Physics question and answers for July 31, 2024
- Q Which of the following quantities depend on the choice of zero potential or zero potential energy 3 1 Potential at a point 2 Potential difference between two points 3 Change...
- Q An experiment is performed to obtain the value of acceleration due to gravity g by using a simple pendulum of length L In this experiment time for 100 oscillations is...
- Q 24 A ball rolls off the top of a stair way with a horizontal velocity 10 10 m s If the steps are 0 25 m high and 5 m...
- Q 49 Four equal masses each of mass M are placed at the corners of a square of side a The escape velocity of body from the centre O of the...
- Q Two charged spheres of radii 10 cm and 15 cm are connected by a thin wire No current will flow if they have 1 The same charge on each 2...
- Q b Monochromatic light passes through the double slit and causes interference Find the wavelength of the light source when the spacing of the slits is 1 2 mm the distance...
- Q A prism is made of glass of refractive index 3 The refracting angle of prism is A If angle of minimum deviation is equal to A the value of A...
- Q What is the effect on the image formed by the convex lens if the central portion of the lens is wrapped in black paper as show in the figure Lens...
- Q A tank is filled with a liquid upto a height H A small hole is made at the bottom of this tank Consider t be the time taken to empty...
- Q a The young s experiment was conducted using a green light source with a wavelength of 550 nm When the distance between the slit and the screen is 1m and...
- Q Interference fringes were produced in YDSE using light of wavelength 5000 When a film of transparent material with 2 5 x 10 3 cm thick was placed over one of...
- Q 180 A compound microscope has a magnification of 30 when final image is formed at 25 cm from the eye piece What is magnification produced by the objective if the...
- Q A ventilated room has a temperature of 15 C What happened to the speed of sound if the temperature is doubled every 10 minutes Using the equation complete the table...
- Q 11 A pair of spur gears consists of a 24 teeth pinion rotating at 1000 rpm and transmitting power to a 48 teeth gear The module is 6 mm while...
- Q An object is placed at a distance x from a convex lens The power of the lens required to have an image real times magnified is n 1 nx nx...
- Q A person can see clearly upto a distance of 30 cm He wants to read a book placed at distance of 50 cm from his eyes What is power of...
- Q 4 The rate of mass of the gas emitted from rear of a rocket is initially 20 kg s If the speed of the gas relative to the rocket is...
- Q A cylinder is placed on a horizontal surface particle is projected with speed u and it crosses the cylinder by just touching at two points as shown in figure Then...
- Q Q Q Two cylinders P and 2 of equal capacity are connected to each other via a stopcock Cylinder P contains an ideal gas at standard temperature and pressure Cylinder...
- Q Aperture of human eye is 2 mm Assuming the mean wavelength of light be 5000 The angular limit of resolution of eye is nearly 0 1 minute 2 minute O...
- Q A box of mass 4 kg placed on a horizontal floor is acted upon by a horizontal force F that varies with time t as shown in the given graph...
- Q 7 Two block of masses m and m are connected with the help of a spring of spring constant K initially the spring in its natural length as showsn A...
- Q 4 3 Example 24 A bird in air is diving vertically over a tank with speed 5 cm s base of tank is silvered A fish in the tank is...
- Q A plane surface separates a denser medium of refractive index 1 50 from air A plane wavefront travelling in air is incident on the interface of an angle of incidence...
- Q Light of wavelength 500 nm falls on a metal of work function 1 9 eV The stopping potential in this experiment of photo electric effect is O 0 34 V...
- Q 2 A uniform string of length 20 m is suspended from a rigid support A short wave pulse is introduced at its lowest end It starts moving up the string...
- Q 16 In the network shown the potential difference between A and B is R r r r 192 E 3 V E 2 V E3 1V E A R r...
- Q A ball A moving with a speed of 99 ms collides directly with another identical ball B moving with a speed v in the opposite direction A comes to rest...
- Q When wave of wavelength 0 2 cm in made to incident normally on a rectangular slit of width 0 004 m then semiangular width of central maxima of diffraction pattern...
- Q A double slit apparatus is set up and green light is used to form the interference pattern The green light is then replaced by red light Which of the following...
- Q 5 Two nucleons are at a separation of one fermi Protons have a charge of 16 x 10 19 C The ne nuclear force between them is F if both...
- Q A circular disc of radius R is removed from a bigger circular disc of radius 2R such that the circumferences of the disc coincide The centre of mass of the...
- Q Consider the barometer shown in figure Density of mercury A small hole is made at point S as shown The mercury com out from this hole with speed v equal...
- Q If 5 of the energy supplied to a bulb is radiated as visible light how many photons are emitted per second by 100 watt lamp Wavelength c visible light taken...
- Q The acceleration of a particle moving along straight line decreases linearly from a value of 15 m s2 at t 0 It has zero value at t 5 s At...
- Q Case Study 3 The nature position and size of the image formed by a spherical mirror depends on the position of the object in front of it The image formed...
- Q 50 Energy of a satellite in circular orbit is Eo The energy required to move the satellite to a circular orbit of 3 times the radius of the initial orbit...
- Q A conductor of area of cross section A having charge carriers each having a charge q is subjected to a potential V The number density of charge carriers in the...
- Q The minimum and maximum distances of a satellite from the centre of earth are 2R and 4R where R is radius of earth If mass of the earth is M...
- Q 2x 5 body of 47 What impulse need to be given to a tunnel passsing through centre of earth at the c released from the surface of earth along a...
- Q 39 Half lives of two radioactive nuclei A and B are 10 minutes and 20 minutes respectively If initially a sample has equal number of nuclei then after 60 minutes...
- Q answer out of which ONLY ONE is correct choice questions Each question has 4 choices A B C and D for its 1 If a force F 31 43 5k...
- Q Hypertonic urine formation is a characteristic of kidneys of Fishes and amphibians Amphibians and reptiles Reptiles and birds Birds and mammals Correct Answer nammals Your Answer XX Reptiles and birds
- Q In figure block 1 is one fourth the length of block 2 of mass also one fourth No friction exists between block 2 and surface on which it rests Coefficient...
- Q 38 An image of the sun is formed by a lens of focal length 30 cm on the metal surface of a photo electric cell and it produces a current...
- Q K and K When points A and C are maintained at different temperature no heat flows through the central rod if ons are arranged as shown in the figure They...
- Q A particle P is moving in a circle of radius a with uniform speed v C is the centre of the circle and AB is a diameter The angular velocity...
- Q A needle of length 10 cm is placed along the principal axis of a concave mirror of focal length 20 cm such that the end closer to mirror is at...
- Q A satellite is revolving round the earth in an orbit of radius r with time period T If the satellite is revolving round the earth in an orbit of radius...
- Q 18 An ideal gas expands from state A to B as shown in the figure T P A M B Choose the incorrect option 1 Work done by the gas...
- Q 3 28 A conducting wire of resistance 1202 at 20 C is connected in a circuit Due to current flow in it its resistance increases to 24092 Find the final...
- Q Light with an average flux of 10 w em falls on a non reflecting surface at normal incidence having surface area 40 cm The energy received by the surface during...
- Q WY SECI PHY SECH PHY SEC Question 11 Mul Select Type CHEM SECI CHEM SEC CHEM SECH MATH SEC MATH SECE MATCH QUESTION STATU A dumbbell is constructed by fing...
- Q Assignment Problem 7 A line charge with linear charge density of p 10 12 C m passes through the center of a sphere If the flux through the surface of...
- Q 14 In the following arrangement table and pulley are smooth Rope is ideal The monkey of mass m moves upward with respect to the rope with acceleration a Find acceleration...
- Q A cylinder horizontal is placed on a surface A particle is projected with speed u and it crosses the cylinder by just touching at two points as shown in figure...
- Q A toy car is moving on a circular path of radius 10 m on an inclined plane of inclination 30 The coefficient of friction between the tyres and the inclined...
- Q Two balls each of mass 2 kg one at rest undergar oblique collision If collision is perfectly elastic them the angle between their velocities after collision is 1 30 3...
- Q ion ends upon the length of th Assertion In the phenomenon of mutual induction self induction of each of the coil persists Reason Self induction arises due to change in...
- Q An optical bench has 1 5 m long scale having four equal divisions in each cm While measuring the focal length of a convex lens the lens is kept at...
- Q 26 A mono atomic gas is filled in a heat insulated horizontal cylindrical is The P container at pressure p and temperature T Density of the gas container is abruptly...
- Q A body starts from rest with acceleration 2 m s for some time then retards with 4 m s and finally comes to rest If the total time of journey...
- Q Two particles having position vectors 61 101 metres and 2 101 6 metres are moving with velocities V 81 61 m s and v 2a 14 m s If they...
- Q orbit 5 If an artificial satellite is moving in a circular around the earth with a speed equal to half the height of the satellite above the surface of the...
- Q two 1 7 Two point dipoles pk and k are located at 0 0 0 and 2 1m 0 2m respectively Find the resultant electric field due to the two...
- Q 2 If linear mass density of a rod of length 3 m lying from y 0 to y 3 m varies as 2 y kg m then position of the...
- Q A particle of mass m moving in x direction with speed 2v is hit by another particle of mass 2m moving in the y direction with speed v If the...
- Q If the refractive index of glass is 3 2 and that of water is 4 3 the critical angle for glass water media is 3 4 A sin sin 86...
- Q A metal wire of length L and area of cross section A is attached to a rigid support Another metal wire of length L and of the same cross sectional...
- Q SolveLancer Test A fair die is thrown 8 times Find the probability that a prime number will ap 36b png maximum three times on the throws SolveLancer Test 8 a...
- Q A object is moving parallel to principal axis of a concave mirror of focal length 100 cm Distance between and principal axis is 1 cm The langent of angle between...
- Q If the air of weight w is filled in an empty balloon which weighs w the weight of the balloon will become w Suppose the density of the air inside...
- Q A non conducting disk of radius 3 m having uniform charge density o 1 C m is rotating with and angular velocity w 1 rad s about its central axis...
- Q A motorcycle is moving with a velocity of 6 Okm hr and it takes 8secs to stop after the brakes are applied C alculate the force exerted by the brakes...
- Q A thin string is wrapped several times around a cylinder kept on a rough horizontal surface A boy standing at a distance from the cylinder draws the string towards him...
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!