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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.
| 1951. |
Emorsickness of a pencil measured by using a screw25(least count.001 cm) comes out to be 0.802 cm.gauge(The percentage error in the measurement is(1) 0.125%(3) 4.12%(2)(4)2.43%2.14% |
| Answer» Emorsickness of a pencil measured by using a screw25(least count.001 cm) comes out to be 0.802 cm.gauge(The percentage error in the measurement is(1) 0.125%(3) 4.12%(2)(4)2.43%2.14% | |
| 1952. |
A submarine can either sink or float even though the upthrust acting on it is the same. What is the relationship between the weight of the submarine and the upthrust when the submarine sinks in water? |
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Answer» A submarine can either sink or float even though the upthrust acting on it is the same. What is the relationship between the weight of the submarine and the upthrust when the submarine sinks in water?
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| 1953. |
A car moves with a speed of 6 m/s for 10 seconds. What is the distance covered by the car? |
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Answer» A car moves with a speed of 6 m/s for 10 seconds. What is the distance covered by the car? |
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| 1954. |
a car is moving at a speed of 20 m/s on a circular track of radius 100 m. this speed is increasing at a rate of 3 m/s^2 the acceleration of car is |
| Answer» a car is moving at a speed of 20 m/s on a circular track of radius 100 m. this speed is increasing at a rate of 3 m/s^2 the acceleration of car is | |
| 1955. |
Itwas a wave with steep, very slowly falling crests. Never in mylife had Iseen such anenormous wave. It seemed to be touching the sky.Thereforegigantic means ____________________________. |
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Answer»
It
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| 1956. |
Two balls are projected simultaneously with same speed from top of a tower, one vertically upward andthe other downward. If they reach the ground in 9 s and 4 s respectivelly, then find the height of tower. |
| Answer» Two balls are projected simultaneously with same speed from top of a tower, one vertically upward andthe other downward. If they reach the ground in 9 s and 4 s respectivelly, then find the height of tower. | |
| 1957. |
A man can swim with speed u with respect to river. The width of river is d. The speed of the river is zero at the banks and increases linearly to v0 till mid stream of the river, then decreases to zero at the other bank. When man crosses the river in shortest time, drift is equal to :(given u>v0) |
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Answer» A man can swim with speed u with respect to river. The width of river is d. The speed of the river is zero at the banks and increases linearly to v0 till mid stream of the river, then decreases to zero at the other bank. When man crosses the river in shortest time, drift is equal to : |
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| 1958. |
A magnet is pointing towards geographical north at a place where horizintal component of earths magnetic field is 40microT .magnetic dipole moment of bar magnet is 60Am2 and torque acting on the magnet is 1.2*10 power -3.what is declination at this place ?? |
| Answer» A magnet is pointing towards geographical north at a place where horizintal component of earths magnetic field is 40microT .magnetic dipole moment of bar magnet is 60Am2 and torque acting on the magnet is 1.2*10 power -3.what is declination at this place ?? | |
| 1959. |
Determine moment of inertia in case of a ring about an axis touching its outer edge lying in its plane |
| Answer» Determine moment of inertia in case of a ring about an axis touching its outer edge lying in its plane | |
| 1960. |
5. A block of mass m 1kg, moving on a horizontal surface with speed u-2m/s enters a rough patch ranging fromto x-2.01m. The retarding force F on the block in this range is inversely proportional to x over thisx-0.10mrange.F = -K/x;0.1 x |
| Answer» 5. A block of mass m 1kg, moving on a horizontal surface with speed u-2m/s enters a rough patch ranging fromto x-2.01m. The retarding force F on the block in this range is inversely proportional to x over thisx-0.10mrange.F = -K/x;0.1 x<2,01m-0 for x<0.1m and x>2.01mWhere K0.5J.What is the final kinetic energy and speed of v of the block as it crosses this patch | |
| 1961. |
In the following reaction , state whether work is done on the system or by the system: H_2O(s)→ H_2O(l |
| Answer» In the following reaction , state whether work is done on the system or by the system: H_2O(s)→ H_2O(l | |
| 1962. |
52. The value of s=+-1/2 do not affect the designation of orbital |
| Answer» 52. The value of s=+-1/2 do not affect the designation of orbital | |
| 1963. |
The speed-time graph for a car is shown in below figure:Which part of the graph represents uniform motion of the car? |
Answer» The speed-time graph for a car is shown in below figure: Which part of the graph represents uniform motion of the car? |
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| 1964. |
The driver of a train A moving at a speed of 30 ms^{-1} sights another train B moving on the same track towards his train at a speed of 10 ms^{-1}. He immediately applies brakes and achives a uniform retardation of 4 ms^{-2} .To avoid head-on collision, what must be minimum dis†an ce between the trains? |
| Answer» The driver of a train A moving at a speed of 30 ms^{-1} sights another train B moving on the same track towards his train at a speed of 10 ms^{-1}. He immediately applies brakes and achives a uniform retardation of 4 ms^{-2} .To avoid head-on collision, what must be minimum dis†an ce between the trains? | |
| 1965. |
The weight of any person on the moon is about 16 times that on the earth. He can lift a mass of 15 kg on the earth. What will be the maximum mass, which can be lifted by the same force applied by the person on the moon? |
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Answer» The weight of any person on the moon is about 16 times that on the earth. He can lift a mass of 15 kg on the earth. What will be the maximum mass, which can be lifted by the same force applied by the person on the moon? |
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| 1966. |
Two identical blocks each of mass 10 kg are moving with a speed of 4m/s towards each other along a frictionless horizontal surface. The two blocks collide, stick together and come to rest. Consider the two blocks as a system, work done by external force is |
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Answer» Two identical blocks each of mass 10 kg are moving with a speed of 4m/s towards each other along a frictionless horizontal surface. The two blocks collide, stick together and come to rest. Consider the two blocks as a system, work done by external force is |
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| 1967. |
'A' is moving towards east at 2 km/hr. 'B' is moving towards east at 3 km/hr. Relative speed of B to A is |
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Answer» 'A' is moving towards east at 2 km/hr. 'B' is moving towards east at 3 km/hr. Relative speed of B to A is |
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| 1968. |
A settling tank in a water treatment plant is designed for a surface overflow rate of 30 m3/day.m2. Assume specific gravity of sediment particles =2.65, density of water ( p ) = 1000 kg/m3, dynamic viscosity of water (μ)=0.001N.s/m2, and stoke's law is valid. The approximate minimum size of particles that would be completely removed is: |
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Answer» A settling tank in a water treatment plant is designed for a surface overflow rate of 30 m3/day.m2. Assume specific gravity of sediment particles =2.65, density of water ( p ) = 1000 kg/m3, dynamic viscosity of water (μ)=0.001N.s/m2, and stoke's law is valid. The approximate minimum size of particles that would be completely removed is: |
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| 1969. |
IF Pressure is proportional to temperature and volume is also proportional to temperature then why pressure is inversely proportional to volume. |
| Answer» IF Pressure is proportional to temperature and volume is also proportional to temperature then why pressure is inversely proportional to volume. | |
| 1970. |
In the arrangement shown in Figure, there are two coils wound on a non-conducting cylindrical rod. Initially, the key is not inserted. Then the key is inserted and later removed. Then |
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Answer» In the arrangement shown in Figure, there are two coils wound on a non-conducting cylindrical rod. Initially, the key is not inserted. Then the key is inserted and later removed. Then
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| 1971. |
Question 22(i)An electron moving with a velocity of 5×104ms−1 enters into a uniform electric field and acquires a uniform acceleration of 104ms−2 in the direction of its initial motion.(i) Calculate the time in which the electron would acquire a velocity double of its initial velocity. |
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Answer» Question 22(i) An electron moving with a velocity of 5×104ms−1 enters into a uniform electric field and acquires a uniform acceleration of 104ms−2 in the direction of its initial motion. (i) Calculate the time in which the electron would acquire a velocity double of its initial velocity. |
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| 1972. |
A particle starts from rest and moves with an acceleration of =[4−|t−3|]ms2 where ′t′ is in seconds. The velocity of the particle when it is 2 m from the origin is |
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Answer» A particle starts from rest and moves with an acceleration of =[4−|t−3|]ms2 where ′t′ is in seconds. The velocity of the particle when it is 2 m from the origin is |
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| 1973. |
A car travels 100 km at a speed of 60 km/h and returns with a speed of 40 km/h. Calculate the average speed for the whole journey. |
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Answer» A car travels 100 km at a speed of 60 km/h and returns with a speed of 40 km/h. Calculate the average speed for the whole journey. |
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| 1974. |
A boy is running with a velocity of 2 ms−1. He jumps over a stationary cart of 2 kg while running. If the mass of the boy is of 20 kg, find the velocity at which the cart moves after he jumps over the cart. (Neglect friction between the cart and the ground) |
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Answer» A boy is running with a velocity of 2 ms−1. He jumps over a stationary cart of 2 kg while running. If the mass of the boy is of 20 kg, find the velocity at which the cart moves after he jumps over the cart. (Neglect friction between the cart and the ground) |
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| 1975. |
A cyclist goes around a circular track once every 2 minutes. If the radius of the circular track is 110 m, calculate the speed of cyclists. |
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Answer» A cyclist goes around a circular track once every 2 minutes. If the radius of the circular track is 110 m, calculate the speed of cyclists.
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| 1976. |
How a distance travelled by a body can be zero according to the topic path distance? |
| Answer» How a distance travelled by a body can be zero according to the topic path distance? | |
| 1977. |
A circular coil rotates about its diameter which is normal to the magnetic field. If Eo is the Maximum value of the induced emf. The instantaneous emf when the plane of coil makes an angle 60 degrees with the magnetic field |
| Answer» A circular coil rotates about its diameter which is normal to the magnetic field. If Eo is the Maximum value of the induced emf. The instantaneous emf when the plane of coil makes an angle 60 degrees with the magnetic field | |
| 1978. |
What is the per capita income of the Indian Economy? |
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Answer» What is the per capita income of the Indian Economy? |
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| 1979. |
from the top of the tower of hight 100m a body A is thrown vertically upward with a speed 100m/s and a body B isthrown vertically downward with a speed 20m/s. relative acclaration of A w.r.t. b is? |
| Answer» from the top of the tower of hight 100m a body A is thrown vertically upward with a speed 100m/s and a body B isthrown vertically downward with a speed 20m/s. relative acclaration of A w.r.t. b is? | |
| 1980. |
What dose this mean "when a charged partice moves parallel (either in the same direction or in opposite direction ) to the magnetic field, the magnetic force acting on particle is zero What does parallel mean? Force on a moving charge in magnetic field |
| Answer» What dose this mean "when a charged partice moves parallel (either in the same direction or in opposite direction ) to the magnetic field, the magnetic force acting on particle is zero What does parallel mean? Force on a moving charge in magnetic field | |
| 1981. |
Which of the following electric cell can be used in a circuit where 20 J of energy is required to move a charge of 5 C? |
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Answer» Which of the following electric cell can be used in a circuit where 20 J of energy is required to move a charge of 5 C? |
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| 1982. |
A cricket ball of mass 200 g moving with a speed of 40 m s−1is brought to rest by a player in 0.04 s. Calculate the following :(i) change in momentum of the ball,(ii) average force applied by the player. |
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Answer» A cricket ball of mass 200 g moving with a speed of 40 m s−1is brought to rest by a player in 0.04 s. Calculate the following : (i) change in momentum of the ball, (ii) average force applied by the player. |
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| 1983. |
Two rods (one semi-circular and other straight) of same material and of same cross-sectional area are joined as shown in the figure. The points A and B are maintained at different temperature. The ratio of the heat transferred through a cross-section of a |
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Answer» Two rods (one semi-circular and other straight) of same material and of same cross-sectional area are joined as shown in the figure. The points A and B are maintained at different temperature. The ratio of the heat transferred through a cross-section of a
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| 1984. |
1 g of hydrogen is converted into 0.993 g of helium in a thermo-nuclear reaction. The energy released is |
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Answer» 1 g of hydrogen is converted into 0.993 g of helium in a thermo-nuclear reaction. The energy released is |
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| 1985. |
ntA body is projected vertically upwards with speed 10m/s and other at same time with same speed in downward direction from the top of a tower .The magnitude of acceleration of first body with respect to second is( g=10m/s)n |
| Answer» ntA body is projected vertically upwards with speed 10m/s and other at same time with same speed in downward direction from the top of a tower .The magnitude of acceleration of first body with respect to second is( g=10m/s)n | |
| 1986. |
a bullet of mass 20g moving with velocity of 200m/s strike and gets embedded into a stationary wooden block of mass 980g . find the velocity with which the block moves . |
| Answer» a bullet of mass 20g moving with velocity of 200m/s strike and gets embedded into a stationary wooden block of mass 980g . find the velocity with which the block moves . | |
| 1987. |
In acceleration topic the video understanding acceleration in this video the formula of velocity show the triangle sign before displacement what is it? |
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Answer» In acceleration topic the video understanding acceleration in this video the formula of velocity show the triangle sign before displacement what is it? |
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| 1988. |
Question 7 NCERT Pg 128 A 8000 kg engine pulls a train of 5 wagons, each of 2000 kg along a horizontal track. If the engine exerts a force of 40000 N and the track offers a friction force of 5000 N, then calculate: (a) the net accelerating force; (b) the acceleration of the train; and (c) the force of wagon 1 on wagon 2 {The explanation of this question on the Byju's premium app is wrong; the weight of the engine has not been considered} |
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Answer» Question 7 NCERT Pg 128 A 8000 kg engine pulls a train of 5 wagons, each of 2000 kg along a horizontal track. If the engine exerts a force of 40000 N and the track offers a friction force of 5000 N, then calculate: (a) the net accelerating force; (b) the acceleration of the train; and (c) the force of wagon 1 on wagon 2 {The explanation of this question on the Byju's premium app is wrong; the weight of the engine has not been considered} |
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| 1989. |
Identify vector quantities from the following. |
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Answer» Identify vector quantities from the following.
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| 1990. |
A point object is kept at 30 cm from convex lens of focal length f = 20 cm. A convex mirror is kept at 20 cm from the lens so that virtual object for convex mirror lies at its centre of curvature. The focal length of the mirror is |
| Answer» A point object is kept at 30 cm from convex lens of focal length f = 20 cm. A convex mirror is kept at 20 cm from the lens so that virtual object for convex mirror lies at its centre of curvature. The focal length of the mirror is | |
| 1991. |
Draw the graph of total Energy vs height of a ball dropped from a height of 'h' m from the ground.Mass of ball = 'm' kg and acceleration due to gravity = 'g' ms−2. |
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Answer» Draw the graph of total Energy vs height of a ball dropped from a height of 'h' m from the ground. Mass of ball = 'm' kg and acceleration due to gravity = 'g' ms−2. |
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| 1992. |
Question 26 (b) (b) A ball weighing 4 kg of density 4000 kgm–3 is completely immersed in water of density 103kgm–3 Find the force of buoyancy on it. (Given g=10ms–2). |
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Answer» Question 26 (b) |
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| 1993. |
What do you understand by the conservation of mechanical energy? State the condition under which the mechanical energy is conserved. |
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Answer» What do you understand by the conservation of mechanical energy? State the condition under which the mechanical energy is conserved. |
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| 1994. |
A beam of light is incident through the holes on side A and emerges out of the holes on the other face of the box as shown in the figure. Which of the following could be inside the box? |
Answer» A beam of light is incident through the holes on side A and emerges out of the holes on the other face of the box as shown in the figure. Which of the following could be inside the box? |
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| 1995. |
A particle moves xerox in time to according to equationx=1(t+5) the acceleration of particle is proportionamed to |
| Answer» A particle moves xerox in time to according to equationx=1(t+5) the acceleration of particle is proportionamed to | |
| 1996. |
A spring balance records a weight of one kg when a body is suspended from it. When the body is fully immersed inaliquid ,the reading recorded by the spring balance is zero.What is the apparent density of the body ? |
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Answer» A spring balance records a weight of one kg when a body is suspended from it. When the body is fully immersed inaliquid ,the reading recorded by the spring balance is zero.What is the apparent density of the body ? |
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| 1997. |
What is the reading of a bathroom scale when Alan of mass72kg stands on it while riding in an elevator accelerating upwards at 5.4m/s2 |
| Answer» What is the reading of a bathroom scale when Alan of mass72kg stands on it while riding in an elevator accelerating upwards at 5.4m/s2 | |
| 1998. |
A train starting from a stationary position and moving with uniform acceleration attain a speed of 36km/h in 10 minutes.Find its acceleration. |
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Answer» A train starting from a stationary position and moving with uniform acceleration attain a speed of 36km/h in 10 minutes.Find its acceleration. |
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| 1999. |
83.Explain hatch slack pathway or C4 cycle |
| Answer» 83.Explain hatch slack pathway or C4 cycle | |
| 2000. |
Find the electric current that flows through a conductor if a charge of 0.8 C flows through it in 4 seconds. |
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Answer» Find the electric current that flows through a conductor if a charge of 0.8 C flows through it in 4 seconds. |
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