6277 + Interview Questions in Physics Page 79 InterviewSolution

3901.	Choose the correct statement among the following: \vert Options: -Displacement is a scalar quantity -Displacement is always positive or zero -Displacement is dependent of the path followed by the moving object -The magnitude of displacement is always less than or equal to the distance travelled
Answer» Choose the correct statement among the following: \vert Options: -Displacement is a scalar quantity -Displacement is always positive or zero -Displacement is dependent of the path followed by the moving object -The magnitude of displacement is always less than or equal to the distance travelled

Discussion

3902.	The density of a material in CGS system of units is 4 g/cm3. In a system of units in which unit oflength is 10 cm and unit of mass is 100 g. thevalue of density of material will be
Answer» The density of a material in CGS system of units is 4 g/cm3. In a system of units in which unit oflength is 10 cm and unit of mass is 100 g. thevalue of density of material will be

Discussion

3903.	A body weighs 72 N on the surface of the Earth. What will be the force of gravity acting on the body at a height equal to half the radius of the Earth above the Earth's surface?
Answer» A body weighs $72 N$ on the surface of the Earth. What will be the force of gravity acting on the body at a height equal to half the radius of the Earth above the Earth's surface?

Discussion

3904.	What is the diameter of the observable universe in billion light years?
Answer» What is the diameter of the observable universe in billion light years?

Discussion

3905.	Question 15AB is a current carrying conductor in the plane of the paper as shown in Figure. What are the directions of magnetic fields produced by it at points P and Q? Given r1>r2, where will the strength of the magnetic field be larger?
Answer» Question 15 AB is a current carrying conductor in the plane of the paper as shown in Figure. What are the directions of magnetic fields produced by it at points P and Q? Given $r_{1} > r_{2}$ , where will the strength of the magnetic field be larger?

Discussion

3906.	25. A man walk 50 m towards East, then 40 m2towards North and then 20 m towards West.The magnitude of his displacement is(1) 40 m(3) 30 m(2) 50 m(4) 110 m
Answer» 25. A man walk 50 m towards East, then 40 m2towards North and then 20 m towards West.The magnitude of his displacement is(1) 40 m(3) 30 m(2) 50 m(4) 110 m

Discussion

3907.	Is vibratory motion and oscillatory motion same?
Answer» Is vibratory motion and oscillatory motion same?

Discussion

3908.	What is the total charge on 75 kg of electrons
Answer» What is the total charge on 75 kg of electrons

Discussion

3909.	Where and why are sound absorbing materials used?
Answer» Where and why are sound absorbing materials used?

Discussion

3910.	Question 5 Which of the following is not likely to cause tsunami?(a) A major nuclear explosion under sea(b) Earthquake (c) Volcanic eruption(d) Lightning
Answer» Question 5 Which of the following is not likely to cause tsunami? (a) A major nuclear explosion under sea (b) Earthquake (c) Volcanic eruption (d) Lightning

3910.

Question 5 Which of the following is not likely to cause tsunami?(a) A major nuclear explosion under sea(b) Earthquake (c) Volcanic eruption(d) Lightning

Answer»

Question 5

Which of the following is not likely to cause tsunami?

(a) A major nuclear explosion under sea

(b) Earthquake

(c) Volcanic eruption

(d) Lightning

Discussion

3911.	A shopkeeper wants to fix a mirror that shows him maximum view of his shop. What type of mirror should he use? Give reason.
Answer» A shopkeeper wants to fix a mirror that shows him maximum view of his shop. What type of mirror should he use? Give reason.

Discussion

3912.	20.In uniform magnetic field of induction be a wire in the form of semicircle of radius R rotates about the diameter of the circle with angular frequency Omega the axis of rotation is perpendicular to the magnetic field if the total resistance of the circuit isR
Answer» 20.In uniform magnetic field of induction be a wire in the form of semicircle of radius R rotates about the diameter of the circle with angular frequency Omega the axis of rotation is perpendicular to the magnetic field if the total resistance of the circuit isR

Discussion

3913.	Differentiate between convection and conduction? How is food cooked? [3 MARKS]
Answer» Differentiate between convection and conduction? How is food cooked? [3 MARKS]

Discussion

3914.	The number of independent elastic constant for a linear elastic isotropic and homogeneous material is
Answer» The number of independent elastic constant for a linear elastic isotropic and homogeneous material is

Discussion

3915.	In refrigerator, why are the freezer always locate at the top
Answer» In refrigerator, why are the freezer always locate at the top

Discussion

3916.	36 km/hr can be represented as:
Answer» 36 km/hr can be represented as:

Discussion

3917.	What minimum distance is required between the source of sound and the reflecting surface to hear the echo? Give reason.
Answer» What minimum distance is required between the source of sound and the reflecting surface to hear the echo? Give reason.

Discussion

3918.	Question 23The point which lies on y-axis at a distance of 5 units in the negative direction of y-axis isA) (0,5)B) (5,0)C) (0,-5)D) (-5,0)
Answer» Question 23 The point which lies on y-axis at a distance of 5 units in the negative direction of y-axis is A) (0,5) B) (5,0) C) (0,-5) D) (-5,0)

Discussion

3919.	Which mode of heat transfer takes place when the lower part of the pan gets heated up when kept on the burning stove
Answer» Which mode of heat transfer takes place when the lower part of the pan gets heated up when kept on the burning stove

Discussion

3920.	what is meaning of accelrate
Answer» what is meaning of accelrate

Discussion

3921.	What is the need of standard unit for measurements? [2 MARKS]
Answer» What is the need of standard unit for measurements? [2 MARKS]

Discussion

3922.	In a series LCR circuit R = 4 ohm, XL = 7 ohm and Xc = 4 ohm, E = 25 sin (100pi*t) volt-(a) Find heat developed in 80 seconds(b) Find wattless current
Answer» In a series LCR circuit R = 4 ohm, XL = 7 ohm and Xc = 4 ohm, E = 25 sin (100pi*t) volt- (a) Find heat developed in 80 seconds (b) Find wattless current

Discussion

3923.	Write three important properties of light.
Answer» Write three important properties of light.

Discussion

3924.	During the fusion of p and n type diodes to form on junction, why does the holes from p and electron from n accumulate to form the depletion region but not recombine with the majority charge carriers on the opposite side?
Answer» During the fusion of p and n type diodes to form on junction, why does the holes from p and electron from n accumulate to form the depletion region but not recombine with the majority charge carriers on the opposite side?

Discussion

3925.	If a preson moves 30m north , then 20 m east and then 30root2 m south west then what is its displacement?
Answer» If a preson moves 30m north , then 20 m east and then 30root2 m south west then what is its displacement?

Discussion

3926.	39.An object of mass M1 moving horizontally with speed I collided elastically with another object of mass M2 at rest select the correct statement (1) The momentum of system is conserved only in direction PQ (2) Momentum of M1 is conserved in direction perpendicular to SR (3) Momentum of M2 will change in direction normal to CR (4) All of these
Answer» 39.An object of mass M1 moving horizontally with speed I collided elastically with another object of mass M2 at rest select the correct statement (1) The momentum of system is conserved only in direction PQ (2) Momentum of M1 is conserved in direction perpendicular to SR (3) Momentum of M2 will change in direction normal to CR (4) All of these

Discussion

3927.	why does a thin wire curl when an extrmly high current passes through it ?
Answer» why does a thin wire curl when an extrmly high current passes through it ?

Discussion

3928.	Mirror image of after reflection is .
Answer» Mirror image of after reflection is .

Discussion

3929.	If a balloon filled with air and its mouth untied, is released with its mouth in the downward direction, it moves upwards. Why?
Answer» If a balloon filled with air and its mouth untied, is released with its mouth in the downward direction, it moves upwards. Why?

Discussion

3930.	Which of the following materials is a good conductor of electricity?
Answer» Which of the following materials is a good conductor of electricity?

Discussion

3931.	When the positive terminals are connected together and the negative terminals are connected together, the connection is known as a ___ connection.
Answer» When the positive terminals are connected together and the negative terminals are connected together, the connection is known as a ___ connection.

Discussion

3932.	110.A non uniform rod is rotating about an axis passing through point O and perpendicular to the rod with angular speed ω. If linear mass density at a distance x from O is λ = cx where c is a constant then find kinetic energy of the rod .
Answer» 110.A non uniform rod is rotating about an axis passing through point O and perpendicular to the rod with angular speed ω. If linear mass density at a distance x from O is λ = cx where c is a constant then find kinetic energy of the rod .

Discussion

3933.	Which of the following device is responsible for attracting the striker?
Answer» Which of the following device is responsible for attracting the striker?

Discussion

3934.	what is kineytic friction
Answer» what is kineytic friction

Discussion

3935.	Why is the colour of water always blue. Why not any other colour?
Answer» Why is the colour of water always blue. Why not any other colour?

Discussion

3936.	Why work is consider as scalar quantity?
Answer» Why work is consider as scalar quantity?

Discussion

3937.	How many cubes of length 3 cm can be made from the cubical wood piece of length 30 cm.
Answer» How many cubes of length 3 cm can be made from the cubical wood piece of length 30 cm.

Discussion

3938.	An incident ray makes an angle of 30o with the surface of plane mirror. What is the angle between incident ray and reflected ray?
Answer» An incident ray makes an angle of $30^{o}$ with the surface of plane mirror. What is the angle between incident ray and reflected ray?

Discussion

3939.	Any 5 practical units of (length,mass and time)
Answer» Any 5 practical units of (length,mass and time)

Discussion

3940.	Which type of mirrors are used in the following?Periscope, floodlights, shaving mirror, kaleidoscope, street lights, headlamps of a car.
Answer» Which type of mirrors are used in the following? Periscope, floodlights, shaving mirror, kaleidoscope, street lights, headlamps of a car.

Discussion

3941.	When two bodies A and B are brought in contact with each other, heat flows from A to B, then . (A and B have temperature TA and TB respectively)
Answer» When two bodies A and B are brought in contact with each other, heat flows from A to B, then . (A and B have temperature $T_{A} a n d T_{B}$ respectively)

Discussion

3942.	A train travels 40 km at a uniform speed of 30 kmph. Its average speed after travelling another 40 km is 45 kmph for the whole journey. Its speed in the second half of the journey is
Answer» A train travels 40 km at a uniform speed of 30 kmph. Its average speed after travelling another 40 km is 45 kmph for the whole journey. Its speed in the second half of the journey is

Discussion

3943.	If you know the direction of flow of current, can you say all the electrons are going only in that direction at any point of time?
Answer» If you know the direction of flow of current, can you say all the electrons are going only in that direction at any point of time?

Discussion

3944.	What is the principle/relation that is being used in the take-off of aeroplanes?
Answer» What is the principle/relation that is being used in the take-off of aeroplanes?

Discussion

3945.	What is a resistor and what does it do?
Answer» What is a resistor and what does it do?

Discussion

3946.	Why does black color absorb hear better than any other color? Explain.
Answer» Why does black color absorb hear better than any other color? Explain.

Discussion

3947.	Does the prism creates the seven colours? If yes, then how does it produces? If no, then how is the band of colours obtained?
Answer» Does the prism creates the seven colours? If yes, then how does it produces? If no, then how is the band of colours obtained?

Discussion

3948.	Which of the following is/are the characteristic(s) of an object in circular motion?
Answer» Which of the following is/are the characteristic(s) of an object in circular motion?

Discussion

3949.	When light or we can say the white light is passed through a triangular prism, ___colour light will bent the least.
Answer» When light or we can say the white light is passed through a triangular prism, ___colour light will bent the least.

Discussion

3950.	Why is concave mirror is used for make up
Answer» Why is concave mirror is used for make up

Discussion

Explore topic-wise InterviewSolutions in .

Choose the correct statement among the following: \vert Options: -Displacement is a scalar quantity -Displacement is always positive or zero -Displacement is dependent of the path followed by the moving object -The magnitude of displacement is always less than or equal to the distance travelled

The density of a material in CGS system of units is 4 g/cm3. In a system of units in which unit oflength is 10 cm and unit of mass is 100 g. thevalue of density of material will be

A body weighs 72 N on the surface of the Earth. What will be the force of gravity acting on the body at a height equal to half the radius of the Earth above the Earth's surface?

What is the diameter of the observable universe in billion light years?

Question 15AB is a current carrying conductor in the plane of the paper as shown in Figure. What are the directions of magnetic fields produced by it at points P and Q? Given r1&gt;r2, where will the strength of the magnetic field be larger?

25. A man walk 50 m towards East, then 40 m2towards North and then 20 m towards West.The magnitude of his displacement is(1) 40 m(3) 30 m(2) 50 m(4) 110 m

Is vibratory motion and oscillatory motion same?

What is the total charge on 75 kg of electrons

Where and why are sound absorbing materials used?

Question 5 Which of the following is not likely to cause tsunami?(a) A major nuclear explosion under sea(b) Earthquake (c) Volcanic eruption(d) Lightning

A shopkeeper wants to fix a mirror that shows him maximum view of his shop. What type of mirror should he use? Give reason.

20.In uniform magnetic field of induction be a wire in the form of semicircle of radius R rotates about the diameter of the circle with angular frequency Omega the axis of rotation is perpendicular to the magnetic field if the total resistance of the circuit isR

Differentiate between convection and conduction? How is food cooked? [3 MARKS]

The number of independent elastic constant for a linear elastic isotropic and homogeneous material is

In refrigerator, why are the freezer always locate at the top

36 km/hr can be represented as:

What minimum distance is required between the source of sound and the reflecting surface to hear the echo? Give reason.

Question 23The point which lies on y-axis at a distance of 5 units in the negative direction of y-axis isA) (0,5)B) (5,0)C) (0,-5)D) (-5,0)

Which mode of heat transfer takes place when the lower part of the pan gets heated up when kept on the burning stove

what is meaning of accelrate

What is the need of standard unit for measurements? [2 MARKS]

In a series LCR circuit R = 4 ohm, XL = 7 ohm and Xc = 4 ohm, E = 25 sin (100pi*t) volt-(a) Find heat developed in 80 seconds(b) Find wattless current

Write three important properties of light.

During the fusion of p and n type diodes to form on junction, why does the holes from p and electron from n accumulate to form the depletion region but not recombine with the majority charge carriers on the opposite side?

If a preson moves 30m north , then 20 m east and then 30root2 m south west then what is its displacement?

why does a thin wire curl when an extrmly high current passes through it ?

Mirror image of after reflection is .

If a balloon filled with air and its mouth untied, is released with its mouth in the downward direction, it moves upwards. Why?

Which of the following materials is a good conductor of electricity?

When the positive terminals are connected together and the negative terminals are connected together, the connection is known as a ___ connection.

110.A non uniform rod is rotating about an axis passing through point O and perpendicular to the rod with angular speed ω. If linear mass density at a distance x from O is λ = cx where c is a constant then find kinetic energy of the rod .

Which of the following device is responsible for attracting the striker?

what is kineytic friction

Why is the colour of water always blue. Why not any other colour?

Why work is consider as scalar quantity?

How many cubes of length 3 cm can be made from the cubical wood piece of length 30 cm.

An incident ray makes an angle of 30o with the surface of plane mirror. What is the angle between incident ray and reflected ray?

Any 5 practical units of (length,mass and time)

Which type of mirrors are used in the following?Periscope, floodlights, shaving mirror, kaleidoscope, street lights, headlamps of a car.

When two bodies A and B are brought in contact with each other, heat flows from A to B, then . (A and B have temperature TA and TB respectively)

A train travels 40 km at a uniform speed of 30 kmph. Its average speed after travelling another 40 km is 45 kmph for the whole journey. Its speed in the second half of the journey is

If you know the direction of flow of current, can you say all the electrons are going only in that direction at any point of time?

What is the principle/relation that is being used in the take-off of aeroplanes?

What is a resistor and what does it do?

Why does black color absorb hear better than any other color? Explain.

Does the prism creates the seven colours? If yes, then how does it produces? If no, then how is the band of colours obtained?

Which of the following is/are the characteristic(s) of an object in circular motion?

When light or we can say the white light is passed through a triangular prism, ___colour light will bent the least.

Why is concave mirror is used for make up

Question 15AB is a current carrying conductor in the plane of the paper as shown in Figure. What are the directions of magnetic fields produced by it at points P and Q? Given r1>r2, where will the strength of the magnetic field be larger?