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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.
| 4401. |
Elastic potential energy of a body can be achieved by |
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Answer» Elastic potential energy of a body can be achieved by |
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| 4402. |
if the size of nucleus (=10-15) ie 10 to the power -15m is scaled upto the tip of a sharp pin (10-5m) ie 10 to the power -5m than whatroughly ia the size of the aton |
| Answer» if the size of nucleus (=10-15) ie 10 to the power -15m is scaled upto the tip of a sharp pin (10-5m) ie 10 to the power -5m than whatroughly ia the size of the aton | |
| 4403. |
Branch of physics which deals with magnetic effects of electric current is called:- |
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Answer» Branch of physics which deals with magnetic effects of electric current is called:- |
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| 4404. |
The SI unit of current is: |
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Answer» The SI unit of current is: |
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| 4405. |
when a gun is at rest, then its initial momentum is zero. now when the bullet is fired, the iniial and final momentum should be same. we can write it as m_2+v_2+m_1v_1=0.Recoil velocity of gun is in opposite direction, so m_1v_1+\lbrack-m_2v_2\rbrack =0 because of opposite direction. this gives us m_1v_1=m_2v_2.But the direction of momentum is opposite so where does the negative sign goes |
| Answer» when a gun is at rest, then its initial momentum is zero. now when the bullet is fired, the iniial and final momentum should be same. we can write it as m_2+v_2+m_1v_1=0.Recoil velocity of gun is in opposite direction, so m_1v_1+\lbrack-m_2v_2\rbrack =0 because of opposite direction. this gives us m_1v_1=m_2v_2.But the direction of momentum is opposite so where does the negative sign goes | |
| 4406. |
In which time period is the object travelling at 5 km/h? |
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Answer»
In which time period is the object travelling at 5 km/h? |
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| 4407. |
Weight of an astronaut and his space suit on the Earth is 60 kgf and 30 kgf respectively. Their combined weight on the Moon will be: |
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Answer» Weight of an astronaut and his space suit on the Earth is 60 kgf and 30 kgf respectively. Their combined weight on the Moon will be: |
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| 4408. |
Light rays are passing through a convex lens as shown. Tap the correct ray path(s). |
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Answer» Light rays are passing through a convex lens as shown. Tap the correct ray path(s). |
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| 4409. |
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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| 4410. |
A particle goes is in the form of a circle of radius 2.0 cm. A concave mirror of focal length 20 cm is placed with its principal axis passing through the centre of the circle and perpendicular to its plane. The distance between the pole of the mirror and the centre of the circle is 30 cm. Calculate the radius of the circle formed as the image. |
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Answer» A particle goes is in the form of a circle of radius 2.0 cm. A concave mirror of focal length 20 cm is placed with its principal axis passing through the centre of the circle and perpendicular to its plane. The distance between the pole of the mirror and the centre of the circle is 30 cm. Calculate the radius of the circle formed as the image. |
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| 4411. |
Some mercury is poured into a capillary tube of uniform bore and one end closed. When the tube is held horizontally, mercury column has a length of 4 cm and air enclosed in the closed end has a length of 10 cm. If the tube is now held vertically, with open end upwards, the length of the air column will be (take atmospheri pressure at the place of experiment to be 760 mm). (1) 10.5 cm (2) 8.5 cm (3) 9.2 cm (4) 9.5 cm |
| Answer» Some mercury is poured into a capillary tube of uniform bore and one end closed. When the tube is held horizontally, mercury column has a length of 4 cm and air enclosed in the closed end has a length of 10 cm. If the tube is now held vertically, with open end upwards, the length of the air column will be (take atmospheri pressure at the place of experiment to be 760 mm). (1) 10.5 cm (2) 8.5 cm (3) 9.2 cm (4) 9.5 cm | |
| 4412. |
The mirror formula is given by , which relates object distance (u), image distance (v), and focal length (f). |
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Answer» The mirror formula is given by |
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| 4413. |
Two sounds in a medium are having wavelengths 1.3 m and 3.9 m. A person listens to these sounds. What difference would the listener feel? |
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Answer» Two sounds in a medium are having wavelengths 1.3 m and 3.9 m. A person listens to these sounds. What difference would the listener feel? |
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| 4414. |
67 a particle moves with a velocity v=at^3along a straight line.the average speed intimeintervalt=0tot=Tis? |
| Answer» 67 a particle moves with a velocity v=at^3along a straight line.the average speed intimeintervalt=0tot=Tis? | |
| 4415. |
Tinku dropped a stone into a very deep well. He hears the sound 6.53 s after he dropped the stone. Find the depth of the well. Take acceleration due to gravity, g=10 ms−2 and vsound=340 ms−1. |
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Answer» Tinku dropped a stone into a very deep well. He hears the sound 6.53 s after he dropped the stone. Find the depth of the well. Take acceleration due to gravity, g=10 ms−2 and vsound=340 ms−1. |
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| 4416. |
The focal length of a concave mirror is f and the distance from the object to the principal focus is x. The ratio of the size of the image to the size of the object is |
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Answer» The focal length of a concave mirror is f and the distance from the object to the principal focus is x. The ratio of the size of the image to the size of the object is |
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| 4417. |
What is the distance covered by a car in 4 h if it is moving with a speed of 35 km/h? |
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Answer» What is the distance covered by a car in 4 h if it is moving with a speed of 35 km/h? |
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| 4418. |
The potential energy of a particle: v=A root over x/ x + B , where x= distance and A and B are constants .Find the dimensions of A and B. |
| Answer» The potential energy of a particle: v=A root over x/ x + B , where x= distance and A and B are constants .Find the dimensions of A and B. | |
| 4419. |
2. Three smal solid spheres each of mass m andcharge Q is placed on a rough horizontal surfaceFriction is sufficient to prevent slipping. Thepheres are at the corners of equilateral triangle ofside I. The linear velocity of each sphere when theseparation between the spheres becomes verylarge is7(1)14m, m/(3)V14πε 0 ml |
| Answer» 2. Three smal solid spheres each of mass m andcharge Q is placed on a rough horizontal surfaceFriction is sufficient to prevent slipping. Thepheres are at the corners of equilateral triangle ofside I. The linear velocity of each sphere when theseparation between the spheres becomes verylarge is7(1)14m, m/(3)V14πε 0 ml | |
| 4420. |
4900 J of work is done in lifting a body of 50 kg mass. Calculate the height through which the body is raised. |
| Answer» 4900 J of work is done in lifting a body of 50 kg mass. Calculate the height through which the body is raised. | |
| 4421. |
The apparent weight of a person in a lift moving downwards is half his apparent weight in the same lift moving upwards with the same magnitude of acceleration. Acceleration of the lift is |
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Answer» The apparent weight of a person in a lift moving downwards is half his apparent weight in the same lift moving upwards with the same magnitude of acceleration. Acceleration of the lift is |
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| 4422. |
A magnetic compass shows a deflection when placed near a current carrying wire. Which rule help in findingthe direction of deflection? Explain that rule properly. How does the deflection of compass get affected if the crrent in the wire is decreased? |
| Answer» A magnetic compass shows a deflection when placed near a current carrying wire. Which rule help in findingthe direction of deflection? Explain that rule properly. How does the deflection of compass get affected if the crrent in the wire is decreased? | |
| 4423. |
1. A small mass'm' attached to one end of a spring with a negligible mass and an unstretched length'L', executes vertical oscillations with angular frequency W. When the mass is rotated with an angular speed W' by holding the other end of the spring at a fixed point, the mass moves uniformly in a circular path in a horizontal plane. The increase in the length of the spring during this rotation is |
| Answer» 1. A small mass'm' attached to one end of a spring with a negligible mass and an unstretched length'L', executes vertical oscillations with angular frequency W. When the mass is rotated with an angular speed W' by holding the other end of the spring at a fixed point, the mass moves uniformly in a circular path in a horizontal plane. The increase in the length of the spring during this rotation is | |
| 4424. |
what is a difference between density ,mass and volum |
| Answer» what is a difference between density ,mass and volum | |
| 4425. |
Explain why fossil fuels are exhaustible natural resources. |
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Answer» Explain why fossil fuels are exhaustible natural resources. |
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| 4426. |
why we consider only resis†an ce of a conductor while determining the power loss ?Does current and potential difference have no role to play? |
| Answer» why we consider only resis†an ce of a conductor while determining the power loss ?Does current and potential difference have no role to play? | |
| 4427. |
A particle of mass m is moving along a line 2x-3y= 4 with a velocity V. The angular momentum of the particle about origin will be? |
| Answer» A particle of mass m is moving along a line 2x-3y= 4 with a velocity V. The angular momentum of the particle about origin will be? | |
| 4428. |
Which of the following is incorrect? |
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Answer» Which of the following is incorrect? |
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| 4429. |
Consider the following statements: I) Dentists use convex mirrors. II) Automobiles use concave mirrors as the rear view mirrors. III) In a convex mirror, the reflecting surface is bulging out. IV) In a concave mirror, the reflecting surface is bulging in. Choose the correct option. |
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Answer» Consider the following statements: I) Dentists use convex mirrors. II) Automobiles use concave mirrors as the rear view mirrors. III) In a convex mirror, the reflecting surface is bulging out. IV) In a concave mirror, the reflecting surface is bulging in. Choose the correct option. |
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| 4430. |
Find the principal quantum number for the electron having the de Broglie wavelength in an orbit of hydrogen atom is 10^{-9}m |
| Answer» Find the principal quantum number for the electron having the de Broglie wavelength in an orbit of hydrogen atom is 10^{-9}m | |
| 4431. |
Imagine of a light planet revolving around a massive star in a circular orbit of radius r with a period of revolution T. If the gravitational force of attraction between the planet and the star is proportional to r52, then the square of the time period will be proportional to |
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Answer» Imagine of a light planet revolving around a massive star in a circular orbit of radius r with a period of revolution T. If the gravitational force of attraction between the planet and the star is proportional to r52, then the square of the time period will be proportional to |
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| 4432. |
10. A body cover a distance of 20 m in 7th second and 24 m in 9th second. How much distance will it cover in 15th second |
| Answer» 10. A body cover a distance of 20 m in 7th second and 24 m in 9th second. How much distance will it cover in 15th second | |
| 4433. |
____ is a change in the position of an object with respect to time. |
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Answer» ____ is a change in the position of an object with respect to time. |
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| 4434. |
Does universal gravitation constant depends on anything? |
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Answer» Does universal gravitation constant depends on anything? |
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| 4435. |
Which of the given objects are measured in kg? |
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Answer» Which of the given objects are measured in kg? |
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| 4436. |
The least count of a metre rule is? |
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Answer» The least count of a metre rule is? |
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| 4437. |
At 40∘C, a brass rod has a length 50 cm and a diameter 3.0 mm, is joined in series to a steel rod of the same length and diameter at the same temperature. What is the change in the length of the composite rod(in cm), when it is heated to 240∘C ?The coefficients of linear expansion of brass and steel are 2.0×10−5∘C−1 and 1.2×10−5∘C−1 respectively: |
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Answer» At 40∘C, a brass rod has a length 50 cm and a diameter 3.0 mm, is joined in series to a steel rod of the same length and diameter at the same temperature. What is the change in the length of the composite rod(in cm), when it is heated to 240∘C ? The coefficients of linear expansion of brass and steel are 2.0×10−5∘C−1 and 1.2×10−5∘C−1 respectively: |
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| 4438. |
ntA body of mass 2 kg moving with a speed of 100 m/s hits a wall and rebounds with the same speed. If the contact time is (1 /50) s, the force applied on the wall isn |
| Answer» ntA body of mass 2 kg moving with a speed of 100 m/s hits a wall and rebounds with the same speed. If the contact time is (1 /50) s, the force applied on the wall isn | |
| 4439. |
What is angular velocity? |
| Answer» What is angular velocity? | |
| 4440. |
A bullet is fire from rifle and a plank is in the way of bullet. If a plank reduce velocity of bullet by 1/ 20. How many plank required to stop the bullet? |
| Answer» A bullet is fire from rifle and a plank is in the way of bullet. If a plank reduce velocity of bullet by 1/ 20. How many plank required to stop the bullet? | |
| 4441. |
119.Current flowing through a conducting wire is given by, I = 1 + 2 t, (where t is in seconds and current I is in amperes). The charge (in coulombs) flows through the resistor from t = 0 to t = 1 second is |
| Answer» 119.Current flowing through a conducting wire is given by, I = 1 + 2 t, (where t is in seconds and current I is in amperes). The charge (in coulombs) flows through the resistor from t = 0 to t = 1 second is | |
| 4442. |
Working of solar cell and LED explaination with I V graph |
| Answer» Working of solar cell and LED explaination with I V graph | |
| 4443. |
what is moment of inertia? |
| Answer» what is moment of inertia? | |
| 4444. |
A rifle man, who together with his rifle has a mass of 100 kg, stands on a smooth surface fires 10 shots horizontally. Each bullet has a mass 10 g projected with velocity of 800 m/s. What velocity does rifle man acquire at the end of 10 shots? |
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Answer» A rifle man, who together with his rifle has a mass of 100 kg, stands on a smooth surface fires 10 shots horizontally. Each bullet has a mass 10 g projected with velocity of 800 m/s. What velocity does rifle man acquire at the end of 10 shots? |
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| 4445. |
1 newton is force for accelerating 1kg with acceleration of 1m/s² in presence of frictional force or in absence of frictional force |
| Answer» 1 newton is force for accelerating 1kg with acceleration of 1m/s² in presence of frictional force or in absence of frictional force | |
| 4446. |
According to the velocity-time graph given below, what is the initial velocity of the car? |
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Answer» According to the velocity-time graph given below, what is the initial velocity of the car?
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| 4447. |
Which of the following statements is true? |
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Answer» Which of the following statements is true? |
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| 4448. |
A and B are two points on a uniform ring of resistance R made of material of resistivity ρ as shown in the figure. Find the equivalent resistance between A and B interms of R. |
Answer» A and B are two points on a uniform ring of resistance R made of material of resistivity ρ as shown in the figure. Find the equivalent resistance between A and B interms of R. |
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| 4449. |
An artificial planet is moving in a circular orbit of radius 42250 km. Calculate its speed if it takes 24 hours to revolve around the earth. |
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Answer» An artificial planet is moving in a circular orbit of radius 42250 km. Calculate its speed if it takes 24 hours to revolve around the earth. |
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| 4450. |
A piece of wood having dimensions 1 m by 2 m by 3 m and 2 kg mass. What is the density of wood? Will the wood float in water? (dwater = 1000kg(m3)) |
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Answer» A piece of wood having dimensions 1 m by 2 m by 3 m and 2 kg mass. What is the density of wood? Will the wood float in water? (dwater = 1000kg(m3)) |
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