Physics question and answers for July 03, 2024
- Q 34 A body A starts from rest with acceleration a After 2 seconds another body B starts from rest with acceleration a If they travel equal distance in 5th second...
- Q Three long straight and parallel wires carrying current are arranged as shown in figure The force experienced by 10 cm length of wire Qis R Q P 2 cm 20...
- Q 15 The mass of two bodies m and m is given m 2 39 g and m 12 1 g Taking in consideration the significant figures here m m given...
- Q 44 A man swims to and fro along the bank of a river with speed v relative to water If velocity of flow is u then average speed of the...
- Q A particle starts moving with velocity v along straight line A constant acceleration a exists in the opposite direction of motion At the instant when the particle comes to rest...
- Q A person crosses a river along the path AB and again returns to A through same path BA River flows with speed up and the person s speed with respect...
- Q There was initially 100mg of radioactive material After 6 hours its mass decreased by 3 If at any instance its disintegration is proportional to the quantity of material present determine...
- Q From a solid sphere of mass M and radius R a spherical portion of radius R 2 is removed as shown in the figure Taking gravitational potential V Oatr the...
- Q D The position time graph of a body is given X A B t For the motion between B and C a Velocity increases and acceleration ve velocity decreases and...
- Q is equ acceleration is 7 Mark the correct statements a The magnitude of the velocity of a particle to its speed b The magnitude of average velocity in an interval...
- Q Two coils have self inductances L 4 mH and L 8 mH Current in both the coils is increasing at same rate At an instant when power given to the...
- Q 7 The velocity v of a particle moving on a straight line as a function of time t is given as v v gt ff where vo g and fare...
- Q decrease d are true d are true length f produces of the object then mirror is 4 15 cm A square wire of side 3 0 cm is placed 25...
- Q Which statement about a moving object is correct A When an object is accelerating the resultant force acting on it must equal zero B When an object is moving at...
- Q A professor was fishing in Durban during the summer holidays of the year 2020 and happened to hook a bag of treasure that sank in the ocean many years ago...
- Q A body starts from rest with a uniform acceleration of 8 m s Calculate the time in 2 which body attains a velocity of 160 m s How much distance...
- Q m 20 In the figure provided a crate of mass m sits at rest on a 20 ramp and is connected to another crate of mass 1 54 kg by...
- Q A 10kg watermelon is shot horizontally out of a cannon at 10 m s The melon is shot from a roof 20 meters high 1 How long does it take...
- Q Two small spherical similar charged ball ve are tied with thread with the same point A as shown in figure q A 9 If one more ve similar charged ball...
- Q 13 A refrigerator works between 4 C and 30 C It is required to remove 600 calories of heat to keep the every second in order temperature of the refrigerated...
- Q mathon mathor If qf is the free charge on the capacitor plates and q is the bound charge on the dielectric slab of dielectric constant k placed between the capacitor...
- Q A current is flowing through the loop as shown in figure below The magnetic field at centre Ois R 7 i 16R 5 16R 1 90 7 downward 15R I...
- Q 1 An observer can see through a pin hole the top end of a thin rid of height h placed as shown in figure The beaker height 3h and its...
- Q 3 4 0cm 4 3 0cm An object is moving towards a concave mirror of focal length 24 cm When it is at a distance of 60 cm from the...
- Q ce of that lane hen ent An optical fibre is made of glass fibre of refractive index 1 5 The outer coating of the glass fibre is made of material...
- Q in a new system of unit the unit of mass is unit of length is 100 m and unit of time is Convert one joule into this new system 1...
- Q A particle starts moving rectilinearly at time t O such that its velocity v changes with time t according to the equation v t2 t where t is in seconds...
- Q Two ships A and B A is at a separation of L north of B are given such that A st arts to move eastward with a constant speed of...
- Q In trolley string arrangement a painter is holding string in hands and keeps in equilibrium the entire arrangement Mass of painter is 60 kg and mass of trolley is 20...
- Q Three conducting large plates each of area A are arranged parallel to each other a equal separation d as shown Plates 1 2 and 3 are given charges Q 7Q...
- Q A stone is projected from a point on the ground in such a way so as to hit a bird at height 3h and could attain a maximum height 4h...
- Q 3 5 m s 4 3 m s A train is moving on a straight line with constant acceleration The front and the rear end of the train passes a...
- Q A certain charge Q is divided at first into two parts q and Q q Later on the charges are placed at a certain distance If the force of interaction...
- Q A metal rod having a mass per unit length a carries a current I The rod hangs from two wires in a uniform vertical magnetic field as shown in the...
- Q Choose the correct answer 1 A solid sphere of radius R is uniformly charged with charge density p in its volume A spherical cavity of R radius is made in...
- Q Marks 4 0 A body covers first 1 3 part of its journey with a velocity of 2 m s next 1 3 part with a velocity of 3 m...
- Q Marks 4 1 mass of M kg is suspended by a weightless string The horizontal force that is required to displace it until the string makes an angle of 45...
- Q he ratio of am is top end n figure When the h he can ve index A point object is placed at distance of 20 cm from a thin plano...
- Q Here M m m m and Em r is called the first moment of the mass Further r x i y j z k and TCM XCM YCM 1 ZCM...
- Q Assertion A If there exists a coulomb attraction between two bodies both of them may not be charged Reason R In coulomb attraction two bodies are oppositely charged a Both...
- Q A rod of mass m and length 21 is connected to two massless strings as shown in figure A wooden disc of the same mass m is fixed at the...
- Q 11 In the relation y ma m al ma of y is Given m mass a acceleration and Lis length 1 MLT 2 2 MT 43 the dimensions T
- Q Determine the minimum force P required to overcome static fra friction and to lift begin 100N block A as shown in figure The weight of 20 Wedge B is 5N...
- Q A Smooth a 2 3 m b 11 14 m c 7 23 m d 176 34 m 227 X Wall 0 60 u 12 m s m 4 2...
- Q A particle of mass m is driven by a machine that delivers a constant power k watts If the particle starts from rest the force on the particle at time...
- Q On heating water bubbles being formed at the bottom of the vessel detatch and rise Take the bubbles to be spheres of radius R and making a circular contact of...
- Q Figure shows two plane mirrors parallel to each other and an object O placed between them Then the distance of the first three images from the mirror M will be...
- Q Two long straight conductors with current and 12 are placed along x and yaxes as shown in figure The equation of locus of point of zero induction is y O...
- Q A solenoid has 2000 turns wound over a length of 0 30 m The area of its cross section 1 2 x 10 m Around its central section a coil...
- Q small spherical metal ball of radius r is lying at the bottom of a stationary container containing liquid of density p as shown in the figure P mospheric pressure Force...
- Q Given wave function for an electron magnetic wave to be y x t 10 sin 3 106 x 9 x 1014 t The speed of wave is Question Type Single...
- Q In a double mass system two masses one of mass m and the other of 2m d distance apart rotate about their common centre of mass Find the value of...
- Q 8 A drop of water has 550 excess electrons To keep it hanging in the air an electric field of 100 N C acting in vertically downward direction has to...
- Q Convex lens made up of glass g 1 5 and radius of curvature R is dipped into the water Its focal length will be Refractive index of water 4 3...
- Q Two friends are pulling a train cart down some tracks The first friend is pulling with a force F1 at an angle of 34 degrees from the tracks The second...
- Q Susan s 11 0 kg baby brother Paul sits on a mat Susan pulls the mat across the floor using a rope that s angled 30 above the floor The...
- Q None these Power of a convex lens is 5D 1 5 this lens is immersed in a liquid of refractive inde it acts like a divergent lens of focal length...
- Q A horizontal uniform glass tube of 100 cm length sealed at both ends contains 10 cm mercury column in the middle The temperature and pressure of air o either side...
- Q An observer and a vehicle both start moving together from rest towards the right with acceleration 5 m s and 2 m s 2 respectively There is a 2 kg...
- Q Two blocks B and C are connected with a spring of stiffness k A block A is projected with speed v as shown For what value s of I will...
- Q Marks 4 1 Two blocks are connected by a spring The combination is suspended at rest from a string attatched to the ceiling as shown in the figure The string...
- Q Two wires A and B made of same material and having their lengths in the ratio 6 1 are connected in series The potential difference across the wires are 3V...
- Q wo similar charge of Q as shown in figure are placed at A and B q charge is placed at point C midway between A and B q charge will...
- Q A rod of length 2 is rotating about one of its ends with angular velocity w If a magnetic field Bo exists in parallel with axis of rotation then find...
- Q The earth receives on its surface radiation from the sun at the rate of 1400 W m 2 The distance of the centre of the sun from the surface of...
- Q A charged particle having some mass is resting in equilibrium at a height H above the centre of a uniformly charged non conductin horizontal ring of radius R The force...
- Q A cell is connected between the points A and Cof a circular conductor ABCD of same material with centre at O If B and B are the magnitude of magnetic...
- Q Q Assertion A For charges to be in equilibrium sum of the forces on a charge due to rest of the two charges must be zero Reason R The resultant...
- Q 9 Calculate the sensible heat stored per unit volume for the following heat energy mediums when their temperature is increased by 10 C a for water p 1000 Kg m...
- Q A body runs on a circular path of radius R 28m with a constant speed u 4 m s Another boy starts from the center of the path to catch...
- Q A square shaped coil of N turns and side a is rotating with angular velocity w about an axis passing through its centre and perpendicular to its plane A uniform...
- Q A rod AB slides on V shaped wire with speed vin magnetic field B such that at an instant OA OB 1 If the induced emf in the loop OAB...
- Q Which of the following situations is possible a An object can have acceleration but constant velocity b The velocity of an object may be zero but acceleration is not zero...
- Q A loudspeakersystem uses alternating current to amplify sound of certain frequencies It consists of two speakers in parallel Tweeter which has a smaller diameter produces high frequency sound Woofer which...
- Q A wooden block of mass m resting on a rough horizontal table coefficient of friction u is pulled by a force F as shown in figure The acceleration of the...
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