13232 + Interview Questions in Physics Page 45 InterviewSolution

2201.	A stone is dropped from a cliff. Find its speed after the stone has fallen from 100 m. (Take g=9.8 ms−2).
Answer» A stone is dropped from a cliff. Find its speed after the stone has fallen from 100 m. (Take $g = 9.8 m s^{- 2}$ ).

Discussion

2202.	An object experiences a net zero external force. Is it possible for the object to be traveling with non zero velocity. If yes, state the conditions that must be placed on the magnitude and direction of the velocity. If no provide a reason. I am not able to find it's answer
Answer» An object experiences a net zero external force. Is it possible for the object to be traveling with non zero velocity. If yes, state the conditions that must be placed on the magnitude and direction of the velocity. If no provide a reason. I am not able to find it's answer

Discussion

2203.	Can mass of a moving object change? Why?
Answer» Can mass of a moving object change? Why?

Discussion

2204.	From top of a tower, a ball a is dropped while ball b is projected horizontally. The time taken to reach the ground
Answer» From top of a tower, a ball a is dropped while ball b is projected horizontally. The time taken to reach the ground

Discussion

2205.	if the buoyant force on an object depends on its volume V immersed in a liquid and the acceleration due to gravity g .The correct expression for F can be
Answer» if the buoyant force on an object depends on its volume V immersed in a liquid and the acceleration due to gravity g .The correct expression for F can be

Discussion

2206.	The mass of a ball measured on earth is 5.0 kg. What will be the mass of the ball if it is taken on to the Moon?
Answer» The mass of a ball measured on earth is 5.0 kg. What will be the mass of the ball if it is taken on to the Moon?

Discussion

2207.	heat of combustion of C2H4 is -337 kcal if 5.6 lit o2 is used at stp in the combustion heat liberated i
Answer» heat of combustion of C2H4 is -337 kcal if 5.6 lit o2 is used at stp in the combustion heat liberated i

Discussion

2208.	Which of the following do not comes under the category of the units?
Answer» Which of the following do not comes under the category of the units?

Discussion

2209.	What is second law of motion? explain?
Answer» What is second law of motion? explain?

Discussion

2210.	a ball is projected vertically upwards at t=0 the ball is at same height at time 4s and 8s . The maximum height attained by the ball is (g=10 m/s^2)
Answer» a ball is projected vertically upwards at t=0 the ball is at same height at time 4s and 8s . The maximum height attained by the ball is (g=10 m/s^2)

Discussion

2211.	Why are all combustible substances not considered fuels?
Answer» Why are all combustible substances not considered fuels?

Discussion

2212.	How principal quantum number determine energy of orbitals?
Answer» How principal quantum number determine energy of orbitals?

Discussion

2213.	A bar magnet is broken in half and the two pieces are separated. Which of the following diagrams shows the magnetic field lines from the two pieces?
Answer» A bar magnet is broken in half and the two pieces are separated. Which of the following diagrams shows the magnetic field lines from the two pieces?

Discussion

2214.	A force F produces an acceleration 'a' in a body. The same force produces an acceleration 8a in another body. What is the mass of the body?
Answer» A force F produces an acceleration 'a' in a body. The same force produces an acceleration 8a in another body. What is the mass of the body?

Discussion

2215.	The unit of length,velocity, and force are doubled.which of the following is the correct change in the other change
Answer» The unit of length,velocity, and force are doubled.which of the following is the correct change in the other change

Discussion

2216.	Let’s assume I want to double the rate of a reaction. The constraint is that I can only increase the temperature by 10 K. Calculate the minimum activation energy required if the temperature is 300K.
Answer» Let’s assume I want to double the rate of a reaction. The constraint is that I can only increase the temperature by 10 K. Calculate the minimum activation energy required if the temperature is 300K.

Discussion

2217.	The unit of time is : (a) light year (b) parsec (c) leap year (d) angstrom.
Answer» The unit of time is : (a) light year (b) parsec (c) leap year (d) angstrom.

2217.

The unit of time is : (a) light year (b) parsec (c) leap year (d) angstrom.

Answer»

The unit of time is :

(a) light year (b) parsec

(c) leap year (d) angstrom.

Discussion

2218.	Find the maximum distance at which the human eye would be able to resolve the two headlights of a car which are at a distance of 1point 5 metres
Answer» Find the maximum distance at which the human eye would be able to resolve the two headlights of a car which are at a distance of 1point 5 metres

Discussion

2219.	What is the work done in moving a charge of 0.4 C across two points having a potential difference of 8 V?3.2
Answer» What is the work done in moving a charge of $0.4 C$ across two points having a potential difference of $8 V$ ? 3.2

Discussion

2220.	A body is projected with an initial velocity of 5i+12j.Its range is
Answer» A body is projected with an initial velocity of 5i+12j.Its range is

Discussion

2221.	A revolver of mass 500g fires a bullet of mass 10g with a speed of 100m/s. Find the initial momentum of revolver and bullet as a system.
Answer» A revolver of mass 500g fires a bullet of mass 10g with a speed of 100m/s. Find the initial momentum of revolver and bullet as a system.

Discussion

2222.	4 During nh second of its motion a body cov-ers a distance S with uniform accelerationa' and initial velocity 'u. Show that a=2Sn-2u/2n-1
Answer» 4 During nh second of its motion a body cov-ers a distance S with uniform accelerationa' and initial velocity 'u. Show that a=2Sn-2u/2n-1

Discussion

2223.	Explain why, the flash of lightning reaches us first and the sound of thunder is heard a little later.
Answer» Explain why, the flash of lightning reaches us first and the sound of thunder is heard a little later.

Discussion

2224.	In the circuit diagram given below. Find(i) Total resistance of the circuit(ii) Total current flowing in the circuit(iii) Potential difference across R14. Define one ohm.5. Define one ampere of current. [5 MARKS]
Answer» In the circuit diagram given below. Find (i) Total resistance of the circuit (ii) Total current flowing in the circuit (iii) Potential difference across $R_{1}$ 4. Define one ohm. 5. Define one ampere of current. [5 MARKS]

Discussion

2225.	At a certain distance from a point charge, the field intensity is 500 V/m and the electric potential is −3000 V. Then the distance from charge is
Answer» At a certain distance from a point charge, the field intensity is $500 V/m$ and the electric potential is $- 3000 V$ . Then the distance from charge is

Discussion

2226.	a tunnel is made in earth along a chord at a height y from centre of earth. a particle released in a tunnel at a dis†an ce x from centre of tunnel. then describe motion of particle. if motion is SHM,find time period of SHM?(assume tunnel is smooth)
Answer» a tunnel is made in earth along a chord at a height y from centre of earth. a particle released in a tunnel at a dis†an ce x from centre of tunnel. then describe motion of particle. if motion is SHM,find time period of SHM?(assume tunnel is smooth)

Discussion

2227.	To what height should an object of mass 2kg be raised so that its potential energy is 980J?
Answer» To what height should an object of mass $2 k g$ be raised so that its potential energy is $980 J$ ?

Discussion

2228.	While performing an experiment with a screw gauge to measure the diameter of a wire, a student finds that when the two jaws of the screw gauge are in contact with each other, the zero of the circular scale lies 5 divisions above the line of graduation. The pitch of the screw gauge is 1 mm and has 100 divisions on its circular scale. While measuring the diameter of the wire, 4 linear scale divisions are clearly visible while 63rd division on the circular scale coincides with the reference line. What is the diameter of the wire?
Answer» While performing an experiment with a screw gauge to measure the diameter of a wire, a student finds that when the two jaws of the screw gauge are in contact with each other, the zero of the circular scale lies 5 divisions above the line of graduation. The pitch of the screw gauge is 1 mm and has 100 divisions on its circular scale. While measuring the diameter of the wire, 4 linear scale divisions are clearly visible while $63^{r d}$ division on the circular scale coincides with the reference line. What is the diameter of the wire?

Discussion

2229.	A ship sends sonar and receives an echo after 2 seconds. If the speed of sound waves in water is 1500 m/s, then the depth of the sea is
Answer» A ship sends sonar and receives an echo after 2 seconds. If the speed of sound waves in water is 1500 m/s, then the depth of the sea is

Discussion

2230.	Four equal resistors R each are connected to form a square ABCD, one in each side. If an electric potential V is applied between point A and B then current flowing out of B is
Answer» Four equal resistors R each are connected to form a square ABCD, one in each side. If an electric potential V is applied between point A and B then current flowing out of B is

Discussion

2231.	A mercury barometer has a column height of 76 cm. What will be the height of the column if the mercury is replaced with an oil having a density of 760 kg m−3? (Density of mercury is 13600 kg m−3)
Answer» A mercury barometer has a column height of $76 c m$ . What will be the height of the column if the mercury is replaced with an oil having a density of $760 k g m^{- 3}$ ? (Density of mercury is $13600 k g m^{- 3}$ )

Discussion

2232.	Question 12The weight of an object at the center of the earth of radius R is(a) zero(b) infinite(c) R times the weight at the surface of the earth(d) 1R2 times the weight at surface of the earth
Answer» Question 12 The weight of an object at the center of the earth of radius R is (a) zero (b) infinite (c) R times the weight at the surface of the earth (d) $\frac{1}{R^{2}}$ times the weight at surface of the earth

Discussion

2233.	More than One Answer Typeएक से अधिक उत्तर प्रकार के प्रश्नWhich of the following velocity-time graph(s) is/are represents the displacement of 4 m?निम्नलिखित में से कौनसा/कौनसे वेग-समय आरेख 4 m के विस्थापन को प्रदर्शित करता है/करते हैं?
Answer» More than One Answer Type एक से अधिक उत्तर प्रकार के प्रश्न Which of the following velocity-time graph(s) is/are represents the displacement of 4 m? निम्नलिखित में से कौनसा/कौनसे वेग-समय आरेख 4 m के विस्थापन को प्रदर्शित करता है/करते हैं?

Discussion

2234.	Q. भारतीय संविधान के अनुसार, निम्नलिखित में से कौन राष्ट्रपति की सहमति से ही किसी विदेशी राज्य से उपाधि स्वीकार कर सकता है?1. भारतीय मूल का व्यक्ति जिसकी आयु 18 वर्ष से अधिक हो।2. राज्य के अधीन लाभ का पद धारण करने वाला विदेशी।3. एक भारतीय शिक्षाविद।नीचे दिए गए कूट का प्रयोग कर सही विकल्प का चयन कीजिए।
Answer» Q. भारतीय संविधान के अनुसार, निम्नलिखित में से कौन राष्ट्रपति की सहमति से ही किसी विदेशी राज्य से उपाधि स्वीकार कर सकता है? 1. भारतीय मूल का व्यक्ति जिसकी आयु 18 वर्ष से अधिक हो। 2. राज्य के अधीन लाभ का पद धारण करने वाला विदेशी। 3. एक भारतीय शिक्षाविद। नीचे दिए गए कूट का प्रयोग कर सही विकल्प का चयन कीजिए।

2234.

Q. भारतीय संविधान के अनुसार, निम्नलिखित में से कौन राष्ट्रपति की सहमति से ही किसी विदेशी राज्य से उपाधि स्वीकार कर सकता है?1. भारतीय मूल का व्यक्ति जिसकी आयु 18 वर्ष से अधिक हो।2. राज्य के अधीन लाभ का पद धारण करने वाला विदेशी।3. एक भारतीय शिक्षाविद।नीचे दिए गए कूट का प्रयोग कर सही विकल्प का चयन कीजिए।

Answer»

Q. भारतीय संविधान के अनुसार, निम्नलिखित में से कौन राष्ट्रपति की सहमति से ही किसी विदेशी राज्य से उपाधि स्वीकार कर सकता है?

1. भारतीय मूल का व्यक्ति जिसकी आयु 18 वर्ष से अधिक हो।

2. राज्य के अधीन लाभ का पद धारण करने वाला विदेशी।

3. एक भारतीय शिक्षाविद।

नीचे दिए गए कूट का प्रयोग कर सही विकल्प का चयन कीजिए।

Discussion

2235.	The orbit along which the sun appears to move among the stars is called
Answer» The orbit along which the sun appears to move among the stars is called

Discussion

2236.	What is frictional force ?
Answer» What is frictional force ?

Discussion

2237.	When F=ma then how mass and acceleration are inversly proportional to each other
Answer» When F=ma then how mass and acceleration are inversly proportional to each other

Discussion

2238.	A block of wood of weight 200gf floats on the surface of water. If the volume of block is 300cm³ the upthrust due to water is
Answer» A block of wood of weight 200gf floats on the surface of water. If the volume of block is 300cm³ the upthrust due to water is

Discussion

2239.	Given that mass of the earth is M and its radius is R.A body is dropped from a height equal to the radius of the earth above the surface of the earth. when it reaches the ground , its speed will be
Answer» Given that mass of the earth is M and its radius is R.A body is dropped from a height equal to the radius of the earth above the surface of the earth. when it reaches the ground , its speed will be

Discussion

2240.	Calculate the weight of one molecule of oxygen.(Avogadro's number = 6 × 1023, [O] = 16)
Answer» Calculate the weight of one molecule of oxygen. (Avogadro's number = 6 × 10²³, [O] = 16)

Discussion

2241.	Two rods A and B, of identical dimensions, are at a temperature of 30∘ C. If A is heated upto 180∘ C and B upto T∘ C, then their new lengths are the same. If the ratio of the coefficients of linear expansion of A and B is 4:3, the value of T is :
Answer» Two rods $A$ and $B$ , of identical dimensions, are at a temperature of $30^{\circ} C$ . If $A$ is heated upto $180^{\circ} C$ and $B$ upto $T^{\circ} C$ , then their new lengths are the same. If the ratio of the coefficients of linear expansion of $A$ and $B$ is $4 : 3$ , the value of $T$ is :

Discussion

2242.	A conductor depicted as AB is moving towards you, out of the plane, with two magnets kept as shown below. (G - galvanometer)Select the correct option regarding polarity of the magnets and the deflection of the galvanometer.
Answer» A conductor depicted as AB is moving towards you, out of the plane, with two magnets kept as shown below. (G - galvanometer) Select the correct option regarding polarity of the magnets and the deflection of the galvanometer.

Discussion

2243.	A particle moves a distance x in time t according to equation x=1/t+5.the acceleration of the particle is proportional to
Answer» A particle moves a distance x in time t according to equation x=1/t+5.the acceleration of the particle is proportional to

Discussion

2244.	When a body's weight is greater than the Buoyant force, the body sinks with an acceleration equal to ___
Answer» When a body's weight is greater than the Buoyant force, the body sinks with an acceleration equal to ___

Discussion

2245.	How much gravitational force acts between two people of mass 60 kg each sitting at distance of 1 m apart?
Answer» How much gravitational force acts between two people of mass 60 kg each sitting at distance of 1 m apart?

Discussion

2246.	a circular sheet of Aluminium is 55 cm and diameter at 15 degree Celsius by how much does the area of one side of the sheet changes when the temperature increases at 27.5 degree Celsius
Answer» a circular sheet of Aluminium is 55 cm and diameter at 15 degree Celsius by how much does the area of one side of the sheet changes when the temperature increases at 27.5 degree Celsius

Discussion

2247.	A body is orbiting around the earth at mean radius 16 times as great as the parking orbit of a satellite. The period of the body is: a)12 days b)64 days c)34 days d)44 days
Answer» A body is orbiting around the earth at mean radius 16 times as great as the parking orbit of a satellite. The period of the body is: a)12 days b)64 days c)34 days d)44 days

Discussion

2248.	The work done on a body is 250 J. If the force acting on the body in the direction of displacement during this interval is 12.5 N, the displacement of the body during this interval is ___ m.
Answer» The work done on a body is 250 J. If the force acting on the body in the direction of displacement during this interval is 12.5 N, the displacement of the body during this interval is ___ m.

Discussion

2249.	A boat carrying steel balls is floating on the surface of water in a †an k.If the balls are thrown into the the †an k one by one,how will it affect the level of water : (A)It will remain unchanged (B)It will rise (C)It will fall (D)First it will raise and then fall
Answer» A boat carrying steel balls is floating on the surface of water in a †an k.If the balls are thrown into the the †an k one by one,how will it affect the level of water : (A)It will remain unchanged (B)It will rise (C)It will fall (D)First it will raise and then fall

Discussion

2250.	What will be the ratio of:---1. frequency of first overtone of closed organ pipe and open organ pipe ?2. first harmonic of sound produced by closed organ pipe to open organ pipe ?
Answer» What will be the ratio of:--- 1. frequency of first overtone of closed organ pipe and open organ pipe ? 2. first harmonic of sound produced by closed organ pipe to open organ pipe ?

Discussion

Explore topic-wise InterviewSolutions in .

A stone is dropped from a cliff. Find its speed after the stone has fallen from 100 m. (Take g=9.8 ms−2).

An object experiences a net zero external force. Is it possible for the object to be traveling with non zero velocity. If yes, state the conditions that must be placed on the magnitude and direction of the velocity. If no provide a reason. I am not able to find it's answer

Can mass of a moving object change? Why?

From top of a tower, a ball a is dropped while ball b is projected horizontally. The time taken to reach the ground

if the buoyant force on an object depends on its volume V immersed in a liquid and the acceleration due to gravity g .The correct expression for F can be

The mass of a ball measured on earth is 5.0 kg. What will be the mass of the ball if it is taken on to the Moon?

heat of combustion of C2H4 is -337 kcal if 5.6 lit o2 is used at stp in the combustion heat liberated i

Which of the following do not comes under the category of the units?

What is second law of motion? explain?

a ball is projected vertically upwards at t=0 the ball is at same height at time 4s and 8s . The maximum height attained by the ball is (g=10 m/s^2)

Why are all combustible substances not considered fuels?

How principal quantum number determine energy of orbitals?

A bar magnet is broken in half and the two pieces are separated. Which of the following diagrams shows the magnetic field lines from the two pieces?​

A force F produces an acceleration 'a' in a body. The same force produces an acceleration 8a in another body. What is the mass of the body?

The unit of length,velocity, and force are doubled.which of the following is the correct change in the other change

Let’s assume I want to double the rate of a reaction. The constraint is that I can only increase the temperature by 10 K. Calculate the minimum activation energy required if the temperature is 300K.

The unit of time is : (a) light year (b) parsec (c) leap year (d) angstrom.

Find the maximum distance at which the human eye would be able to resolve the two headlights of a car which are at a distance of 1point 5 metres

What is the work done in moving a charge of 0.4 C across two points having a potential difference of 8 V?3.2

A body is projected with an initial velocity of 5i+12j.Its range is

A revolver of mass 500g fires a bullet of mass 10g with a speed of 100m/s. Find the initial momentum of revolver and bullet as a system.

4 During nh second of its motion a body cov-ers a distance S with uniform accelerationa' and initial velocity 'u. Show that a=2Sn-2u/2n-1

Explain why, the flash of lightning reaches us first and the sound of thunder is heard a little later.

In the circuit diagram given below. Find(i) Total resistance of the circuit(ii) Total current flowing in the circuit(iii) Potential difference across R14. Define one ohm.5. Define one ampere of current. [5 MARKS]

At a certain distance from a point charge, the field intensity is 500 V/m and the electric potential is −3000 V. Then the distance from charge is

a tunnel is made in earth along a chord at a height y from centre of earth. a particle released in a tunnel at a dis†an ce x from centre of tunnel. then describe motion of particle. if motion is SHM,find time period of SHM?(assume tunnel is smooth)

To what height should an object of mass 2kg be raised so that its potential energy is 980J?

A ship sends sonar and receives an echo after 2 seconds. If the speed of sound waves in water is 1500 m/s, then the depth of the sea is

Four equal resistors R each are connected to form a square ABCD, one in each side. If an electric potential V is applied between point A and B then current flowing out of B is

A mercury barometer has a column height of 76 cm. What will be the height of the column if the mercury is replaced with an oil having a density of 760 kg m−3? (Density of mercury is 13600 kg m−3)​

Question 12The weight of an object at the center of the earth of radius R is(a) zero(b) infinite(c) R times the weight at the surface of the earth(d) 1R2 times the weight at surface of the earth

The orbit along which the sun appears to move among the stars is called

What is frictional force ?

When F=ma then how mass and acceleration are inversly proportional to each other

A block of wood of weight 200gf floats on the surface of water. If the volume of block is 300cm³ the upthrust due to water is

Given that mass of the earth is M and its radius is R.A body is dropped from a height equal to the radius of the earth above the surface of the earth. when it reaches the ground , its speed will be

Calculate the weight of one molecule of oxygen.(Avogadro's number = 6 × 1023, [O] = 16)

Two rods A and B, of identical dimensions, are at a temperature of 30∘ C. If A is heated upto 180∘ C and B upto T∘ C, then their new lengths are the same. If the ratio of the coefficients of linear expansion of A and B is 4:3, the value of T is :

A conductor depicted as AB is moving towards you, out of the plane, with two magnets kept as shown below. (G - galvanometer)Select the correct option regarding polarity of the magnets and the deflection of the galvanometer.

A particle moves a distance x in time t according to equation x=1/t+5.the acceleration of the particle is proportional to

When a body's weight is greater than the Buoyant force, the body sinks with an acceleration equal to ___

How much gravitational force acts between two people of mass 60 kg each sitting at distance of 1 m apart?

a circular sheet of Aluminium is 55 cm and diameter at 15 degree Celsius by how much does the area of one side of the sheet changes when the temperature increases at 27.5 degree Celsius

A body is orbiting around the earth at mean radius 16 times as great as the parking orbit of a satellite. The period of the body is: a)12 days b)64 days c)34 days d)44 days

The work done on a body is 250 J. If the force acting on the body in the direction of displacement during this interval is 12.5 N, the displacement of the body during this interval is ___ m.

A boat carrying steel balls is floating on the surface of water in a †an k.If the balls are thrown into the the †an k one by one,how will it affect the level of water : (A)It will remain unchanged (B)It will rise (C)It will fall (D)First it will raise and then fall

What will be the ratio of:---1. frequency of first overtone of closed organ pipe and open organ pipe ?2. first harmonic of sound produced by closed organ pipe to open organ pipe ?

A bar magnet is broken in half and the two pieces are separated. Which of the following diagrams shows the magnetic field lines from the two pieces?

A mercury barometer has a column height of 76 cm. What will be the height of the column if the mercury is replaced with an oil having a density of 760 kg m−3? (Density of mercury is 13600 kg m−3)