6277 + Interview Questions in Physics Page 35 InterviewSolution

1701.	A force applied on an area of 0.5 m2 causes a pressure of 250 Pa. What was the force applied?
Answer» A force applied on an area of 0.5 $m^{2}$ causes a pressure of 250 Pa. What was the force applied?

Discussion

1702.	I am preparing to make a project on this topic so I want a summary noted to this topic so please
Answer» I am preparing to make a project on this topic so I want a summary noted to this topic so please

Discussion

1703.	The image formed by a rear view mirror _____.
Answer» The image formed by a rear view mirror _____.

Discussion

1704.	The vapour pressure of ethanol and methanol are 42.0 mm and 88.5 mm Hg respectively. An ideal solution is formed at the same temperature by mixing 46.0 g of ethanol with 16.0 g of methanol. The mole fraction of methanol in the vapour is:
Answer» The vapour pressure of ethanol and methanol are $42.0 mm$ and $88.5 mm Hg$ respectively. An ideal solution is formed at the same temperature by mixing $46.0 g$ of ethanol with $16.0 g$ of methanol. The mole fraction of methanol in the vapour is:

Discussion

1705.	Weight is the measurement of ___ force.
Answer» Weight is the measurement of ___ force.

Discussion

1706.	What parts of speech are the underlined words? Running can put pressure on the joints and the ligaments of your legs. The young sprinter was running along the tracks.
Answer» What parts of speech are the underlined words? Running can put pressure on the joints and the ligaments of your legs. The young sprinter was running along the tracks.

1706.

What parts of speech are the underlined words? Running can put pressure on the joints and the ligaments of your legs. The young sprinter was running along the tracks.

Answer»

What parts of speech are the underlined words?

Running can put pressure on the joints and the ligaments of your legs.

The young sprinter was running along the tracks.

Discussion

1707.	A block of mass m is given a speed u, up an incline plane (with μ=0.5). Its speed when it reaches the top of inclined plane is (1) \sqrt{u^2-gh} (2) \sqrt{u^2-2gh} (3) \sqrt{u^2-3gh} (4) \sqrt{u^2-4gh}
Answer» A block of mass m is given a speed u, up an incline plane (with μ=0.5). Its speed when it reaches the top of inclined plane is (1) \sqrt{u^2-gh} (2) \sqrt{u^2-2gh} (3) \sqrt{u^2-3gh} (4) \sqrt{u^2-4gh}

Discussion

1708.	The line through the points (h, 3) and (4, 1) intersects the line 7x- 9y -19 = 0 at right angle. Find the value of h.
Answer» The line through the points (h, 3) and (4, 1) intersects the line 7x- 9y -19 = 0 at right angle. Find the value of h.

Discussion

1709.	A 50 N force is applied on an area of 2 m2. Compute the pressure.
Answer» A $50 N$ force is applied on an area of $2 m^{2}$ . Compute the pressure.

Discussion

1710.	43.Two short magnets have equal pole strength but one is twice as long as the other. The shorter magnet is placed at 20 cm in tanA position from the compass needle. The longer magnet must be placed on the other side of the magnetometer for no deflection at a distance equal to. 1. 20(2)^1/3 cm 2. 20(2)^2/3 cm . 3. 40 cm 4. 20 cm.
Answer» 43.Two short magnets have equal pole strength but one is twice as long as the other. The shorter magnet is placed at 20 cm in tanA position from the compass needle. The longer magnet must be placed on the other side of the magnetometer for no deflection at a distance equal to. 1. 20(2)^1/3 cm 2. 20(2)^2/3 cm . 3. 40 cm 4. 20 cm.

Discussion

1711.	Mass of an object remains same irrespective of the surroundings.Give reason.Why?
Answer» Mass of an object remains same irrespective of the surroundings.Give reason.Why?

Discussion

1712.	If work done by the system is 300J when 100cal heat is supplied to it. Find the change in d internal energy during the process.
Answer» If work done by the system is 300J when 100cal heat is supplied to it. Find the change in d internal energy during the process.

Discussion

1713.	if three block A,B and C are of mass m1 m2 m3 repectively a force of 60 newton is applied to block A the what is the contqct force between B C and AB
Answer» if three block A,B and C are of mass m1 m2 m3 repectively a force of 60 newton is applied to block A the what is the contqct force between B C and AB

Discussion

1714.	Identify the given image:
Answer» Identify the given image:

1714.

Identify the given image:

Answer»

Identify the given image:

Discussion

1715.	Name the largest planet of the solar system.
Answer» Name the largest planet of the solar system.

Discussion

1716.	What are convection currens ?
Answer» What are convection currens ?

Discussion

1717.	A simple pendulum with bob of mass m and lenght x is held in position at an angle \varnothing1 and then angle \varnothing2 with the vertical. when released from these positions, speeds with which it passes the lowest positions are v1 and v2 respectively. then v1/v2 is?
Answer» A simple pendulum with bob of mass m and lenght x is held in position at an angle \varnothing1 and then angle \varnothing2 with the vertical. when released from these positions, speeds with which it passes the lowest positions are v1 and v2 respectively. then v1/v2 is?

Discussion

1718.	40. When ether is exposed to air for some time, the substance produced is? Also explain the mechanism
Answer» 40. When ether is exposed to air for some time, the substance produced is? Also explain the mechanism

Discussion

1719.	The following precautions were listed for the experiment on the determination of the melting point of ice. The incorrect precaution is :(1) The bulb of the thermometer should be kept surrounded with crushed ice.(2) Ice should be stirred regularly to keep a uniform temperature throughout.(3) The final temperature should be noted by keeping the eyes in line with the level of mercury.(4) Only the tip of the bulb of the thermometer should just touch the crushed ice.
Answer» The following precautions were listed for the experiment on the determination of the melting point of ice. The incorrect precaution is : (1) The bulb of the thermometer should be kept surrounded with crushed ice. (2) Ice should be stirred regularly to keep a uniform temperature throughout. (3) The final temperature should be noted by keeping the eyes in line with the level of mercury. (4) Only the tip of the bulb of the thermometer should just touch the crushed ice.

Discussion

1720.	2.2 charges of +20micro C and - 20 micro C are placed 0.35 cm apart potential at the centre of the line joining the 2 charges is
Answer» 2.2 charges of +20micro C and - 20 micro C are placed 0.35 cm apart potential at the centre of the line joining the 2 charges is

Discussion

1721.	Which of the following can be shadows of the cylinder?
Answer» Which of the following can be shadows of the cylinder?

Discussion

1722.	Joe was holding a long bending pipe and he was trying to see the candle but he could not. What must be the shape of the pipe so that he can see the candle?
Answer» Joe was holding a long bending pipe and he was trying to see the candle but he could not. What must be the shape of the pipe so that he can see the candle?

1722.

Joe was holding a long bending pipe and he was trying to see the candle but he could not. What must be the shape of the pipe so that he can see the candle?

Answer»

Joe was holding a long bending pipe and he was trying to see the candle but he could not. What must be the shape of the pipe so that he can see the candle?

Discussion

1723.	What would you use to measure the mass difference between two same sized objects?
Answer» What would you use to measure the mass difference between two same sized objects?

Discussion

1724.	Why is it difficult to read the image of the text of a page formed due to reflection by a plane mirror?
Answer» Why is it difficult to read the image of the text of a page formed due to reflection by a plane mirror?

Discussion

1725.	11) A vessel contains oil (density 0.8 g cm ) over mercury (density 13.6 g cm). A homogeneous sphere floats with half volume immersed in mercury and the other half in oil. The density of the material of the sphere i
Answer» 11) A vessel contains oil (density 0.8 g cm ) over mercury (density 13.6 g cm). A homogeneous sphere floats with half volume immersed in mercury and the other half in oil. The density of the material of the sphere i

Discussion

1726.	What colour of light is obtained when we combine the seven colours of a rainbow?
Answer» What colour of light is obtained when we combine the seven colours of a rainbow?

Discussion

1727.	A body is projected vertically up. At certain height h above the ground, its potential energy and kinetic energy are in ratio 1:4. At what height above the ground, potential energy and kinetic energy will be in the ratio 4:1
Answer» A body is projected vertically up. At certain height h above the ground, its potential energy and kinetic energy are in ratio 1:4. At what height above the ground, potential energy and kinetic energy will be in the ratio 4:1

Discussion

1728.	A: A parrot is flying in sky. it sits on a stretched Telegraph wire weight of parrot is W, then tension T produced in a wire is T>W R: 2Tcos = W, As =/2 (approx)
Answer» A: A parrot is flying in sky. it sits on a stretched Telegraph wire weight of parrot is W, then tension T produced in a wire is T>W R: 2Tcos = W, As =/2 (approx)

Discussion

1729.	97. Consider the following statements about PSLV C-35 i) It successfully launched 20 satellites into the orbit. ii) It launched satellites into two different orbits in a single PSLV flight. iii) SCATSAT – 1, launched through PSLV C-35 is to be used for forecasting cyclones and other phenomena. Which of the above statements is/are not correct?
Answer» 97. Consider the following statements about PSLV C-35 i) It successfully launched 20 satellites into the orbit. ii) It launched satellites into two different orbits in a single PSLV flight. iii) SCATSAT – 1, launched through PSLV C-35 is to be used for forecasting cyclones and other phenomena. Which of the above statements is/are not correct?

1729.

97. Consider the following statements about PSLV C-35 i) It successfully launched 20 satellites into the orbit. ii) It launched satellites into two different orbits in a single PSLV flight. iii) SCATSAT – 1, launched through PSLV C-35 is to be used for forecasting cyclones and other phenomena. Which of the above statements is/are not correct?

Answer»

97. Consider the following statements about PSLV C-35

i) It successfully launched 20 satellites into the orbit.

ii) It launched satellites into two different orbits in a single PSLV flight.

iii) SCATSAT – 1, launched through PSLV C-35 is to be used for forecasting cyclones and other phenomena.

Which of the above statements is/are not correct?

Discussion

1730.	Two rectangular sheets of paper each 30 cm × 18 cm are made into two right circular cylinders, one by rolling the paper along its length and the other along the breadth. The ratio of the volumes of the two cylinders, thus formed, is _________.
Answer» Two rectangular sheets of paper each 30 cm × 18 cm are made into two right circular cylinders, one by rolling the paper along its length and the other along the breadth. The ratio of the volumes of the two cylinders, thus formed, is _________.

Discussion

1731.	Why is the temperature in space and on Earth different?
Answer» Why is the temperature in space and on Earth different?

Discussion

1732.	In which of the following, is the transfer of heat by convection currents impossible.
Answer» In which of the following, is the transfer of heat by convection currents impossible.

Discussion

1733.	Mercury is used in thermometers to measure temperature because:
Answer» Mercury is used in thermometers to measure temperature because:

Discussion

1734.	three negatively charged faces the charge of 4 into 10 to the power minus 6 coulomb bar fixed at the vertices of equilateral triangle whose sides are 20 cm long . Calculate magnitude and direction of net electric force on each of the spheres
Answer» three negatively charged faces the charge of 4 into 10 to the power minus 6 coulomb bar fixed at the vertices of equilateral triangle whose sides are 20 cm long . Calculate magnitude and direction of net electric force on each of the spheres

Discussion

1735.	What is fuel? [1 MARK]
Answer» What is fuel? [1 MARK]

Discussion

1736.	To expel hot air out of the kitchen, ‘A’ has an exhaust fan fitted on the window of her kitchen and ‘B’ has a similar exhaust fan fitted on the wall near the ceiling of her kitchen. Which of the exhaust fan will expel the hot air more effectively? Explain why? [3 MARKS]
Answer» To expel hot air out of the kitchen, ‘A’ has an exhaust fan fitted on the window of her kitchen and ‘B’ has a similar exhaust fan fitted on the wall near the ceiling of her kitchen. Which of the exhaust fan will expel the hot air more effectively? Explain why? [3 MARKS]

Discussion

1737.	16.Two slits in Y.D.S.E are 0.02 cm apart.The interference fringes for light 6000 angstorm are formed on screen 80 cm apart.Find the distance of seventh dark fringe from the centre of the screen.
Answer» 16.Two slits in Y.D.S.E are 0.02 cm apart.The interference fringes for light 6000 angstorm are formed on screen 80 cm apart.Find the distance of seventh dark fringe from the centre of the screen.

Discussion

1738.	What is the freezing point of water?
Answer» What is the freezing point of water?

Discussion

1739.	When we are inserting the battery into our devices, then we have to match + and - signs with the respective electrodes correctly. True
Answer» When we are inserting the battery into our devices, then we have to match + and - signs with the respective electrodes correctly. True

1739.

When we are inserting the battery into our devices, then we have to match + and - signs with the respective electrodes correctly. True

Answer»

When we are inserting the battery into our devices, then we have to match + and - signs with the respective electrodes correctly.

True

Discussion

1740.	identical charges (-q) are placed o cube o side b then electrostatic potential energy o charge(+q) which is placed at centre o the cube will be
Answer» identical charges (-q) are placed o cube o side b then electrostatic potential energy o charge(+q) which is placed at centre o the cube will be

Discussion

1741.	In which of the following case(s) will the bulb glow?
Answer» In which of the following case(s) will the bulb glow?

Discussion

1742.	Sir, Does the density of an object changes it's volume?
Answer» Sir, Does the density of an object changes it's volume?

1742.

Sir, Does the density of an object changes it's volume?

Answer»

Sir,

Does the density of an object changes it's volume?

Discussion

1743.	For solids with elastic modulus of rigidity, the shearing force is proportionalto shear strain, while for fluids it is proportional to rate of shearstrain why?
Answer» For solids with elastic modulus of rigidity, the shearing force is proportional to shear strain, while for fluids it is proportional to rate of shear strain why?

Discussion

1744.	What is an insulator? What kind of substances work as conductors? [3 MARKS]
Answer» What is an insulator? What kind of substances work as conductors? [3 MARKS]

Discussion

1745.	What is the focal length of plane mirror? [1 MARKS]
Answer» What is the focal length of plane mirror? [1 MARKS]

Discussion

1746.	87.Explain the effect of pressure change on equilibria of the chemical reaction.
Answer» 87.Explain the effect of pressure change on equilibria of the chemical reaction.

Discussion

1747.	17. Calculate the equilibrium constant for the reaction (Fe2+) + (Ce4+) ---> (Fe3+) + (Ce3+). Given E^° ce4+/Ce3+ =1.44V & E^° fe3+/Fe2+= 0.68V
Answer» 17. Calculate the equilibrium constant for the reaction (Fe2+) + (Ce4+) ---> (Fe3+) + (Ce3+). Given E^° ce4+/Ce3+ =1.44V & E^° fe3+/Fe2+= 0.68V

Discussion

1748.	Four equal resistahce dissipated 5 W of powertogether when connected in series to a battery ofnegligible internal resistance. The total powerdissipated in these resistance when connected inparallel across the same battery would be(1) 125 Ww(3) 20 VW(2) 80 W(4) 5 W
Answer» Four equal resistahce dissipated 5 W of powertogether when connected in series to a battery ofnegligible internal resistance. The total powerdissipated in these resistance when connected inparallel across the same battery would be(1) 125 Ww(3) 20 VW(2) 80 W(4) 5 W

Discussion

1749.	What is terminal voltage?
Answer» What is terminal voltage?

Discussion

1750.	Question 05Describe an activity to show that the incident ray, the reflected ray and the normal at the point of incidence lie in the same plane.
Answer» Question 05 Describe an activity to show that the incident ray, the reflected ray and the normal at the point of incidence lie in the same plane.

Discussion

Explore topic-wise InterviewSolutions in .

A force applied on an area of 0.5 m2 causes a pressure of 250 Pa. What was the force applied?

I am preparing to make a project on this topic so I want a summary noted to this topic so please

The image formed by a rear view mirror _____.

The vapour pressure of ethanol and methanol are 42.0 mm and 88.5 mm Hg respectively. An ideal solution is formed at the same temperature by mixing 46.0 g of ethanol with 16.0 g of methanol. The mole fraction of methanol in the vapour is:

Weight is the measurement of ___ force.

What parts of speech are the underlined words? Running can put pressure on the joints and the ligaments of your legs. The young sprinter was running along the tracks.

A block of mass m is given a speed u, up an incline plane (with μ=0.5). Its speed when it reaches the top of inclined plane is (1) \sqrt{u^2-gh} (2) \sqrt{u^2-2gh} (3) \sqrt{u^2-3gh} (4) \sqrt{u^2-4gh}

The line through the points (h, 3) and (4, 1) intersects the line 7x- 9y -19 = 0 at right angle. Find the value of h.

A 50 N force is applied on an area of 2 m2. Compute the pressure.

Mass of an object remains same irrespective of the surroundings.Give reason.Why?

If work done by the system is 300J when 100cal heat is supplied to it. Find the change in d internal energy during the process.

if three block A,B and C are of mass m1 m2 m3 repectively a force of 60 newton is applied to block A the what is the contqct force between B C and AB

Identify the given image:

Name the largest planet of the solar system.

What are convection currens ?

A simple pendulum with bob of mass m and lenght x is held in position at an angle \varnothing1 and then angle \varnothing2 with the vertical. when released from these positions, speeds with which it passes the lowest positions are v1 and v2 respectively. then v1/v2 is?

40. When ether is exposed to air for some time, the substance produced is? Also explain the mechanism

2.2 charges of +20micro C and - 20 micro C are placed 0.35 cm apart potential at the centre of the line joining the 2 charges is

Which of the following can be shadows of the cylinder?

Joe was holding a long bending pipe and he was trying to see the candle but he could not. What must be the shape of the pipe so that he can see the candle?

What would you use to measure the mass difference between two same sized objects?

Why is it difficult to read the image of the text of a page formed due to reflection by a plane mirror?

11) A vessel contains oil (density 0.8 g cm ) over mercury (density 13.6 g cm). A homogeneous sphere floats with half volume immersed in mercury and the other half in oil. The density of the material of the sphere i

What colour of light is obtained when we combine the seven colours of a rainbow?

A body is projected vertically up. At certain height h above the ground, its potential energy and kinetic energy are in ratio 1:4. At what height above the ground, potential energy and kinetic energy will be in the ratio 4:1

A: A parrot is flying in sky. it sits on a stretched Telegraph wire weight of parrot is W, then tension T produced in a wire is T>W R: 2Tcos = W, As =/2 (approx)

Two rectangular sheets of paper each 30 cm × 18 cm are made into two right circular cylinders, one by rolling the paper along its length and the other along the breadth. The ratio of the volumes of the two cylinders, thus formed, is _________.

Why is the temperature in space and on Earth different?

In which of the following, is the transfer of heat by convection currents impossible.

Mercury is used in thermometers to measure temperature because:

three negatively charged faces the charge of 4 into 10 to the power minus 6 coulomb bar fixed at the vertices of equilateral triangle whose sides are 20 cm long . Calculate magnitude and direction of net electric force on each of the spheres

What is fuel? [1 MARK]

To expel hot air out of the kitchen, ‘A’ has an exhaust fan fitted on the window of her kitchen and ‘B’ has a similar exhaust fan fitted on the wall near the ceiling of her kitchen. Which of the exhaust fan will expel the hot air more effectively? Explain why? [3 MARKS]

16.Two slits in Y.D.S.E are 0.02 cm apart.The interference fringes for light 6000 angstorm are formed on screen 80 cm apart.Find the distance of seventh dark fringe from the centre of the screen.

What is the freezing point of water?

When we are inserting the battery into our devices, then we have to match + and - signs with the respective electrodes correctly. True

identical charges (-q) are placed o cube o side b then electrostatic potential energy o charge(+q) which is placed at centre o the cube will be

In which of the following case(s) will the bulb glow?

Sir, Does the density of an object changes it's volume?

For solids with elastic modulus of rigidity, the shearing force is proportionalto shear strain, while for fluids it is proportional to rate of shearstrain why?

What is an insulator? What kind of substances work as conductors? [3 MARKS]

What is the focal length of plane mirror? [1 MARKS]

87.Explain the effect of pressure change on equilibria of the chemical reaction.

17. Calculate the equilibrium constant for the reaction (Fe2+) + (Ce4+) ---> (Fe3+) + (Ce3+). Given E^° ce4+/Ce3+ =1.44V & E^° fe3+/Fe2+= 0.68V

Four equal resistahce dissipated 5 W of powertogether when connected in series to a battery ofnegligible internal resistance. The total powerdissipated in these resistance when connected inparallel across the same battery would be(1) 125 Ww(3) 20 VW(2) 80 W(4) 5 W

What is terminal voltage?

Question 05Describe an activity to show that the incident ray, the reflected ray and the normal at the point of incidence lie in the same plane.