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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.
| 4051. |
189. In the Fig. 7.433 shown the acceleration of A is,a=15i + 15j then the acceleration of B is (A remains in contact with |
| Answer» 189. In the Fig. 7.433 shown the acceleration of A is,a=15i + 15j then the acceleration of B is (A remains in contact with | |
| 4052. |
A particle moves on a circular path of radius r, It completes one revolution in 40 s. Caluculate distance and displacement in 2 min 20 s. |
| Answer» A particle moves on a circular path of radius r, It completes one revolution in 40 s. Caluculate distance and displacement in 2 min 20 s. | |
| 4053. |
Two-point charges +3 μC and +8 μC repel each other with a force of 40 N. If a charge of −5 μC is added to each of them, then the force between them will become |
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Answer» Two-point charges +3 μC and +8 μC repel each other with a force of 40 N. If a charge of −5 μC is added to each of them, then the force between them will become |
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| 4054. |
Gravitational force is proportional to the product of the_____ and inversely proportional to the square of _____ between two bodies. |
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Answer» Gravitational force is proportional to the product of the_____ and inversely proportional to the square of _____ between two bodies. |
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| 4055. |
An object is put one by one in three liquids having different densities. The object floats with 1/9, 2/11, 3/7 parts of their volumes outside the liquid surface in liquids of densities d1,d2 and d3 respectively. Which of the following statement is correct? |
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Answer» An object is put one by one in three liquids having different densities. The object floats with 1/9, 2/11, 3/7 parts of their volumes outside the liquid surface in liquids of densities d1,d2 and d3 respectively. Which of the following statement is correct? |
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| 4056. |
To reduce reverberations, the roofs and walls of the auditorium are |
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Answer» To reduce reverberations, the roofs and walls of the auditorium are |
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| 4057. |
What is the quantity which is measured by the area occupied below the velocity-time graph? |
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Answer» What is the quantity which is measured by the area occupied below the velocity-time graph? |
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| 4058. |
There are two bodies of masse 100 kg and 10000 kg seperated by distance 1 m . At what distance from the smaller body, intensity of gravitational field be 0. |
| Answer» There are two bodies of masse 100 kg and 10000 kg seperated by distance 1 m . At what distance from the smaller body, intensity of gravitational field be 0. | |
| 4059. |
wave is represented by y=10−4sin(100t−x10) m, then the velocity of wave will be |
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Answer» wave is represented by y=10−4sin(100t−x10) m, then the velocity of wave will be |
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| 4060. |
A concave lens of focal length 15 cm forms an image 10 cm from the lens. How far is the object placed from the lens? |
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Answer» A concave lens of focal length 15 cm forms an image 10 cm from the lens. How far is the object placed from the lens? |
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| 4061. |
16.A uniform elastic string has a length when tension is and length when tension is the amount of work done in stretching It from its natural length ito a length(a1+a2) is: |
| Answer» 16.A uniform elastic string has a length when tension is and length when tension is the amount of work done in stretching It from its natural length ito a length(a1+a2) is: | |
| 4062. |
50. Is equivalent weigt always less than or equal to molecular weight of metal |
| Answer» 50. Is equivalent weigt always less than or equal to molecular weight of metal | |
| 4063. |
Rewrite the following table so as to match second and third column with the first column: No. Column 1 Column 2 Column 3 1. Negative acceleration Body has constant velocity. A car initially at rest acquires velocity 50km/h in 10 second. 2. Positive acceleration Velocity of a body decreases. A vehicle moving with velocity 25 m/s. 3. Zero acceleration Velocity of a body increases. A vehicle moving with a speed of 10 m/s stops after 5 second. |
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Answer» Rewrite the following table so as to match second and third column with the first column:
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| 4064. |
In the distance-time graph of a cyclist, what is happening between B-C and C-D? |
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Answer»
In the distance-time graph of a cyclist, what is happening between B-C and C-D? |
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| 4065. |
If earth pulls the moon by the gravitational force,then why does the moon not collide with the earth? |
| Answer» If earth pulls the moon by the gravitational force,then why does the moon not collide with the earth? | |
| 4066. |
A and B are two hills at a distance 480m apart. A person standing between the hills , clasps his hands and hears two echoes at the end of 1sec and 2secs . Find the velocity of sound in air. |
| Answer» A and B are two hills at a distance 480m apart. A person standing between the hills , clasps his hands and hears two echoes at the end of 1sec and 2secs . Find the velocity of sound in air. | |
| 4067. |
More care is needed to store kerosene than coal.why? |
| Answer» More care is needed to store kerosene than coal.why? | |
| 4068. |
if sn =2+0.4n find intial velocity and acceleration |
| Answer» if sn =2+0.4n find intial velocity and acceleration | |
| 4069. |
How power is related to work? |
| Answer» How power is related to work? | |
| 4070. |
What happens to the potential energy of a body when its height id doubled ? |
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Answer» What happens to the potential energy of a body when its height id doubled ? |
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| 4071. |
The velocity of an object changes from 20 m/s along positive X-axis to 10 m/s along positive X-axis in 10 seconds, then the average acceleration of the object in given time interval is ( take positive X-direction as positive ) |
| Answer» The velocity of an object changes from 20 m/s along positive X-axis to 10 m/s along positive X-axis in 10 seconds, then the average acceleration of the object in given time interval is ( take positive X-direction as positive ) | |
| 4072. |
Presbyopia is due to the diminishing ability of: |
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Answer» Presbyopia is due to the diminishing ability of: |
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| 4073. |
In which medium (solid, liquid or gas) does sound travel the fastest? |
| Answer» In which medium (solid, liquid or gas) does sound travel the fastest? | |
| 4074. |
The hour hand of a clock is 4 cm long. What is the distance and displacement that its tip would cover in 12 hours? |
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Answer» The hour hand of a clock is 4 cm long. What is the distance and displacement that its tip would cover in 12 hours? |
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| 4075. |
An object weighs 50 N. Weight of water of volume equal to the volume of the object is 70 N. Find out the relative density (ρr) of the object. |
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Answer» An object weighs 50 N. Weight of water of volume equal to the volume of the object is 70 N. Find out the relative density (ρr) of the object. |
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| 4076. |
A concave mirror is placed on a horizontal table ,with its axis directed vertically upwards.let O be the pole of mirror and C its centre of curvature . A Point object is placed at C ,it has real image ,also located at C if teh mirror is now filled with water ,the image will be kindly tell the characrterstics of image like position and nature |
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Answer» A concave mirror is placed on a horizontal table ,with its axis directed vertically upwards.let O be the pole of mirror and C its centre of curvature . A Point object is placed at C ,it has real image ,also located at C if teh mirror is now filled with water ,the image will be kindly tell the characrterstics of image like position and nature |
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| 4077. |
An object of mass 5 kg is raised 10 m above the ground. If it is allowed to fall, its kinetic energy when it is reached 14th way down is [Take acceleration due to gravity as 10 m/s2] |
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Answer» An object of mass 5 kg is raised 10 m above the ground. If it is allowed to fall, its kinetic energy when it is reached 14th way down is [Take acceleration due to gravity as 10 m/s2] |
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| 4078. |
28.The potentials of two points A and B are respectively +V and -V volt. If the distance between them be r metre, then calculate (i) average electric field between A and B, (ii) change in potential energy in moving q coulomb of charge from point A to B. |
| Answer» 28.The potentials of two points A and B are respectively +V and -V volt. If the distance between them be r metre, then calculate (i) average electric field between A and B, (ii) change in potential energy in moving q coulomb of charge from point A to B. | |
| 4079. |
Question 55(vi)Study the graph given below of a person who started from his home and returned at the end of the day. Answer the questions that follow.At what did he cover 16km of his journey? |
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Answer» Question 55(vi) Study the graph given below of a person who started from his home and returned at the end of the day. Answer the questions that follow.  At what did he cover 16km of his journey? |
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| 4080. |
If force F acting on the body passes through hinge point torque in body is a)torque is clock wise b)torque anticlockwise c), |
| Answer» If force F acting on the body passes through hinge point torque in body is a)torque is clock wise b)torque anticlockwise c), | |
| 4081. |
Identify the type of friction from the given images.(Fill in the answer using the given characters.) |
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Answer» Identify the type of friction from the given images. |
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| 4082. |
two charges q and -3q are placed fixed on x-axis separated by distance 'd' . where should a third charge 2q be placed such that it will not experience any force ? |
| Answer» two charges q and -3q are placed fixed on x-axis separated by distance 'd' . where should a third charge 2q be placed such that it will not experience any force ? | |
| 4083. |
It is said that there is no shield found which can stop gravity acting. But there is a force called centripetal force which acts between planets so that they don't bump into each other. So is'nt it that centripetal force is a shield to gravity? |
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Answer» It is said that there is no shield found which can stop gravity acting. But there is a force called centripetal force which acts between planets so that they don't bump into each other. So is'nt it that centripetal force is a shield to gravity? |
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| 4084. |
what is mean by reversible and irreversible engine ? |
| Answer» what is mean by reversible and irreversible engine ? | |
| 4085. |
Why is damage to the ozone layer a cause for concern? What steps are being taken to limit this damage? |
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Answer» Why is damage to the ozone layer a cause for concern? What steps are being taken to limit this damage? |
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| 4086. |
An object thrown vertically upwards, rises to a maximum height of 10 m. What is the velocity with which it is thrown upwards? (Take g=9.8 m s−2)14 |
Answer» An object thrown vertically upwards, rises to a maximum height of 10 m. What is the velocity with which it is thrown upwards? (Take g=9.8 m s−2)
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| 4087. |
A bat is flying around in a cave, navigating via ultrasonic sound. Assume that the sound emission frequency of the bat is 39000 Hz. During one fast swoop directly towards a flat wall surface, the bat is moving at 0.025 times the speed of sound in air. What frequency does the bat hear reflected off the wall? |
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Answer» A bat is flying around in a cave, navigating via ultrasonic sound. Assume that the sound emission frequency of the bat is 39000 Hz. During one fast swoop directly towards a flat wall surface, the bat is moving at 0.025 times the speed of sound in air. What frequency does the bat hear reflected off the wall? |
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| 4088. |
Which of the following does not possess the ability to do work not because of motion? (a) a sparrow flying in the sky (b) a sparrow moving slowly on the ground (c) a sparrow in the nest on a tree (d) a squirrel going up a tree |
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Answer» Which of the following does not possess the ability to do work not because of motion? (a) a sparrow flying in the sky (b) a sparrow moving slowly on the ground (c) a sparrow in the nest on a tree (d) a squirrel going up a tree |
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| 4089. |
64.A man of mass M stands at one end of a plank of length L which lies at rest on frictionless surface. The man walks on the other end of plank. If mass of plank is M/3 the distance man moves relative to the ground is |
| Answer» 64.A man of mass M stands at one end of a plank of length L which lies at rest on frictionless surface. The man walks on the other end of plank. If mass of plank is M/3 the distance man moves relative to the ground is | |
| 4090. |
If the Earth is at 14th of the present distance from the Sun, then the duration of a year on the Earth would have been ____ of the present duration of a year. |
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Answer» If the Earth is at 14th of the present distance from the Sun, then the duration of a year on the Earth would have been ____ of the present duration of a year. |
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| 4091. |
what is inertia ,name the two factors on which it depends |
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Answer» what is inertia ,name the two factors on which it depends |
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| 4092. |
If the radius of the first orbit of the hydrogen atom is 5.29×10−11 m, the radius of the second orbit will be |
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Answer» If the radius of the first orbit of the hydrogen atom is 5.29×10−11 m, the radius of the second orbit will be |
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| 4093. |
A new system of unit is choosen in which the unit of mass is ta\pm ken 10kg,unit of length is taken 100m and the unit of tie is taken 100s. what will be the speed of mass in this system |
| Answer» A new system of unit is choosen in which the unit of mass is ta\pm ken 10kg,unit of length is taken 100m and the unit of tie is taken 100s. what will be the speed of mass in this system | |
| 4094. |
35.Which part of the graph corresponds to negetive resistance and why ? The graph is I v/s V |
| Answer» 35.Which part of the graph corresponds to negetive resistance and why ? The graph is I v/s V | |
| 4095. |
Astronauts were moving towards space in the space shuttle. After regular interval of time it was announced that they were moving from one sphere to another sphere. Among the following which property will change while moving from one sphere to another. |
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Answer» Astronauts were moving towards space in the space shuttle. After regular interval of time it was announced that they were moving from one sphere to another sphere. Among the following which property will change while moving from one sphere to another. |
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| 4096. |
A body dipped into a liquid experiences an upthrust. State two factors on which upthrust on the body depends. |
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Answer» A body dipped into a liquid experiences an upthrust. State two factors on which upthrust on the body depends. |
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| 4097. |
20. What is absolute density and relative density? |
| Answer» 20. What is absolute density and relative density? | |
| 4098. |
If the length of a stretched string is shortened by20% and the tension is increased by 21% then the9.frequency (Let n initial frequency) |
| Answer» If the length of a stretched string is shortened by20% and the tension is increased by 21% then the9.frequency (Let n initial frequency) | |
| 4099. |
A particle stays at rest as seen in a frame. We can conclude that |
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Answer» A particle stays at rest as seen in a frame. We can conclude that |
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| 4100. |
An echo - sounder in a trawler (fishing boat) receives an echo from a shoal of fish 0.4 s after it was sent. If the speed of sound in water is 1500 m/s, how deep is the shoal ? (a) 150 m (b) 300 m (c) 600 m (d) 7500 m |
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Answer» An echo - sounder in a trawler (fishing boat) receives an echo from a shoal of fish 0.4 s after it was sent. If the speed of sound in water is 1500 m/s, how deep is the shoal ? (a) 150 m (b) 300 m (c) 600 m (d) 7500 m |
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