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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.
| 7451. |
Apart from global warming the other implications due to crop burning? |
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Answer» Apart from global warming the other implications due to crop burning? |
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| 7452. |
In a thermodynamic power plant water falls from a height H. if specific heat of water is S and half of gravitational potential energy is utilised heating the water, then rise in temperature of water is |
| Answer» In a thermodynamic power plant water falls from a height H. if specific heat of water is S and half of gravitational potential energy is utilised heating the water, then rise in temperature of water is | |
| 7453. |
What is weight of a block of mass 5 kg at the centre of Earth? (take g=10 m/s2) |
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Answer» What is weight of a block of mass 5 kg at the centre of Earth? (take g=10 m/s2) |
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| 7454. |
An object O is moving with velocity (^i+2^j+3^k) m/s and a plane mirror facing the object is lying in (y−z) plane. If the mirror is moving with velocity 2^i m/s, the velocity of image w.r.t object (in SI units) is : |
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Answer» An object O is moving with velocity (^i+2^j+3^k) m/s and a plane mirror facing the object is lying in (y−z) plane. If the mirror is moving with velocity 2^i m/s, the velocity of image w.r.t object (in SI units) is : |
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| 7455. |
Find the electric field due to an infinitely large uniformly charged non-conducting thick sheet, at a point P inside the sheet as shown in figure. |
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Answer» Find the electric field due to an infinitely large uniformly charged non-conducting thick sheet, at a point P inside the sheet as shown in figure. |
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| 7456. |
A gun of mass 3 kg fires a bullet of mass 30 g. The bullet takes 0.003 s to move through the barrel of the gun and acquires a velocity of 100 m/s. Calculate:(a) the velocity with which the gun recoils.(b) the force exerted on gunman due to recoil of the gun |
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Answer» A gun of mass 3 kg fires a bullet of mass 30 g. The bullet takes 0.003 s to move through the barrel of the gun and acquires a velocity of 100 m/s. Calculate: (a) the velocity with which the gun recoils. (b) the force exerted on gunman due to recoil of the gun |
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| 7457. |
8000kg engine pulls a train of 5 wagons each of 2000 kg along a horizontal track. If engine exerts a force of 40000N and track offers friction of 5000N then calculate 1). Net accelerating force 2). Acceleration of train 3). Force of wagon 1 on wagon 2 |
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Answer» 8000kg engine pulls a train of 5 wagons each of 2000 kg along a horizontal track. If engine exerts a force of 40000N and track offers friction of 5000N then calculate 1). Net accelerating force 2). Acceleration of train 3). Force of wagon 1 on wagon 2 |
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| 7458. |
The amount of inertia that an object possesses is: |
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Answer» The amount of inertia that an object possesses is: |
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| 7459. |
धर्म ने धन को पैरों तले कुचल डाला। |
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Answer» धर्म ने धन को पैरों तले कुचल डाला। |
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| 7460. |
2. The graph of acceleration - time of a particle moving in straight path makes angle 45^° with time axis.It start from rest. Then distance travelled by it in first 6 sec is(1) 36 m(2) 216 m(3) 18 m(4) 72 m |
| Answer» 2. The graph of acceleration - time of a particle moving in straight path makes angle 45^° with time axis.It start from rest. Then distance travelled by it in first 6 sec is(1) 36 m(2) 216 m(3) 18 m(4) 72 m | |
| 7461. |
25. From a point source a light falls on a spherical glasssurface (μ 1.5 and radius of curvature- 10 cm).The distance between point source and glass surface is50 cm. The position of image is(a) 25 cmm(c) 100 cm(b) 50 cnm(d) 150 cm |
| Answer» 25. From a point source a light falls on a spherical glasssurface (μ 1.5 and radius of curvature- 10 cm).The distance between point source and glass surface is50 cm. The position of image is(a) 25 cmm(c) 100 cm(b) 50 cnm(d) 150 cm | |
| 7462. |
A wire 1 m long has a resistances of 1Ω. If it is uniformly stretched so that its length increases by 25%, then what is its increase in resistance? |
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Answer» A wire 1 m long has a resistances of 1Ω. If it is uniformly stretched so that its length increases by 25%, then what is its increase in resistance? |
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| 7463. |
What is Eudiometry? |
| Answer» What is Eudiometry? | |
| 7464. |
How much work is done on a body whirling on a circular path of radius 5 m |
| Answer» How much work is done on a body whirling on a circular path of radius 5 m | |
| 7465. |
An express train going towards Delhi is travelling at a speed of 90 kmph. Brakes are applied so as to produce a uniform acceleration of –0.5m s−2 . Find how far the train will go before it is brought to rest. |
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Answer» An express train going towards Delhi is travelling at a speed of 90 kmph. Brakes are applied so as to produce a uniform acceleration of –0.5m s−2 . Find how far the train will go before it is brought to rest. |
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| 7466. |
It is said that if Force acting on an object is zero, so is the acceleration. But, what if Force acting on a body is constant for a time interval? In such a case is acceleration = 0, too? |
| Answer» It is said that if Force acting on an object is zero, so is the acceleration. But, what if Force acting on a body is constant for a time interval? In such a case is acceleration = 0, too? | |
| 7467. |
What is the formula of longitudinal magnification with respect to linear magnification? |
| Answer» What is the formula of longitudinal magnification with respect to linear magnification? | |
| 7468. |
6.If the intensity of sound is increased by a factor of 30, by how many decibels is the sound level increased? 1)12 2)14.77 3)10 4)13 |
| Answer» 6.If the intensity of sound is increased by a factor of 30, by how many decibels is the sound level increased? 1)12 2)14.77 3)10 4)13 | |
| 7469. |
49. A monkey moves upwards with acc. g/2 w.r.t. rope then find the acc. Of block if mass of monkey and block is same I.,e., M |
| Answer» 49. A monkey moves upwards with acc. g/2 w.r.t. rope then find the acc. Of block if mass of monkey and block is same I.,e., M | |
| 7470. |
Why do clouds appear white while sky appears blue? |
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Answer» Why do clouds appear white while sky appears blue? |
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| 7471. |
A mass m1 has a velocity of u and mass m2 has a velocity of v. Then find the individual momentum of mass m1 and mass m2 respectively. |
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Answer» A mass m1 has a velocity of u and mass m2 has a velocity of v. Then find the individual momentum of mass m1 and mass m2 respectively. |
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| 7472. |
An object is gradually moving away from the focal point of a concave mirror along the axis of the mirror. The graphical representation of the magnitude of linear magnification (m) versus distance of the object from the mirror (x) is correctly given by(Graphs are drawn schematically and are not to scale) |
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Answer» An object is gradually moving away from the focal point of a concave mirror along the axis of the mirror. The graphical representation of the magnitude of linear magnification (m) versus distance of the object from the mirror (x) is correctly given by |
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| 7473. |
Use the mirror equation to deduce that an object placed between f and 2f of a concave mirror produces a real image beyond 2f. [3 MARKS] |
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Answer» Use the mirror equation to deduce that an object placed between f and 2f of a concave mirror produces a real image beyond 2f. [3 MARKS] |
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| 7474. |
negative electron gain enthalpy and electron gain enthalpy order ofha\log ens |
| Answer» negative electron gain enthalpy and electron gain enthalpy order ofha\log ens | |
| 7475. |
body oscillates with SHM according to theequation x (5.0 m) cos \lbrack(2Tt rad s-1)t + /4\rbrack At t1.5 s, its acceleration is(1) 139.56 m/s (2) 139.56 m/s?(3) 69.78 m/s?(4) 69.78 m/s2 |
| Answer» body oscillates with SHM according to theequation x (5.0 m) cos \lbrack(2Tt rad s-1)t + /4\rbrack At t1.5 s, its acceleration is(1) 139.56 m/s (2) 139.56 m/s?(3) 69.78 m/s?(4) 69.78 m/s2 | |
| 7476. |
100. A particle is moving in a circle of radius 1m . Show the 30degree north east position of particle from centre |
| Answer» 100. A particle is moving in a circle of radius 1m . Show the 30degree north east position of particle from centre | |
| 7477. |
Describe the types of inertia with example. Explain in detail. |
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Answer» Describe the types of inertia with example. Explain in detail. |
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| 7478. |
For the circuit shown in the figure, the total energy stored in the capacitors is |
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Answer» For the circuit shown in the figure, the total energy stored in the capacitors is |
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| 7479. |
Question 2When the free ends of a tester are dipped into a solution, the magnetic needle shows deflection. Can you explain the reason? |
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Answer» Question 2 |
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| 7480. |
An object is placed 20 cm in front of the plane mirror. The mirror is moved 2 cm towards the object. The distance between the positions of the original and final images seen in the mirror is: |
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Answer» An object is placed 20 cm in front of the plane mirror. The mirror is moved 2 cm towards the object. The distance between the positions of the original and final images seen in the mirror is: |
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| 7481. |
Select the correct statements that are proposed by Neils Bohr regarding the model of an atom. |
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Answer» Select the correct statements that are proposed by Neils Bohr regarding the model of an atom. |
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| 7482. |
Why dimensional analysis can not be done for more than dependent quantity. |
| Answer» Why dimensional analysis can not be done for more than dependent quantity. | |
| 7483. |
A double star consists of two stars having masses m and 2m separated by a distance r. Which of the following statement is correct? |
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Answer» A double star consists of two stars having masses m and 2m separated by a distance r. Which of the following statement is correct? |
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| 7484. |
Considering the motion of the object whose velocity-time graph is given in the diagram, calculate the total displacement till 16 seconds? |
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Answer» Considering the motion of the object whose velocity-time graph is given in the diagram, calculate the total displacement till 16 seconds?
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| 7485. |
A ball falls to the ground as shown below : (a) What is the kinetic energy of ball when it hits the ground ? (b) What is the potential energy of ball at B ? (c) Which law you have made use of in answering this question ? |
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Answer» A ball falls to the ground as shown below :
(a) What is the kinetic energy of ball when it hits the ground ? (b) What is the potential energy of ball at B ? (c) Which law you have made use of in answering this question ? |
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| 7486. |
An object of mass 1 kg was moving at a speed of 10 m/s. A constant force acts on the object for 4s and the object moved with a speed of 2 m/s in opposite direction. The force acting on the object was ___ . |
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Answer» An object of mass 1 kg was moving at a speed of 10 m/s. A constant force acts on the object for 4s and the object moved with a speed of 2 m/s in opposite direction. The force acting on the object was |
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| 7487. |
The heights of mercury surface in the two arms of the manometer shown in figure are h2 and h1, where (h1>h2) and atmospheric pressure is equal to Pa. Pressure of the gas in the cylinder is equal to, |
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Answer» The heights of mercury surface in the two arms of the manometer shown in figure are h2 and h1, where (h1>h2) and atmospheric pressure is equal to Pa. Pressure of the gas in the cylinder is equal to, |
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| 7488. |
Name the two types of waves which can be generated in a long flexible spring (or slinky). |
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Answer» Name the two types of waves which can be generated in a long flexible spring (or slinky). |
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| 7489. |
Two open organ pipes of lengths 50 cm and 50.6 cm produces 4 beats per second. The speed of sound in air is about (in m/s) – |
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Answer» Two open organ pipes of lengths 50 cm and 50.6 cm produces 4 beats per second. The speed of sound in air is about (in m/s) – |
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| 7490. |
what is the principle behind the recoiling of gun |
| Answer» what is the principle behind the recoiling of gun | |
| 7491. |
A car moving with velocity 54 km/h travelling on a straight road on applying brakes stops after covering 20 m. Find acceleration of the car |
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Answer» A car moving with velocity 54 km/h travelling on a straight road on applying brakes stops after covering 20 m. Find acceleration of the car |
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| 7492. |
A particle slides along a track with elevated and a flat Central part as shown in the figure. The flat part has length L=3m. The curved portion of the track are frictionless. For the flat part, the coefficient of the kinetic friction is equal to 0.2 .The particle is released at point A which is at height H is equal to 1.5 m above the flat part of the track. Where does the particle finally comes to rest? |
| Answer» A particle slides along a track with elevated and a flat Central part as shown in the figure. The flat part has length L=3m. The curved portion of the track are frictionless. For the flat part, the coefficient of the kinetic friction is equal to 0.2 .The particle is released at point A which is at height H is equal to 1.5 m above the flat part of the track. Where does the particle finally comes to rest? | |
| 7493. |
2Four identical thin lenses arę kept one besidethe other on the same optical axis as shown inthe figure. The right surface of rightmost lens issilvered. Focal length of each lens is 20 cm andradius of the silvered surface is 20 cm. The focallength of the combined system is |
| Answer» 2Four identical thin lenses arę kept one besidethe other on the same optical axis as shown inthe figure. The right surface of rightmost lens issilvered. Focal length of each lens is 20 cm andradius of the silvered surface is 20 cm. The focallength of the combined system is | |
| 7494. |
41.The speed of sound in air at 15 C is 340 m/s.what are the speeds at 0 C and 30 C ? |
| Answer» 41.The speed of sound in air at 15 C is 340 m/s.what are the speeds at 0 C and 30 C ? | |
| 7495. |
Two cars A and B are moving west to east and south to north respectively along crossroads. A moves with a speed of 72 kmh−1 and is 500 m away from point of intersection of crossroads and B moves with a speed of 54 kmh−1 and is 400 m away from point of intersection of crossroads. Find the shortest distance between them in metres? |
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Answer» Two cars A and B are moving west to east and south to north respectively along crossroads. A moves with a speed of 72 kmh−1 and is 500 m away from point of intersection of crossroads and B moves with a speed of 54 kmh−1 and is 400 m away from point of intersection of crossroads. Find the shortest distance between them in metres? |
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| 7496. |
A block of mass m is kept on weighing machine in an elevator. If elevator is retarding upward by a m/s, the reading of weighing machine is? |
| Answer» A block of mass m is kept on weighing machine in an elevator. If elevator is retarding upward by a m/s, the reading of weighing machine is? | |
| 7497. |
If we plot the following data, what kind of graph do we get? Distance covered (in km)80100120140Time taken (in h)46810 |
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Answer» If we plot the following data, what kind of graph do we get?
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| 7498. |
In a Quincke's tube experiment, the sound detected is changed from a maximum to minimum when sliding tube is moved through a distance 2 cm. Find the frequency of sound emitted by the source, if the speed of sound in air is 340 m/s. |
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Answer» In a Quincke's tube experiment, the sound detected is changed from a maximum to minimum when sliding tube is moved through a distance 2 cm. Find the frequency of sound emitted by the source, if the speed of sound in air is 340 m/s. |
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| 7499. |
A body of mass 70 kg, when completely immersed in water, displaces 20,000 cm3 of water. Find : (i) the weight of body in water and (ii) the relative density of material of body. |
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Answer» A body of mass 70 kg, when completely immersed in water, displaces 20,000 cm3 of water. Find : (i) the weight of body in water and (ii) the relative density of material of body. |
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| 7500. |
explain all the properties of gravitaional force |
| Answer» explain all the properties of gravitaional force | |
