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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.
| 7551. |
Seema's bag weighs 32 kg. What is its weight in grams? |
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Answer» Seema's bag weighs 32 kg. What is its weight in grams? |
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| 7552. |
Which of the following is the ultimate source of energy? |
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Answer» Which of the following is the ultimate source of energy? |
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| 7553. |
Question 4 (ii) Express in Kg 3470 g |
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Answer» Question 4 (ii) Express in Kg 3470 g |
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| 7554. |
Assertion: When an ammeter is connected in parallel in a given circuit it will burn.Reason: The resistance offered by an ammeter is low. |
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Answer» Assertion: When an ammeter is connected in parallel in a given circuit it will burn. Reason: The resistance offered by an ammeter is low. |
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| 7555. |
Law of conservation of mechanical energy is valid for A) conservative forces B) non conservative forces C) both |
| Answer» Law of conservation of mechanical energy is valid for A) conservative forces B) non conservative forces C) both | |
| 7556. |
what is kinetic energy |
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Answer» what is kinetic energy |
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| 7557. |
A chord is wound around a circumference of a wheel of diameter 0.3m.the axis of wheel is fixed and horizontal.A mass of 0.5kg is attached to the end of chord and is allowed to fall from rest.The weight is observed to fall through1.5 m in 4s.Find moment of inertia of wheel. Taking the moment of release as t=0, the acceleration of a point on the rim of wheel at t=1s has a magnitude nearly equal to |
| Answer» A chord is wound around a circumference of a wheel of diameter 0.3m.the axis of wheel is fixed and horizontal.A mass of 0.5kg is attached to the end of chord and is allowed to fall from rest.The weight is observed to fall through1.5 m in 4s.Find moment of inertia of wheel. Taking the moment of release as t=0, the acceleration of a point on the rim of wheel at t=1s has a magnitude nearly equal to | |
| 7558. |
Let's say a thief is running on a train with 12km/h.The police car is moving with 80km/h. If the speed of the train is 60km/h then what is the speed of thief w.r.t to police car? |
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Answer» Let's say a thief is running on a train with 12km/h.The police car is moving with 80km/h. If the speed of the train is 60km/h then what is the speed of thief w.r.t to police car? |
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| 7559. |
Give the relation between change in momentum of a body and force acting on the body. |
| Answer» Give the relation between change in momentum of a body and force acting on the body. | |
| 7560. |
Pick out the correct relation(s) between universal gravitational constant (G) and acceleration due to gravity (g) M = mass of earth, R = radius of earth. |
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Answer» Pick out the correct relation(s) between universal gravitational constant (G) and acceleration due to gravity (g) |
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| 7561. |
50.Three equal charges Q are placed at corners of an equilateral triangle of side a .A charge q is placed at height a from centroid.find net force on charge q.given that q is placed perpendicular to plane of triangle. |
| Answer» 50.Three equal charges Q are placed at corners of an equilateral triangle of side a .A charge q is placed at height a from centroid.find net force on charge q.given that q is placed perpendicular to plane of triangle. | |
| 7562. |
If the radius of earth shrink by 1.5% then value of gravitational acceleration changes by, mass remain same |
| Answer» If the radius of earth shrink by 1.5% then value of gravitational acceleration changes by, mass remain same | |
| 7563. |
Find the value of x and q0 such that the entire system is in equilibrium |
Answer» Find the value of x and q0 such that the entire system is in equilibrium |
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| 7564. |
what is velocity |
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Answer» what is velocity |
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| 7565. |
Find the opposites of the following words from the text. (i) Minimum speed __________________________ (ii) Moved forward __________________________ (iii) Disappeared __________________________ (iv) Closed __________________________ (v) Lowest __________________________ |
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Answer» Find the opposites of the following words from the text.
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| 7566. |
Fill in the blanks to complete the sentences : (a) Two ends of a magnet are called .......... (b) Unlike poles of a magnet ............. each other. (c) Like poles of a magnet ............ each other. (d) A freely suspended magnet rests in the geographic ............ direction. |
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Answer» Fill in the blanks to complete the sentences : (a) Two ends of a magnet are called .......... (b) Unlike poles of a magnet ............. each other. (c) Like poles of a magnet ............ each other. (d) A freely suspended magnet rests in the geographic ............ direction. |
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| 7567. |
A ball of clay and plastic of same mass are thrown towards a wall with same speed. Which of them will exert more force on wall. Why? |
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Answer» A ball of clay and plastic of same mass are thrown towards a wall with same speed. Which of them will exert more force on wall. Why? |
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| 7568. |
13. In half cell containing [Tl+³] =0.1M , [Tl+¹]=0.01M standard cell potential is -1.25V for reaction Tl+³ -> To+1 +2e then reduction potential of Tl+³/Tl+ couple at 25 degree celcius is |
| Answer» 13. In half cell containing [Tl+³] =0.1M , [Tl+¹]=0.01M standard cell potential is -1.25V for reaction Tl+³ -> To+1 +2e then reduction potential of Tl+³/Tl+ couple at 25 degree celcius is | |
| 7569. |
Calculate the approximate height (h) of Earth's atmosphere extending above the surface of the Earth, assuming the density of air to be uniform [1.3 kg m−3] and pressure at the surface of Earth to be 105 Pa. (Assume the Earth to be perfectly spherical and no variation in 'g' due to height). |
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Answer» Calculate the approximate height (h) of Earth's atmosphere extending above the surface of the Earth, assuming the density of air to be uniform [1.3 kg m−3] and pressure at the surface of Earth to be 105 Pa. (Assume the Earth to be perfectly spherical and no variation in 'g' due to height). |
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| 7570. |
A car weighing 1600 kg moving with a velocity of 30m/s regards uniformly coming to rest in 20s .initial and final momentum of the car |
| Answer» A car weighing 1600 kg moving with a velocity of 30m/s regards uniformly coming to rest in 20s .initial and final momentum of the car | |
| 7571. |
If both the mass and the radius of the earthdecrease by 1%, the value of the accelerationdue to gravity will(1) decrease by 1%(2) increase by 1%(3) increase by 2%(4) remain unchanged |
| Answer» If both the mass and the radius of the earthdecrease by 1%, the value of the accelerationdue to gravity will(1) decrease by 1%(2) increase by 1%(3) increase by 2%(4) remain unchanged | |
| 7572. |
ntA stone is projected from a point on the ground so as to hit a bird on the top of vertical pole of height h and then attain a maximum height 2h above the ground. If at the instant of projection the bird flies away horizontally with a uniform speed and if stone hits the bird while descending the ratio of speed of bird to horizontal speed of the stone is ?n |
| Answer» ntA stone is projected from a point on the ground so as to hit a bird on the top of vertical pole of height h and then attain a maximum height 2h above the ground. If at the instant of projection the bird flies away horizontally with a uniform speed and if stone hits the bird while descending the ratio of speed of bird to horizontal speed of the stone is ?n | |
| 7573. |
Work done by a person on a body doesn't depend on: |
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Answer» Work done by a person on a body doesn't depend on: |
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| 7574. |
Which of the following objects will sink? |
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Answer» Which of the following objects will sink? |
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| 7575. |
How to convert 54km/h into m/s |
| Answer» How to convert 54km/h into m/s | |
| 7576. |
How the gravitational force is produced? |
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Answer» How the gravitational force is produced? |
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| 7577. |
Question 2 (b)What is the range of frequencies associated with(b) Ultrasound? |
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Answer» Question 2 (b) What is the range of frequencies associated with (b) Ultrasound? |
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| 7578. |
29The position of a particle moving along x-axis givenby x = (-2f +3f2 +5)m. The acceleration ofparticle at the instant its velocity becomes zero is(1) 12 m/s2(2)-12 m/s2(3) -6 m/s2(4) Zero |
| Answer» 29The position of a particle moving along x-axis givenby x = (-2f +3f2 +5)m. The acceleration ofparticle at the instant its velocity becomes zero is(1) 12 m/s2(2)-12 m/s2(3) -6 m/s2(4) Zero | |
| 7579. |
A parallel plate capacitor made up of circular plates each of radius R=6.0cm has a capacitance C=100pF.The capacitor is connected to a 230V ac supply with an angular frequency of 300rad/s-1Determine the amplitude of magnetic field vector at a point 3.0cm from the axis between the plates. |
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Answer» A parallel plate capacitor made up of circular plates each of radius R=6.0cm has a capacitance C=100pF.The capacitor is connected to a 230V ac supply with an angular frequency of 300rad/s-1 Determine the amplitude of magnetic field vector at a point 3.0cm from the axis between the plates. |
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| 7580. |
What is the equation of solar constant |
| Answer» What is the equation of solar constant | |
| 7581. |
If aperture of a spherical mirror is increased by 50% find percentage increase in intensity of image |
| Answer» If aperture of a spherical mirror is increased by 50% find percentage increase in intensity of image | |
| 7582. |
The graph given alongside shows how the speed of a car changes with time: (1) What is the initial speed of the car? (2) What is the maximum speed attained by the car? (3) Which part of the graph shows zero acceleration? (4) Which part of the graph shows varying retardation?(5) Find the distance travelled in the first 8 hours. |
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Answer» The graph given alongside shows how the speed of a car changes with time: (1) What is the initial speed of the car?
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| 7583. |
what does this mean - a good source of energy must be economical . And is nuclear energy a good source of energy ? |
| Answer» what does this mean - a good source of energy must be economical . And is nuclear energy a good source of energy ? | |
| 7584. |
a ball is thrown vertically upwards with speed of 10 m/s from the top of a 200 m high tower and another is thrown downward with the same speed simultaneously from the same point find the time difference between them in reaching the ground |
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Answer» a ball is thrown vertically upwards with speed of 10 m/s from the top of a 200 m high tower and another is thrown downward with the same speed simultaneously from the same point find the time difference between them in reaching the ground |
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| 7585. |
A thin square plate of side 4 m is placed horizontally 2 m below the surface of water. Calculate the thrust on one of the surface of the plate. (Given: Atmospheric pressure,Patm=1.013×105N/m2 Density of water, ρw = 1000 kg/m3, Acceleration due to gravity, (g)=9.8 ms−1) |
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Answer» A thin square plate of side 4 m is placed horizontally 2 m below the surface of water. Calculate the thrust on one of the surface of the plate. |
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| 7586. |
A metal ball of mass 2 kg is allowed to fall freely from rest from a height of 5 m above the ground. (a) Taking g=10 m s−2,calculate: (i) the potential energy possessed by the ball when it is initially at rest. (ii) the kinetic energy of the ball just before it hits the ground? (b) What happens to the mechanical energy after the ball hits the ground and comes to rest? |
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Answer» A metal ball of mass 2 kg is allowed to fall freely from rest from a height of 5 m above the ground. (a) Taking g=10 m s−2,calculate: (i) the potential energy possessed by the ball when it is initially at rest. (ii) the kinetic energy of the ball just before it hits the ground? (b) What happens to the mechanical energy after the ball hits the ground and comes to rest? |
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| 7587. |
a smooth wedge is fixed on a elevator making an angle theta with the horizontal moving downward with an acceleration g/3 the acceleration of block place\d on wedge wrt elevator is |
| Answer» a smooth wedge is fixed on a elevator making an angle theta with the horizontal moving downward with an acceleration g/3 the acceleration of block place\d on wedge wrt elevator is | |
| 7588. |
Give the magnitude and direction of force on a drop of water falling with constant speed from sky. |
| Answer» Give the magnitude and direction of force on a drop of water falling with constant speed from sky. | |
| 7589. |
44.An open glass tube is immersed in mercury I such a way that a length of 8cm extends above the mercury level . The open end of the tube is then closed and sealed and the tube is raised vertically up by additional 46cm . What will be length of the air column above mercury in the tube now ( atmospheric pressure is 76 cm of Hg) A) 16cm. B) 22cm C) 38cm D)6cm |
| Answer» 44.An open glass tube is immersed in mercury I such a way that a length of 8cm extends above the mercury level . The open end of the tube is then closed and sealed and the tube is raised vertically up by additional 46cm . What will be length of the air column above mercury in the tube now ( atmospheric pressure is 76 cm of Hg) A) 16cm. B) 22cm C) 38cm D)6cm | |
| 7590. |
Suppose that a box is accelerating at a rate of 2 ms2. If the net force is tripled and the mass is doubled, then what is the new acceleration of the box? (in ms2)___ |
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Answer» Suppose that a box is accelerating at a rate of 2 ms2. If the net force is tripled and the mass is doubled, then what is the new acceleration of the box? (in ms2) |
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| 7591. |
why electron addition is exothermic? |
| Answer» why electron addition is exothermic? | |
| 7592. |
Time is a __ quantity? |
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Answer» Time is a |
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| 7593. |
A light spring of length 20 cm and force cons†an t 2 N/cm is placed vertically on a table. A small block of mass 1 kg falls on it. The length h from the surface of the table at which the block will have maximum velocity is :_______________ |
| Answer» A light spring of length 20 cm and force cons†an t 2 N/cm is placed vertically on a table. A small block of mass 1 kg falls on it. The length h from the surface of the table at which the block will have maximum velocity is :_______________ | |
| 7594. |
Differentiate between density and relative density of a substance. |
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Answer» Differentiate between density and relative density of a substance. |
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| 7595. |
Using a spreadsheet, draw graphs between distance and time, using the information about the movements of Amar, Akbar and Anthony given in the table on page 4 , in the lesson on Laws of Motion. What precautions will you take while drawing the graph? |
| Answer» Using a spreadsheet, draw graphs between distance and time, using the information about the movements of Amar, Akbar and Anthony given in the table on page 4 , in the lesson on Laws of Motion. What precautions will you take while drawing the graph? | |
| 7596. |
a stone is projected with a velocity of 30\surd2 m/s at an angle of 45^°.The average horizontal velocity of stone during its motion from starting point to its maximum height is |
| Answer» a stone is projected with a velocity of 30\surd2 m/s at an angle of 45^°.The average horizontal velocity of stone during its motion from starting point to its maximum height is | |
| 7597. |
Question 19Fig. shows a man with a parachute. Name the force which is responsible for his downward motion. Will he come down with the same speed without the parachute? |
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Answer» Question 19 |
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| 7598. |
What is difference between equivalent weight and molecular mass |
| Answer» What is difference between equivalent weight and molecular mass | |
| 7599. |
A horse of mass 100 kg moves in horizontal direction with a man of weight 750 N on his back. Find the work done by the horse on the man. |
| Answer» A horse of mass 100 kg moves in horizontal direction with a man of weight 750 N on his back. Find the work done by the horse on the man. | |
| 7600. |
a particle moves along a straight line such that its displacement at any time t is given by S=t^3+6t^2+3t+4 meters. the velocity when the accelaration is zero is:- |
| Answer» a particle moves along a straight line such that its displacement at any time t is given by S=t^3+6t^2+3t+4 meters. the velocity when the accelaration is zero is:- | |
