Physics question and answers for August 02, 2024
- Q I V characteristics of solar cell lies in third quadrant of co ordinate axes y A B 14 The Boolean expression Y A B represents the 1 AND gate ZNA...
- Q A stone dropped from a balloon at rest from a certain height passes through 81 m in the last s before it strikes the ground Find the height of the...
- Q 12 In a transformer primary voltage is 220V and secondary current is 0 11A with output power 60W 1 Transformer is step up 3 Transformer is auxiliary Ans 1 Sol...
- Q A body slips from a balloon ascending vertically with a velocity of 24 5 m s The body reache the ground in 20 s What was the height of the...
- Q The transverse stationary wave on a stretc wire Clamped at its both ends is given y x t 0 06 sin x cos 120nt 2A 3 where x and y...
- Q A ball is thrown vertically upward from the ground level with a velocity of 19 6 m s How long does it take to reach the maximum height What maximum...
- Q 7 Find the average speed of the Earth as it goes around the Sun in m s Use C 2mr for the total distance the Earth travels in one revolution...
- Q 1 Determine the Momem of mertia with respect to the centroidal axes Also find the radius of gyration and polar moment of inertia 15 500 MOM 15 350 650 mm...
- Q A wave travelling along a string is describ by y x t 0 005 sin 20nt 10 x 2 where x is in cm and t is in sec Calculate...
- Q 3 S2 29 Three long wires carrying current 10 A 20 A and 30 A are placed parallel to each other as shown Point P and Q are in midway...
- Q If electron and proton are accelerated by same potential difference 100 V then find the ratio of their de Broglie wavelength M 9 1 x 10 1 kg Mp 1...
- Q 85 Both light and sound waves produce diffraction It is more difficult observe diffraction with light waves than sound waves because RO light waves do not require medium wavelength of...
- Q Two identical metal spheres A B are charged with equal amount If A is charged positively B charged nagatively then 1 Mass of A increase 2 Mass of A decrease...
- Q 5 A short magnetic needle is pivoted in a uniform magnetic field of induction 1 T Simultaneously another magnetic field of induction 3T is applied at right angles to the...
- Q The nuclear binding energy may be approximated by the empirical expression B E q A a A 3 a 2 A a4 A 2Z A Considering a set of isobaric...
- Q 19 Two blocks of equal mass of 4 kg are conne a string passing over a smooth pulley as shown in the figure The acceleration of the centre of mass...
- Q A block of mass 3m is connected with a string which is wound on pulley of mass m and radius R as shown in the figure If the system is...
- Q This question is from NEST 2020 ses sion 1 answer is there in similar quer ies but there it is given 2nd option w hereas here the answer is given...
- Q A pipe 30 cm long is open at both ends harmonic mode of the pipe resonates a 1 source will resonance with the same sou observed if one end of...
- Q If electron proton are 1A apart start m towards each other due to mutual attra Estimate acceleration of electron approxim 1 1 4 x 1019 m s2 2 2 5...
- Q instant of projection g 9 8m s 22 5 m 2 14 s 15 65m s 3 745 s From the top of a structure 100m high a body is...
- Q From the top of a tower 102 9 m high a body is thrown upwards with a velocity of 19 6 m s How high will it rise and in...
- Q 46 In two dimensional motion instantaneous speed va is a positive constant Then which of the following is necessarily true 1 The average velocity is not zero at any time...
- Q 7 If Gauss s law E ds 0 we can conclude 7 that 1 E must be zero 2 E must be perpendicular to surface 3 Total flux through the...
- Q In a metre bridge the null point is found at a distance of 20 cm from A If a resistance of 120 is connected in parallel with resistor S the...
- Q 1 1 22 The position of a particle moving along x axis given by x 2 3t 5 m The acceleration of particle at the instant its velocity becomes zero...
- Q m s A body is thrown vertically upwards with an initial velocity u How many times must the initial velocity be increased to secure double the height achieved in the...
- Q 98 If the collector current changes from 2mA to 3 mA in a transistor when collector emitter voltage is increased from 2V to 10 V the output resistance is 1...
- Q You have two strings that you can use to connect three masses as you see in the diagram m 2kg m 1kg m 5kg They are placed on a frictionless...
- Q it takes to reach the ground g 9 8 m s 178 4 m 59 13 m s 10 03 s An object is thrown straight up with a speed...
- Q 4 The path difference between two interfering waves at a point on the screen is from 6 central maximum The ratio of intensity at this point and that at the...
- Q 88 De broglie wavelength of an electron movin with a velocity of 1 5 x 108 ms is equal t that of a photon The ratio of kinetic energy o...
- Q its around the sun with sun at with constant velocity ts around the sun with sun at one d maximum distances of a planet 9 10 4 None of these...
- Q Paragraph for questions 24 27 A block of mass 15 kg is placed over a frictionless horizontal surface as shown in Fig 4 120 Another block of mass 10 kg...
- Q 35 If two sounds of very close frequencies 256 Hz 35 and 260 Hz reach our ear simultaneously then we hear a sound of frequency 1 258 Hz 2 4...
- Q Unleashing Potential In the circuit shown in figure input source is periodic and its wave form is 18 Find the reading of cathode ray oscilloscope CRO is R www Sol...
- Q For a p n junction diode barrier potential Vo is shown for unbiased condition 321 Choose the correct statement among the following Both 2 and 3 represents forward biasing hr...
- Q JEE Advanced 2019 Two identical moving coil galvanometers have 10 resistance and full scale deflection at 2 A current One of them is converted into a voltmeter of 100 mV...
- Q 30 In a potentiometer of 10 wires the balance point for measuring the emf of a cell is obtained on 6th wire To shift the balance point on 8th wire...
- Q If a EM wave traveling in vacuum in y direction has magnetic field B 8 10 k Then value of electric field E is 1 24 1 2 eliable INSTITUTE...
- Q 9 What is the launch angle that will produce the maximum range of a projectile if there is no air resistance If there is air resistance will the angle be...
- Q Reliable INSTITUTE JEE MAIN MARCH 2021 DATE 16 03 2021 SHIFT I Unleashing Potential A planet is revolving around sun in elliptical orbit Maximum minimum distance of planet from sun...
- Q Two trains 200 m and 150 m long are running on parallel rails at the rate of 40 kmph and 45 kmph respectively If they are running in the same...
- Q The potential energy of a 2 kg particle free to move along the x axis is given by V x J The total mechanical energ 2 of the particle is...
- Q 13 discharging graph In YDSE D 10 m d 1 mm and fringe width of interference pattern is 0 6 nm evaluate in nm 600 0 6 x 10 10xx...
- Q 48 Read following statements carefully and mark the correct option Statement 1 With the displacement wave we can produce a pressure wave and Statement 2 Displacement and pressure wave both...
- Q A particle undergoing rectilinear motion has its velocity vs distance travelled as shown below 1 3 s 3 Draw its acceleration vs distance graph 50 In interval 0 to 200m...
- Q Two logic circuits are shown in the figure A a BB The logic operation carried out by the two circuits are respectively A b NAND AND AND OR NAND NOR...
- Q A parallel plate capacitor with A wL is partially filled to a distance h with a material of dielectric constant K a What is its capacitance as a function of...
- Q T Two perpendicular harmonic oscillations x a sin oot 2 y a sin at are superposed What will be the resultant motion y sin at T add af x asin...
- Q 6 Calculate final velocity of the particle of mass 2kg if initial velocity of it is 6 m s A force if it is acted on it and whose variation...
- Q 8 A particle of mass m and charge q projected with a speed u at an angl e above the horizontal after travelling a horizontal distance xo enters region where...
- Q xample 18 Three particles of masses m 2m and 3m are placed at the comers of an equilateral triangle of side a Calculate 0 0 The potential energy of the...
- Q 34 A series LCR circuit is connected to an ac source of variable frequency When the frequency is increased continuously starting from very small value the power factor 1 Goes...
- Q Consider a parallel plate capacitor for which the plates are separated by a vertical distance 2d Suppose that the space between the plates is filled with two slabs of linear...
- Q The output of the given circuit in figure shown R www V Will be zero for all time Is Half wave rectified with Positive cycle in output Is Half wave...
- Q The displacement of the wave given equation y x t asin kx ot wh p 0 at point x and t 0 is same as that at poi 1 x...
- Q 3 10 The wavelength of a standing wave in a 40 cm The phase difference between two particles separated by distance 10 cm will be 240 1 Zero 3 T...
- Q A particle of mass rotates in a circle which has a vertical boundary of radius 0 2 meter rotating in horizontal plane Mass of the block is 200 gram It...
- Q If you weigh 655 N on the earth what would be your weight on the surface of a neutron star that has the same mass as our sun and a...
- Q O Single Correct MCQ A student measured the length of a rod and wrote it as 3 50 cm Which instrument did he use to measure it A B C...
- Q The mass of a pigeon hawk is twice that of the pigeons it hunts Suppose a pigeon is gliding north at a speed of Up 24 2 m s when...
- Q The transfer characteristics between V and V for CE transistor is shown in the figure KL V The region in which transistor acts as a switch ON is Roth Land...
- Q wind turbine has 12 000 kg blades that are 9 m long The bladen spin at 23 rpm Part A If we model a blade as a point mass at...
- Q A bullet of mass m embeds itself into a larger block of mass M If the maximum angle that the bullet block system rises after the collision is 60 the...
- Q ray comes to the first mirror reflects and hits second mirror If this ray turns back on itself after reflecting from the second mirror find the focal point of the...
- Q In photoelectric experiment both sodium work function 2 3 eV and tungsten work functio 4 5 eV were illuminated by an ultraviolet light of same wavelength If the stopping potent...
- Q O Single Correct MCQ A bob of mass m attached to an inextensible string of length is suspended from a vertical support The bob rotates in a horizontal circle with...
- Q uniform circular motion changes continuously A Angular displacement is vector quantity only for small values R The direction of angular displacement is perpendicular to plane of rotation of object
- Q A glass prism of refractive index 1 5 is immersed in 4 a liquid of refractive index as shown in the figure 3 A light beam incident normally on the...
- Q The 11 A large number of identical point masses m are placed along x axis at x 0 1 2 4 magnitude of gravitational force on mass at origin x...
- Q Current passing through a b will be respectively 10V 1 2 3 Question Type Single Correct Type 100 1A 1A 0 0 1092 1A 0 b 100 10V
- Q Figure shows the elliptical path of a planet about the sun The two shaded parts have equal area If t and t are the time taken by the planet to...
- Q The I V characteristics for two semiconductor devices are shown in figure A V Volt A a The corresponding devices are LED Solar cell LED Photodiode Photodiode Solar cell Photodiode...
- Q R At resonance the applied voltage is Q times voltage drop across inductance for capacitance A If a current has both ac and dc components then a dc ammeter used...
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