exists in the region If...
- Q In Young s double slit experiment two wavelengths of light are used simultaneously where 2 22 In the fringe pattern observed on the screen 26 Fi 1 maxima of wavelength...
- Q 5 The binding energy of an electron in the ground state of He is equal to 24 6 eV The energy required rease have emblrin definitions to remove both the...
- Q 2 39 A parallel plate capacitor with plates kept at a separation 1cm and plate area 100cm is connected across a 24V battery Find the force with wihch one plate...
- Q 015 sa caulap 2 0060 O A Inversely related to the frequency of the input voltage O B Directly proportional to the frequency of the input voltage O C Independent...
- Q Two particles of equal masses are revolving in horizontal circular paths of radii r and r2 respectively with the same time period The ratio of their centripetal force is Question...
- Q Q11 A person rubs a neutral comb through their hair and the comb becomes negatively charged Which of the following is the best explanation for this phenomenon O A The...
- Q Two small blocks tied with a massless string of length 3 m are placed on a rotating table as shown The axis of rotation is 1 1 m from 1...
- Q 5 If a b and c then determine p and q are any three non coplanar vectors then prove that points ha mb m c 14 h a m b...
- Q The ammeter reading in the following circuit will be 60 www 202 wwww 602 wwww 60 www A B 1 8 LOU 2V
- Q Four rods of same material having same cross section length have been joined as shown in figure The temperature of the junction of four rods will be 0 C 90...
- Q Relation between the ratio of specific heats y of gas and degree of freedom f will be Question Type Single Correct Type 1 y f 2 2 1 1 1...
- Q From the following displacement time graph find out the velocity of a moving body Time sec 30 Displacement meter Question Type Single Correct Type 1 3 m s 2 3...
- Q Bottom face of the glass cube is silvered as shown A ray of light is incident on to face of the cube as shown Find the deviation of the ray...
- Q Six PV modules are connected in series to a load Each module has Voc 48 V and Isc 3 2 A what is the total Voc and Isc O Voc...
- Q Example 18 An object accelerates uniformly from initial velocity u to final velocity v It travels distance s in time t Then check the dimensional consistency of the following equations...
- Q 2 Zero 4 20 0 2 1 0 0 0 1 3 0 0 0 4 The diameter of a wire is measured to be 0 0205 x 10 m...
- Q Q3 Two coherent beams of light having intensities I and 41 interfere to produce fringe pattem on screen The phase difference between beams is 1 2 at point A and...
- Q A positively charged particle moving due east enters a regi on of magnetic field directed upwards This particle will Ans move in circular path with uniform speed So won t...
- Q Two fixed frictionless inclined plane making an angle 30 and 60 with the vertical are shown in the figure Two block A and B are placed on the two planes...
- Q Six moles of an ideal gas perfomrs a cycle shown in figure If the temperature are TA 600 K TB 800K Tc 2200 K and TD 1200K the work done...
- Q 100 g of ice at 0 C is mixed with 100 g of water at 100 C What will be the final temperature of the mixture Question Type Single Correct...
- Q A uniform rod of length L and mass M is pivoted at the centre Its two ends are attached to two springs of equal spring constants k The springs are...
- Q Two men pull a rope from which a mass is hanging as shown Both apply a force of 100 N each What force should each apply to make the rope...
- Q If the value of resistance is 10 845 ohm and the value of current is 3 23 amp the value of potential w significant numbers would be 1 35 0...
- Q 12 If electric field in a region is given as 3 k 1 1 Exi E0 E0 E 5 x 10 N C 1 2 cm then calculate the flux...
- Q Q4 Ablock of transparent material is shined by a laser beam along the surface as shown in figure One half of the beam goes straight to detector while other half...
- Q A 30 kg block rests on a rough horizontal surface A force of 200 N is applied on the block The block acquires a speed of 4 m s starting...
- Q Before jumping from the bridge Martin throws his water bottle to a friend standing on the bank of the lake The bridge is 7 0 m high The friend is...
- Q A liquid drop of diameter D is divided into 27 equal droplets If the surface tension is T then the change in energy will be Question Type Single Correct Type...
- Q Which of the following measurement is more accurate 1 40 m 3 400 x 10 m 2 0 04 m 4 4 x 10 m If the random error in...
- Q Let En 2 212 8 n h be the energy of the nth level of H atom If all the H atoms are in the ground state and radiation of...
- Q O Consider aiming a beam of free electrons towards free protons When they scatter an electron and a proton cannot combine to produce a H atom because of a energy...
- Q The parallax of a far off planet as measured from the two diametric extremes on the equator of the earth is 2 0 minute If the radius of the earth...
- Q on 49 When an electron falls from a higher energy to a lower energy level the difference in the energies appears in the form of Madia a electromagnetic radiation only...
- Q A projectile is thrown from a point O on the ground at an angle 45 from the vertical and with a speed 5 2 m s The projectile at the...
- Q Let three be a spherically symmetric charge distribution with charge density varying as p r Po 5 r upto r R and p r 0 for r R where r...
- Q If the earth rotates faster than its present speed the weight of an object will Question Type Single Correct Type 1 2 3 A Increase at the equator but remain...
- Q Find M in kg for which m will start sliding over m Table on which m and m are placed is smooth u is the friction coefficient between m and...
- Q 1 e force 5t N is applied on a block as shown in figure where t is time in second If coefficient of friction force between block and surface is...
- Q inductor and a bulb are connected in series with a dc source A soft iron core is then inserted in the uctor What will happen to intensity of the bulb...
- Q 93 In the diagram the input is across the terminals A and C and the output is across B and D Then the output is A a zero c full...
- Q 25 For a particle in uniform circular motion the acceleration a at a point P R 0 on the circle of radius R is here 0 is measured from the...
- Q A water tank standing on floor has two small holes punched in vertical wall one above the other The holes are 2 4 cm and 7 6 cm above the...
- Q 1 An ionised H molecule consists of an electron and two protons The protons are separated by a small distance of the order of angstrom In the ground state a...
- Q Which of the following gates will have an output of 0 00 C 1 d Question Type Single Correct Type 2 a 3 b 00 10 4 c 00 00...
- Q A small satellite is in elliptical orbit around Earth as shown If L denotes the magnitude of its angular momentum and K denotes kinetic energy L L and K K...
- Q Three products are being considered as possible thermal The thicknesses insulators conductivities of the three products are as follows Product I Product II Product III Conductivity arbitrary units arbitrary units...
- Q Q14 A beam of electrons of velocity 6 00 x 10 m s is made to strike a metal target in the Coolidge tube to produce x rays The minimum...
- Q Q Nos 10 11 are based on the following paragraph A nucleus of mass M Am is at rest and decays into two daughter nuclei of equal mass M each...
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