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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 7701. |
What is the graph of the uniform rectilinear motion. |
| Answer» What is the graph of the uniform rectilinear motion. | |
| 7702. |
Mption of charged particle inagnetic field and fin relations between v,r,t,,and r at a given tine |
| Answer» Mption of charged particle inagnetic field and fin relations between v,r,t,,and r at a given tine | |
| 7703. |
Can two magnetic field lines intersect each other ? Give reason to your answer. |
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Answer» Can two magnetic field lines intersect each other ? Give reason to your answer. |
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| 7704. |
what is newtons first law of mot |
| Answer» what is newtons first law of mot | |
| 7705. |
If a sound wave has a pressure amplitude Po , speed v in a medium of density p , then the intensity of sound is equal to |
| Answer» If a sound wave has a pressure amplitude Po , speed v in a medium of density p , then the intensity of sound is equal to | |
| 7706. |
In Fig. 3.17, a block of weight 15 N is hanging from a rigid support by a string. What force is exerted by (a) block on the string, (b) string on the block? Name them and show them in the diagram. |
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Answer» In Fig. 3.17, a block of weight 15 N is hanging from a rigid support by a string. What force is exerted by (a) block on the string, |
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| 7707. |
Why does an object float or sink when placed on the surface of water? [2 MARKS] |
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Answer» Why does an object float or sink when placed on the surface of water? |
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| 7708. |
141 How the direction of magnetic field lines be identified by drawing tangent to them? |
| Answer» 141 How the direction of magnetic field lines be identified by drawing tangent to them? | |
| 7709. |
(a) Define the term 'work'. Write the formula for the work done on a body when a force acts on the body in the direction of its displacement. Give the meaning of each symbol which occurs in the formula. (b) A person of mass 50 kg climbs a tower of height 72 metres. Calculate the work doen. (5 = 9.8 m s−2) |
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Answer» (a) Define the term 'work'. Write the formula for the work done on a body when a force acts on the body in the direction of its displacement. Give the meaning of each symbol which occurs in the formula. (b) A person of mass 50 kg climbs a tower of height 72 metres. Calculate the work doen. (5 = 9.8 m s−2) |
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| 7710. |
A boy was playing with a sponge ball, compressing and releasing it. The work done by the boy on the ball and the ball on the boy respectively at the time of compressing is |
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Answer» A boy was playing with a sponge ball, compressing and releasing it. The work done by the boy on the ball and the ball on the boy respectively at the time of compressing is |
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| 7711. |
Two balls A\:and B of masses 2m and 4m are in motion with velocities 2v and 4v respectively.What is the force needed to stop them in the same time? |
| Answer» Two balls A\:and B of masses 2m and 4m are in motion with velocities 2v and 4v respectively.What is the force needed to stop them in the same time? | |
| 7712. |
Question 16During the construction of a building, the lightning conductor was left hanging in the air by mistake. Would the lightning conductor be still effective? Explain. |
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Answer» Question 16 During the construction of a building, the lightning conductor was left hanging in the air by mistake. Would the lightning conductor be still effective? Explain. |
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| 7713. |
Two balls A and B are thrown simultaneously ,A vertically upwards with a speed of 20ms from the ground ,and B vertically downwards from a height of 40m with the same speed and along the same line of moti on at what point do the balls collide?g=9.8ms2 |
| Answer» Two balls A and B are thrown simultaneously ,A vertically upwards with a speed of 20ms from the ground ,and B vertically downwards from a height of 40m with the same speed and along the same line of moti on at what point do the balls collide?g=9.8ms2 | |
| 7714. |
a block of mass m is revolving under the action of contact forces amd gravity on a smooth horizontal plane with cons†an t speed v . if radius of the circular path is R then the net contact force on the block is ? |
| Answer» a block of mass m is revolving under the action of contact forces amd gravity on a smooth horizontal plane with cons†an t speed v . if radius of the circular path is R then the net contact force on the block is ? | |
| 7715. |
A uniform rod of mass M and length ℓ is placed on a smooth horizontal surface with its one end pivoted to the surface. A small ball of mass m moving along the surface with a velocity v0, perpendicular to the rod, collides elastically with the free end of the rod. Find the impulse applied by the pivot on the rod during collision. (Take M/m = 2) |
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Answer» A uniform rod of mass M and length ℓ is placed on a smooth horizontal surface with its one end pivoted to the surface. A small ball of mass m moving along the surface with a velocity v0, perpendicular to the rod, collides elastically with the free end of the rod. Find the impulse applied by the pivot on the rod during collision. (Take M/m = 2)
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| 7716. |
In demodulation, when the incoming wave goes through the diode only the high frequency wave passes on. But how low frequency wave we will get in output as diode passes only high one? |
| Answer» In demodulation, when the incoming wave goes through the diode only the high frequency wave passes on. But how low frequency wave we will get in output as diode passes only high one? | |
| 7717. |
How does Heat Energy help Particles overcome forces of attraction? |
| Answer» How does Heat Energy help Particles overcome forces of attraction? | |
| 7718. |
37. Sun and earth revolve around a common mass with common period of revolution T.If Ms and Me be masses of Sun and Earth and a be distance of separation,prove that: Ms+Me=(42÷ G)(a3÷ T2) |
| Answer» 37. Sun and earth revolve around a common mass with common period of revolution T.If Ms and Me be masses of Sun and Earth and a be distance of separation,prove that: Ms+Me=(42÷ G)(a3÷ T2) | |
| 7719. |
Question 2Why are sound waves called mechanical waves? |
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Answer» Question 2 Why are sound waves called mechanical waves? |
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| 7720. |
Why was it necessary to keep Harold's father's profession a secret from him? |
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Answer» Why was it necessary to keep Harold's father's profession a secret from him? |
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| 7721. |
Question 18A ball thrown up vertically returns to the thrower after 6 s. Find(a) the velocity with which it was thrown up,(b) the maximum height it reaches, and(c) its position after 4 s |
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Answer» Question 18 A ball thrown up vertically returns to the thrower after 6 s. Find (a) the velocity with which it was thrown up, (b) the maximum height it reaches, and (c) its position after 4 s |
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| 7722. |
What would be the relation between magnitude of velocity of the gun and bullet after firing, if the mass of gun is less than the mass of bullet? Assume no external force is acting on the gun bullet system. |
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Answer» What would be the relation between magnitude of velocity of the gun and bullet after firing, if the mass of gun is less than the mass of bullet? Assume no external force is acting on the gun bullet system. |
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| 7723. |
comercialy avilable of h2so4 15%by mass density equal to 1.10 g/ml calculate m,M,N |
| Answer» comercialy avilable of h2so4 15%by mass density equal to 1.10 g/ml calculate m,M,N | |
| 7724. |
A person is traveling on a straight road with a uniform velocity v1 for some time and with uniform velocity v2 for next equal time. The average velocity for the entire trip is |
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Answer» A person is traveling on a straight road with a uniform velocity v1 for some time and with uniform velocity v2 for next equal time. The average velocity for the entire trip is |
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| 7725. |
Two point charges –Q and +Q√3 are placed in the xy-plane at the origin (0,0) and a point (2,0), respectively, as shown in the figure. This results in an equipotential circle of radius R and potential V=0 in the xy-plane with its center at (b,0). All lengths are measured in meters.The value of R in meter is |
Answer» Two point charges –Q and +Q√3 are placed in the xy-plane at the origin (0,0) and a point (2,0), respectively, as shown in the figure. This results in an equipotential circle of radius R and potential V=0 in the xy-plane with its center at (b,0). All lengths are measured in meters. The value of R in meter is |
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| 7726. |
(क) कक्षा 2 की रिमझिम में अखबार में छपा एक समाचार दिया गया है। साथ में उस समाचार के आधार पर लिखी एक कहानी भी दी गई है। उसे एक बार फिर से पढ़ो।(ख) अब 'बाघ आया उस रात' कविता के आधार पर एक 'समाचार' लिखो।(ग) तेंदुए और बाघ में क्या अंतर है? पता करो। इस काम के लिए तुम बड़ों से बातचीत भी कर सकते हो। |
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Answer» (क) कक्षा 2 की रिमझिम में अखबार में छपा एक समाचार दिया गया है। साथ में उस समाचार के आधार पर लिखी एक कहानी भी दी गई है। उसे एक बार फिर से पढ़ो। (ख) अब 'बाघ आया उस रात' कविता के आधार पर एक 'समाचार' लिखो। (ग) तेंदुए और बाघ में क्या अंतर है? पता करो। इस काम के लिए तुम बड़ों से बातचीत भी कर सकते हो। |
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| 7727. |
The velocity of an object changes from v1=10i+4j+2k to v2=4i+2j+3k in 5 second find the magnitude of average acceleration |
| Answer» The velocity of an object changes from v1=10i+4j+2k to v2=4i+2j+3k in 5 second find the magnitude of average acceleration | |
| 7728. |
144 a long cylindrical glass vessel has a small hole of radius R at its bottom. the depth to which the vessel can be lowered vertically in a deep water (surface tension T) without any water entering inside is |
| Answer» 144 a long cylindrical glass vessel has a small hole of radius R at its bottom. the depth to which the vessel can be lowered vertically in a deep water (surface tension T) without any water entering inside is | |
| 7729. |
Read the followingSilenceBirds sing.Phones ring.People talk.Dogs bark.Cows moo.Cocks crow.Bees buzz.Children hush!Match the phrases with the picture.A bird singingA cow mooingA phone ringingA dog barkingA cock crowing |
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Answer» Read the following Silence Birds sing. Phones ring. People talk. Dogs bark. Cows moo. Cocks crow. Bees buzz. Children hush! Match the phrases with the picture. |
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| 7730. |
A girl is wearing a pair of flat shoes. She weighs 550 N. The area of contact of one shoe with the ground is 160 cm2. What pressure will be exerted by the girl on the ground if she stands on two feet? |
| Answer» A girl is wearing a pair of flat shoes. She weighs 550 N. The area of contact of one shoe with the ground is 160 cm2. What pressure will be exerted by the girl on the ground if she stands on two feet? | |
| 7731. |
The position of a body moving along x-axis at time t is given by x=(t"2-4t+6) m.the distance travelled by body in time interval t=0 to t=3s is |
| Answer» The position of a body moving along x-axis at time t is given by x=(t"2-4t+6) m.the distance travelled by body in time interval t=0 to t=3s is | |
| 7732. |
A body of mass 25 g has a momentum of 0.4 kg-m/s. Find its kinetic energy. |
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Answer» A body of mass 25 g has a momentum of 0.4 kg-m/s. Find its kinetic energy. |
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| 7733. |
Explain the relation between g and G |
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Answer» Explain the relation between g and G |
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| 7734. |
2 stones are thrown simultaneously from a point on the ground both with speed v0 one vertically upwards other at an inclination alpha with the ground what is separation between them as a function of time |
| Answer» 2 stones are thrown simultaneously from a point on the ground both with speed v0 one vertically upwards other at an inclination alpha with the ground what is separation between them as a function of time | |
| 7735. |
ntA straight magnetic wire of magnetic moment M is folded to form an arc that subtends an angle of 60^° at the centre of curvature .The new value of magnetic moment is A 2M/pi B 3M/pi C M/pi D M/3pin |
| Answer» ntA straight magnetic wire of magnetic moment M is folded to form an arc that subtends an angle of 60^° at the centre of curvature .The new value of magnetic moment is A 2M/pi B 3M/pi C M/pi D M/3pin | |
| 7736. |
What does the area below v–t graph give? |
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Answer» What does the area below v–t graph give? |
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| 7737. |
A body weighs W gf in air and W1 gf when it is completely immersed in water. Find the relative density of material of the body? |
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Answer» A body weighs W gf in air and W1 gf when it is completely immersed in water. Find the relative density of material of the body? |
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| 7738. |
In a circular callipers value of 1MSD is 1' and 30th vernier division coincide with 29th MSD. Calculate least count? |
| Answer» In a circular callipers value of 1MSD is 1' and 30th vernier division coincide with 29th MSD. Calculate least count? | |
| 7739. |
The pressure exerted by a force of 50 N normal to the nail of area 1mm2 is |
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Answer» The pressure exerted by a force of 50 N normal to the nail of area 1mm2 is |
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| 7740. |
On bombardment of a neutron with Boron, α -particle is emitted and product nuclei formed is: |
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Answer» On bombardment of a neutron with Boron, α -particle is emitted and product nuclei formed is: |
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| 7741. |
A particle is projected vertically upward with velocit from the top of tower of height H. Its velocity a depth h below the point of projection is thrice of velocity at a height h above the point of projectic The time at which it hit the ground is |
| Answer» A particle is projected vertically upward with velocit from the top of tower of height H. Its velocity a depth h below the point of projection is thrice of velocity at a height h above the point of projectic The time at which it hit the ground is | |
| 7742. |
A brick stone of mass 5 kg is at a height above the ground. If the potential energy of the stone is 100 J. Find the height of the stone with respect to the ground (in metre). (Take g=10 ms−2)2 |
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Answer» A brick stone of mass 5 kg is at a height above the ground. If the potential energy of the stone is 100 J. Find the height of the stone with respect to the ground (in metre). (Take g=10 ms−2)
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| 7743. |
Question 9When is the force experienced by a current-carrying conductor placed in a magnetic field largest? |
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Answer» Question 9 When is the force experienced by a current-carrying conductor placed in a magnetic field largest? |
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| 7744. |
A horizontal straight inductor of length l placed along east-west direction falls under gravity from height h at a place where horizontal component is H and vertcal component is V. Then, 1)An emf induced along the length which has maximum value H/\sqrt{2gh} 2) An emf induced along the lengt which has maximum value V/\sqrt{2gh} |
| Answer» A horizontal straight inductor of length l placed along east-west direction falls under gravity from height h at a place where horizontal component is H and vertcal component is V. Then, 1)An emf induced along the length which has maximum value H/\sqrt{2gh} 2) An emf induced along the lengt which has maximum value V/\sqrt{2gh} | |
| 7745. |
Figure shows a flywheel of radius 10 cm. It's moment of inertia about the rotation Axis is 0.4 kg m2. A massless string passes over the flywheel and a mass 2 kg is attached at its lower end. Angular acceleration of the flywheel in rad/s2 is nearly |
| Answer» Figure shows a flywheel of radius 10 cm. It's moment of inertia about the rotation Axis is 0.4 kg m2. A massless string passes over the flywheel and a mass 2 kg is attached at its lower end. Angular acceleration of the flywheel in rad/s2 is nearly | |
| 7746. |
if the angle of contact is less than 90degree the pressure just inside the surface of a meniscus(a)is less than atmospheric pressure(b)more than atm. pressure(c)same as atm.pressure(d)none of the above |
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Answer» if the angle of contact is less than 90degree the pressure just inside the surface of a meniscus (a)is less than atmospheric pressure (b)more than atm. pressure (c)same as atm.pressure (d)none of the above |
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| 7747. |
How many light waves are there in a length of 4 micron if the wave length is 5 femto meter? |
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Answer» How many light waves are there in a length of 4 micron if the wave length is 5 femto meter? |
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| 7748. |
A particle of mass 2 kg is on a smooth horizontal table and moves in a circular path of radius 0.6m. The height of the table from the ground is 0.8m. If the angular speedof particle is 12 rad per sec. the ang. momentum about a point on the ground right under the centre of the circle i |
| Answer» A particle of mass 2 kg is on a smooth horizontal table and moves in a circular path of radius 0.6m. The height of the table from the ground is 0.8m. If the angular speedof particle is 12 rad per sec. the ang. momentum about a point on the ground right under the centre of the circle i | |
| 7749. |
Write the appropriate term in the blanks .(a) The alloys called.......... and .............. are used for making industrial magnets.(b) A magnetic field can pass through ............ and ............... .(c) The intensity of a magnetic field is indicated by the lines of ................ .(d) The real test of a magnet is .............. . |
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Answer» Write the appropriate term in the blanks . (a) The alloys called.......... and .............. are used for making industrial magnets. (b) A magnetic field can pass through ............ and ............... . (c) The intensity of a magnetic field is indicated by the lines of ................ . (d) The real test of a magnet is .............. . |
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| 7750. |
Hair of shaving brush clings together when it is taken out of the water due to |
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Answer» Hair of shaving brush clings together when it is taken out of the water due to |
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