3752 + Interview Questions in Physics Page 40 InterviewSolution

1951.	39. The contact force between two bodies of mass 1 kg and 2kg is placed on a smooth inclined plane and angle of inclination of plane is 60 degree
Answer» 39. The contact force between two bodies of mass 1 kg and 2kg is placed on a smooth inclined plane and angle of inclination of plane is 60 degree

Discussion

1952.

Match the following : A B (a) machine (1) chemical energy (b) winding up clockwork (2) kinetic energy (c) digestion, excretion (3) mechanical energy (d) rolling object (4) physical energy (e) wood (5) potential energy

Answer»

Match the following :

A		B
(a)	machine		(1)	chemical energy
(b)	winding up clockwork		(2)	kinetic energy
(c)	digestion, excretion		(3)	mechanical energy
(d)	rolling object		(4)	physical energy
(e)	wood		(5)	potential energy

Discussion

1953.	___________ allows current to pass through it
Answer» ___________ allows current to pass through it

Discussion

1954.	(1)16A force F is applied at the topmost point of blockof mass M. The force required to topple the blockbefore sliding is (u coefficient of friction)(3)
Answer» (1)16A force F is applied at the topmost point of blockof mass M. The force required to topple the blockbefore sliding is (u coefficient of friction)(3)

Discussion

1955.	Why do meteor showers fall during predictable periods each year?
Answer» Why do meteor showers fall during predictable periods each year?

Discussion

1956.	In an electric torch, electric energy is converted into(a) light energy.(b) heat energy.(c) sound energy.(d) both light and heat energy
Answer» In an electric torch, electric energy is converted into (a) light energy. (b) heat energy. (c) sound energy. (d) both light and heat energy

Discussion

1957.	What does the underlined preposition indicate? Use these scissors for cutting.
Answer» What does the underlined preposition indicate? Use these scissors for cutting.

1957.

What does the underlined preposition indicate? Use these scissors for cutting.

Answer»

What does the underlined preposition indicate?

Use these scissors for cutting.

Discussion

1958.	Shadows appear to be black in color. Which of the following reasons attribute to this?
Answer» Shadows appear to be black in color. Which of the following reasons attribute to this?

Discussion

1959.	Choose an appropriate word and fill in the blanks.(a) A ........... is a natural source of light.(b) A ......... is an artificial source of light.(c) When light passes through a prism, it gets separated into ....... colours.(d) The image obtained in the pinhole camera is ......... .(e) A shadow is formed when an ........... object comes in the way of light.(f) When a ........... object comes in the way of light, light passes ......... it.(options : seven, star, through, transparent, opaque, colors, shape, erect, inverted, luminous, candle)
Answer» Choose an appropriate word and fill in the blanks. (a) A ........... is a natural source of light. (b) A ......... is an artificial source of light. (c) When light passes through a prism, it gets separated into ....... colours. (d) The image obtained in the pinhole camera is ......... . (e) A shadow is formed when an ........... object comes in the way of light. (f) When a ........... object comes in the way of light, light passes ......... it. (options : seven, star, through, transparent, opaque, colors, shape, erect, inverted, luminous, candle)

Discussion

1960.	Standard unit to measure area of an object is .
Answer» Standard unit to measure area of an object is .

Discussion

1961.	Is magnitude only the numerical value or numerical value+unit
Answer» Is magnitude only the numerical value or numerical value+unit

Discussion

1962.	A car moving with a speed of 108km/h on a straight road decreases t{s speed uniformly to 90km/h in 5 seconds. The displacement of the car in the last second of its motion is
Answer» A car moving with a speed of 108km/h on a straight road decreases t{s speed uniformly to 90km/h in 5 seconds. The displacement of the car in the last second of its motion is

Discussion

1963.	निम्नलिखित प्रश्न का उत्तर एक-दो पंक्तियों में दीजिए −दोपहर के भोजन को कौन-सी गरिमा प्रदान की गई?
Answer» निम्नलिखित प्रश्न का उत्तर एक-दो पंक्तियों में दीजिए − दोपहर के भोजन को कौन-सी गरिमा प्रदान की गई?

1963.

निम्नलिखित प्रश्न का उत्तर एक-दो पंक्तियों में दीजिए −दोपहर के भोजन को कौन-सी गरिमा प्रदान की गई?

Answer»

निम्नलिखित प्रश्न का उत्तर एक-दो पंक्तियों में दीजिए −

दोपहर के भोजन को कौन-सी गरिमा प्रदान की गई?

Discussion

1964.	Like poles __________ and unlike poles ___________ each other.
Answer» Like poles __________ and unlike poles ___________ each other.

Discussion

1965.	Can a luminous object in a dark room cast a shadow? Justify your answer.
Answer» Can a luminous object in a dark room cast a shadow? Justify your answer.

Discussion

1966.	As we increase the temperature, the kinetic energy of the particles ____.
Answer» As we increase the temperature, the kinetic energy of the particles ____.

Discussion

1967.	The motion of the drill head that is being used to make a hole in a wooden plank is an example of:
Answer» The motion of the drill head that is being used to make a hole in a wooden plank is an example of:

Discussion

1968.	Write the diference between force of friction and gravitational force?
Answer» Write the diference between force of friction and gravitational force?

Discussion

1969.	Which of the following should be used to lift a heavy steel cupboard to the fourth floor of the building?
Answer» Which of the following should be used to lift a heavy steel cupboard to the fourth floor of the building?

Discussion

1970.	Which kind of lever are the kitchen tongs?
Answer» Which kind of lever are the kitchen tongs?

Discussion

1971.	1000 cubic metres = ________ Litres
Answer» $1000 c u b i c m e t r e s$ = ________ $L i t r e s$

Discussion

1972.	Rajesh measures the length of a box to be 30 cm using a scale that has a broken left end. The actual length of the box is 29 cm. What is the zero error?1
Answer» Rajesh measures the length of a box to be $30 c m$ using a scale that has a broken left end. The actual length of the box is $29 c m$ . What is the zero error? 1

Discussion

1973.	what is magnetic field due to long hollow cylineder?
Answer» what is magnetic field due to long hollow cylineder?

Discussion

1974.	82.An open tank containing non viscous liquid to a height of 5 m over the ground. A heavy spherical ball falls from height 40 m above the ground in tank . ignoring air resistance find the height to which ball will go back. Collision between ball and bottom of tank is perfectly elastic
Answer» 82.An open tank containing non viscous liquid to a height of 5 m over the ground. A heavy spherical ball falls from height 40 m above the ground in tank . ignoring air resistance find the height to which ball will go back. Collision between ball and bottom of tank is perfectly elastic

Discussion

1975.	Calculate the weight of an astronaut whose mass is 80kg on the surface of the earth and on the surface of moon. Given that acceleration due to gravity at moon is 1/6 weight on Earth?
Answer» Calculate the weight of an astronaut whose mass is 80kg on the surface of the earth and on the surface of moon. Given that acceleration due to gravity at moon is 1/6 weight on Earth?

Discussion

1976.	A ring is made of a wire having Resis†an ce 12 ohm . Find the points A and B at which a current carrying conductor should be connected so that the resis†an ce R of the sub circuit between these points is equal to 8/3 ohm .
Answer» A ring is made of a wire having Resis†an ce 12 ohm . Find the points A and B at which a current carrying conductor should be connected so that the resis†an ce R of the sub circuit between these points is equal to 8/3 ohm .

Discussion

1977.	Which device is use to lift up or more heavy object using less force ?
Answer» Which device is use to lift up or more heavy object using less force ?

Discussion

1978.	19.Find the value of current in the circuit:
Answer» 19.Find the value of current in the circuit:

Discussion

1979.	One end of an iron bar is attracted and the other end is repelled by the north pole of a bar magnet. Can you definitely say that the iron bar is a magnet? If both ends are attracted by the north pole, what would be your conclusion?
Answer» One end of an iron bar is attracted and the other end is repelled by the north pole of a bar magnet. Can you definitely say that the iron bar is a magnet? If both ends are attracted by the north pole, what would be your conclusion?

Discussion

1980.	To melt ice to water at −30∘C do we need to increase or decrease pressure? According to Boyle's law.
Answer» To melt ice to water at $- 30^{\circ} C$ do we need to increase or decrease pressure? According to Boyle's law.

Discussion

1981.	Why is Venus called the Morning and the Evening Star?
Answer» Why is Venus called the Morning and the Evening Star?

Discussion

1982.	Tap on the correct tile to complete the following floor.
Answer» Tap on the correct tile to complete the following floor.

Discussion

1983.	A car takes 4 hours to travel a distance of 320 km. What is its average speed for the journey?
Answer» A car takes 4 hours to travel a distance of 320 km. What is its average speed for the journey?

Discussion

1984.	What kinds of motion does an oscillating pedestal fan have?
Answer» What kinds of motion does an oscillating pedestal fan have?

Discussion

1985.	What is the difference between muscular force and mechanical force?
Answer» What is the difference between muscular force and mechanical force?

Discussion

1986.	Draw a flow diagram showing the steps required to separate different gases from air.
Answer» Draw a flow diagram showing the steps required to separate different gases from air.

Discussion

1987.	(क) तुम अपनी कक्षा में जब पहले दिन आए थे तो उस दिन क्या-क्या हुआ था? अपनी याद से अपने अनुभव को दस वाक्यों में लिखकर दिखाओ। (ख) तुम चाहो तो 'पहला दिन' शीर्षक पर कुछ पंक्तियों की कोई कविता भी लिखकर दिखा सकते हो।
Answer» (क) तुम अपनी कक्षा में जब पहले दिन आए थे तो उस दिन क्या-क्या हुआ था? अपनी याद से अपने अनुभव को दस वाक्यों में लिखकर दिखाओ। (ख) तुम चाहो तो 'पहला दिन' शीर्षक पर कुछ पंक्तियों की कोई कविता भी लिखकर दिखा सकते हो।

1987.

(क) तुम अपनी कक्षा में जब पहले दिन आए थे तो उस दिन क्या-क्या हुआ था? अपनी याद से अपने अनुभव को दस वाक्यों में लिखकर दिखाओ। (ख) तुम चाहो तो 'पहला दिन' शीर्षक पर कुछ पंक्तियों की कोई कविता भी लिखकर दिखा सकते हो।

Answer»

(क) तुम अपनी कक्षा में जब पहले दिन आए थे तो उस दिन क्या-क्या हुआ था? अपनी याद से अपने अनुभव को दस वाक्यों में लिखकर दिखाओ।

(ख) तुम चाहो तो 'पहला दिन' शीर्षक पर कुछ पंक्तियों की कोई कविता भी लिखकर दिखा सकते हो।

Discussion

1988.	What is random motion? Give one example.
Answer» What is random motion? Give one example.

Discussion

1989.	A footstep cannot be used as a standard unit of length, why?
Answer» A footstep cannot be used as a standard unit of length, why?

Discussion

1990.	If a bar magnet is cut lengthwise into two parts, how many numbers of poles will be formed?
Answer» If a bar magnet is cut lengthwise into two parts, how many numbers of poles will be formed?

Discussion

1991.	Applying oil on door hinges ___ friction.
Answer» Applying oil on door hinges ___ friction.

Discussion

1992.	While measuring the length of paper, the reading of the scale at initial point is 1.0 cm and at the final point is 8.9 cm. What is the length of paper?
Answer» While measuring the length of paper, the reading of the scale at initial point is $1.0 c m$ and at the final point is $8.9 c m$ . What is the length of paper?

Discussion

1993.	how much energy is released when 2 mole of U235 is fissione
Answer» how much energy is released when 2 mole of U235 is fissione

Discussion

1994.	What is the potential energy stored in a spring when it is neither compressed nor elongated?
Answer» What is the potential energy stored in a spring when it is neither compressed nor elongated?

Discussion

1995.	Four point charges q, –2q, –q and 2q are placed at points (0 , 0, 0) m, (√ 2 , 0, 0) m, (√ 2 , √ 2 , 0) m and (0 , √ 2 , 0) m respectively. The electric field at point (1/√ 2 , 1/√ 2 ,0) m is (q = 1 μC)
Answer» Four point charges q, –2q, –q and 2q are placed at points (0 , 0, 0) m, (√ 2 , 0, 0) m, (√ 2 , √ 2 , 0) m and (0 , √ 2 , 0) m respectively. The electric field at point (1/√ 2 , 1/√ 2 ,0) m is (q = 1 μC)

Discussion

1996.	why do 2 magnets attract or repel each othe
Answer» why do 2 magnets attract or repel each othe

Discussion

1997.	When iron filings are spread on a piece of paper and a bar magnet is kept below the paper, the filings ___.
Answer» When iron filings are spread on a piece of paper and a bar magnet is kept below the paper, the filings ___.

Discussion

1998.	Determine the required velocity ratio for a machine whose effort distance is 3 times that of load distance.
Answer» Determine the required velocity ratio for a machine whose effort distance is 3 times that of load distance.

Discussion

1999.	A force of 10 N making an angle 30^° with positive x-axis acts on a 2 kg block moving in xy plane. Work done by the object as it moves from origin to the point having position vector(2i-4j) is
Answer» A force of 10 N making an angle 30^° with positive x-axis acts on a 2 kg block moving in xy plane. Work done by the object as it moves from origin to the point having position vector(2i-4j) is

Discussion

2000.	What is a machine? Explain the differences between simple and complex machines.
Answer» What is a machine? Explain the differences between simple and complex machines.

Discussion

Explore topic-wise InterviewSolutions in .

39. The contact force between two bodies of mass 1 kg and 2kg is placed on a smooth inclined plane and angle of inclination of plane is 60 degree

Match the following : A B (a) machine (1) chemical energy (b) winding up clockwork (2) kinetic energy (c) digestion, excretion (3) mechanical energy (d) rolling object (4) physical energy (e) wood (5) potential energy

___________ allows current to pass through it

(1)16A force F is applied at the topmost point of blockof mass M. The force required to topple the blockbefore sliding is (u coefficient of friction)(3)

Why do meteor showers fall during predictable periods each year?

In an electric torch, electric energy is converted into(a) light energy.(b) heat energy.(c) sound energy.(d) both light and heat energy

What does the underlined preposition indicate? Use these scissors for cutting.

Shadows appear to be black in color. Which of the following reasons attribute to this?

Standard unit to measure area of an object is .

Is magnitude only the numerical value or numerical value+unit

A car moving with a speed of 108km/h on a straight road decreases t{s speed uniformly to 90km/h in 5 seconds. The displacement of the car in the last second of its motion is

निम्नलिखित प्रश्न का उत्तर एक-दो पंक्तियों में दीजिए −दोपहर के भोजन को कौन-सी गरिमा प्रदान की गई?

Like poles __________ and unlike poles ___________ each other.

Can a luminous object in a dark room cast a shadow? Justify your answer.

As we increase the temperature, the kinetic energy of the particles ____.

The motion of the drill head that is being used to make a hole in a wooden plank is an example of:

Write the diference between force of friction and gravitational force?

Which of the following should be used to lift a heavy steel cupboard to the fourth floor of the building?

Which kind of lever are the kitchen tongs?

1000 cubic metres = ________ Litres

Rajesh measures the length of a box to be 30 cm using a scale that has a broken left end. The actual length of the box is 29 cm. What is the zero error?1

what is magnetic field due to long hollow cylineder?

82.An open tank containing non viscous liquid to a height of 5 m over the ground. A heavy spherical ball falls from height 40 m above the ground in tank . ignoring air resistance find the height to which ball will go back. Collision between ball and bottom of tank is perfectly elastic

Calculate the weight of an astronaut whose mass is 80kg on the surface of the earth and on the surface of moon. Given that acceleration due to gravity at moon is 1/6 weight on Earth?

A ring is made of a wire having Resis†an ce 12 ohm . Find the points A and B at which a current carrying conductor should be connected so that the resis†an ce R of the sub circuit between these points is equal to 8/3 ohm .

Which device is use to lift up or more heavy object using less force ?

19.Find the value of current in the circuit:

One end of an iron bar is attracted and the other end is repelled by the north pole of a bar magnet. Can you definitely say that the iron bar is a magnet? If both ends are attracted by the north pole, what would be your conclusion?

To melt ice to water at −30∘C do we need to increase or decrease pressure? According to Boyle's law.

Why is Venus called the Morning and the Evening Star?

Tap on the correct tile to complete the following floor.

A car takes 4 hours to travel a distance of 320 km. What is its average speed for the journey?

What kinds of motion does an oscillating pedestal fan have?

What is the difference between muscular force and mechanical force?

Draw a flow diagram showing the steps required to separate different gases from air.

What is random motion? Give one example.

A footstep cannot be used as a standard unit of length, why?

If a bar magnet is cut lengthwise into two parts, how many numbers of poles will be formed?

Applying oil on door hinges ___ friction.

While measuring the length of paper, the reading of the scale at initial point is 1.0 cm and at the final point is 8.9 cm. What is the length of paper?

how much energy is released when 2 mole of U235 is fissione

What is the potential energy stored in a spring when it is neither compressed nor elongated?

Four point charges q, –2q, –q and 2q are placed at points (0 , 0, 0) m, (√ 2 , 0, 0) m, (√ 2 , √ 2 , 0) m and (0 , √ 2 , 0) m respectively. The electric field at point (1/√ 2 , 1/√ 2 ,0) m is (q = 1 μC)

why do 2 magnets attract or repel each othe

When iron filings are spread on a piece of paper and a bar magnet is kept below the paper, the filings ___.

Determine the required velocity ratio for a machine whose effort distance is 3 times that of load distance.

A force of 10 N making an angle 30^° with positive x-axis acts on a 2 kg block moving in xy plane. Work done by the object as it moves from origin to the point having position vector(2i-4j) is

What is a machine? Explain the differences between simple and complex machines.

Like poles and unlike poles _ each other.