9478 + Interview Questions in Physics Page 99 InterviewSolution

4901.	A steel section shown in figure is subjected to a shear force of 200 kN. The maximum shear stress developed is __________ MPa
Answer» A steel section shown in figure is subjected to a shear force of 200 kN. The maximum shear stress developed is __________ MPa

Discussion

4902.	During lightning, which of the following occurs?
Answer» During lightning, which of the following occurs?

Discussion

4903.	Two charges of value 2mC and -50mC are placed 80cm apart. Calculate the distance of the point from the smaller charge where the intensity is zero
Answer» Two charges of value 2mC and -50mC are placed 80cm apart. Calculate the distance of the point from the smaller charge where the intensity is zero

Discussion

4904.	two fixed solid spheres of masses 9M and M and radius R each are separated by 36R (distance between their centres) as shown . a point mass is placed at null point . with what minimum speed it need to be projected such that it escapes the field of the spheres
Answer» two fixed solid spheres of masses 9M and M and radius R each are separated by 36R (distance between their centres) as shown . a point mass is placed at null point . with what minimum speed it need to be projected such that it escapes the field of the spheres

Discussion

4905.	Name the sound producing organ in humans.
Answer» Name the sound producing organ in humans.

Discussion

4906.	There are 3 friends A, B & C. A is planning to deceive B by imitating the voice of C, but B catches A in his mischief. Which of the following factors makes the sounds different?
Answer» There are 3 friends A, B & C. A is planning to deceive B by imitating the voice of C, but B catches A in his mischief. Which of the following factors makes the sounds different?

Discussion

4907.	Select the safe measure(s) to be taken to protect ourselves against lightning strike.
Answer» Select the safe measure(s) to be taken to protect ourselves against lightning strike.

Discussion

4908.	A defect of eye which results when the lens loses its transparency:
Answer» A defect of eye which results when the lens loses its transparency:

Discussion

4909.	Question 31Describe the working of an AC generator with the help of a labelled circuit diagram. What changes must be made in the arrangement to convert it to a DC generator?
Answer» Question 31 Describe the working of an AC generator with the help of a labelled circuit diagram. What changes must be made in the arrangement to convert it to a DC generator?

Discussion

4910.	Search and you will find.a. Our galaxy is called..................b. For measuring large distances.................... is used as a unit.c. The speed of light is .................. km/sd. There are about ................ stars in our galaxy.e. The end stage of the sun will be .....................f. Stars are born out of ............... clouds.g. Milky way is a .............. galaxy.h. Stars are spheres of ................. gas.i. The masses of other stars are measured relative to the mass of the ..................j. Light takes ........................... to reach us from the moon.k. The larger the mass of a star the faster is its.................l. The number of fuels used in the life of a star depends on its .......................
Answer» Search and you will find. a. Our galaxy is called.................. b. For measuring large distances.................... is used as a unit. c. The speed of light is .................. km/s d. There are about ................ stars in our galaxy. e. The end stage of the sun will be ..................... f. Stars are born out of ............... clouds. g. Milky way is a .............. galaxy. h. Stars are spheres of ................. gas. i. The masses of other stars are measured relative to the mass of the .................. j. Light takes ........................... to reach us from the moon. k. The larger the mass of a star the faster is its................. l. The number of fuels used in the life of a star depends on its .......................

Discussion

4911.	State (a) the melting point of ice and (b) the boiling point of water.
Answer» State (a) the melting point of ice and (b) the boiling point of water.

4911.

State (a) the melting point of ice and (b) the boiling point of water.

Answer»

State

(a) the melting point of ice and (b) the boiling point of water.

Discussion

4912.	What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.
Answer» What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.

Discussion

4913.	In Khedi village what all did children learn? What do you learn from your elders? Jatrya learnt so many things in Khedi. How many of those would be useful for him in Mumbai? Do you hear the sounds of birds every day? Which ones? Can you imitate the sound of any bird? Show how. What are some of the sounds that you hear everyday, but the people of Khedi may not be hearing? Have you experienced silence? When and where?
Answer» In Khedi village what all did children learn? What do you learn from your elders? Jatrya learnt so many things in Khedi. How many of those would be useful for him in Mumbai? Do you hear the sounds of birds every day? Which ones? Can you imitate the sound of any bird? Show how. What are some of the sounds that you hear everyday, but the people of Khedi may not be hearing? Have you experienced silence? When and where?

Discussion

4914.	How do airbags reduce damage to the passenger during the accident?
Answer» How do airbags reduce damage to the passenger during the accident?

Discussion

4915.	What is the acceleration of a van that starts from rest and attains a velocity of 20 m/s in 25 seconds?
Answer» What is the acceleration of a van that starts from rest and attains a velocity of $20 m / s$ in $25$ seconds?

Discussion

4916.	(a) What is lightning? How is lightning produced between clouds in the sky? (b) Why does lightning usually strike tall buildings? (c) What damage can be done when lightning strikes on the earth?
Answer» (a) What is lightning? How is lightning produced between clouds in the sky? (b) Why does lightning usually strike tall buildings? (c) What damage can be done when lightning strikes on the earth?

4916.

(a) What is lightning? How is lightning produced between clouds in the sky? (b) Why does lightning usually strike tall buildings? (c) What damage can be done when lightning strikes on the earth?

Answer»

(a) What is lightning? How is lightning produced between clouds in the sky?

(b) Why does lightning usually strike tall buildings?

(c) What damage can be done when lightning strikes on the earth?

Discussion

4917.	two equal spheres are identically charged with q units of electricity seperately . when they are placed at a dis†an ce 3R from center to center where R is th radius of either of the sphere the force of repulsion between them is
Answer» two equal spheres are identically charged with q units of electricity seperately . when they are placed at a dis†an ce 3R from center to center where R is th radius of either of the sphere the force of repulsion between them is

Discussion

4918.	How to represent simple harmonic motion in a circle.With its each element
Answer» How to represent simple harmonic motion in a circle.With its each element

Discussion

4919.	A level measuring instrument is used to measure the level of oil in an oil industry. The measured level is then converted to digital data by using 8-bit ADC to store it in computer. The following block diagram is used for entire process.The relation given, oil level and the output of level instrument is directly proportional.The digital output corresponding to 10m oil level is
Answer» A level measuring instrument is used to measure the level of oil in an oil industry. The measured level is then converted to digital data by using 8-bit ADC to store it in computer. The following block diagram is used for entire process. The relation given, oil level and the output of level instrument is directly proportional. The digital output corresponding to 10m oil level is

Discussion

4920.	Question 3 (a) Fill in the blanks in the following statements: (a) To draw water from a well we have to ___ at the rope.
Answer» Question 3 (a) Fill in the blanks in the following statements: (a) To draw water from a well we have to ___ at the rope.

Discussion

4921.	Which of the following statements is not true?
Answer» Which of the following statements is not true?

Discussion

4922.	A force of 5 N is applied on a body over a surface area of 5 m2. Calculate the pressure applied on the surface.
Answer» A force of $5 N$ is applied on a body over a surface area of 5 $m^{2}$ . Calculate the pressure applied on the surface.

Discussion

4923.	A ray of light is traveling parallel to the principal axis. After reflection, which of the following paths will the ray take?
Answer» A ray of light is traveling parallel to the principal axis. After reflection, which of the following paths will the ray take?

4923.

A ray of light is traveling parallel to the principal axis. After reflection, which of the following paths will the ray take?

Answer»

A ray of light is traveling parallel to the principal axis. After reflection, which of the following paths will the ray take?

Discussion

4924.	3.For depositing 1 g of an element in a voltmeter 3 A current for 4 minutes is required. To deposit same mass a current of 8 A will be required for 1. 1 minute 2. 2 minute 3. 1.5 minute 4. 3 minute
Answer» 3.For depositing 1 g of an element in a voltmeter 3 A current for 4 minutes is required. To deposit same mass a current of 8 A will be required for 1. 1 minute 2. 2 minute 3. 1.5 minute 4. 3 minute

Discussion

4925.	Why liquid falls down word if we do a hole in it?
Answer» Why liquid falls down word if we do a hole in it?

Discussion

4926.	Describe how the distance from Earth affects the invisible pull.
Answer» Describe how the distance from Earth affects the invisible pull.

Discussion

4927.	What are 27 nakshatras?
Answer» What are 27 nakshatras?

Discussion

4928.	Answer for 3(3z-5)-5(2z-1)=4(2z-3)-17
Answer» Answer for 3(3z-5)-5(2z-1)=4(2z-3)-17

4928.

Answer for 3(3z-5)-5(2z-1)=4(2z-3)-17

Answer»

Answer for

3(3z-5)-5(2z-1)=4(2z-3)-17

Discussion

4929.	7. Two electrolytic cells one containing acidified ferrous chloride and another acidified ferric chloride are connected in series. The ratio of iron deposited at cathodes in the two cells when electricity is passed through the cells will be
Answer» 7. Two electrolytic cells one containing acidified ferrous chloride and another acidified ferric chloride are connected in series. The ratio of iron deposited at cathodes in the two cells when electricity is passed through the cells will be

Discussion

4930.	Which of the following measurement is more accurate A) 40mB) 0.4mC) 400×10^-4mD)4×10^1mAnd why ??
Answer» Which of the following measurement is more accurate A) 40m B) 0.4m C) 400×10^-4m D)4×10^1m And why ??

Discussion

4931.	Which organisation was responsible for excluding Pluto from the Sun's planet list?
Answer» Which organisation was responsible for excluding Pluto from the Sun's planet list?

Discussion

4932.	What are acids? [1 MARK]
Answer» What are acids? [1 MARK]

Discussion

4933.	List three states in India where earthquakes are more likely to strike.
Answer» List three states in India where earthquakes are more likely to strike.

Discussion

4934.	Suppose that you use carbon rod as a cathode will a coating of copper be obtained now?
Answer» Suppose that you use carbon rod as a cathode will a coating of copper be obtained now?

Discussion

4935.	Two identical cubes A and B are placed in a tank containing a liquid as shown below. Choose the correct statement regarding pressures exerted on them.
Answer» Two identical cubes A and B are placed in a tank containing a liquid as shown below. Choose the correct statement regarding pressures exerted on them.

Discussion

4936.	Question 9Two blocks of iron of different masses are kept on a cemented floor as shown in the figure. Which one of them would require a larger force to move it from the rest position?
Answer» Question 9 Two blocks of iron of different masses are kept on a cemented floor as shown in the figure. Which one of them would require a larger force to move it from the rest position?

Discussion

4937.	The positively charged ions are called and the negative ones are called anion. But why the electrodes used in electrolysis have opposite signs, i.e.the electrode having positive sign is known as anode while, the negative electrode is known as cathode?
Answer» The positively charged ions are called and the negative ones are called anion. But why the electrodes used in electrolysis have opposite signs, i.e.the electrode having positive sign is known as anode while, the negative electrode is known as cathode?

Discussion

4938.	What is the audible range of frequencies for human beings?
Answer» What is the audible range of frequencies for human beings?

Discussion

4939.	what is the gravitational field intensity of a particle at the surface of the earth and at a point which is 10 km inside the earth?
Answer» what is the gravitational field intensity of a particle at the surface of the earth and at a point which is 10 km inside the earth?

Discussion

4940.	A rod is brought near an uncharged pith ball electroscope. What conclusion do you draw about the charge on the rod if the pith ball does not move :
Answer» A rod is brought near an uncharged pith ball electroscope. What conclusion do you draw about the charge on the rod if the pith ball does not move :

Discussion

4941.	What is electricity
Answer» What is electricity

Discussion

4942.	a container contains cl2 gas at cons†an t temperature and pressure which diasociated according to following reaction . cl2= 2cl. and xenon gas kept in another container in the identical conditions with the mixture . if both mixture and xenon gas are effuses from the identixal holes in the identical conditions . if the mixture effuses 1.41 tmes faster than xenon . find out percentage dissociation of cl2.
Answer» a container contains cl2 gas at cons†an t temperature and pressure which diasociated according to following reaction . cl2= 2cl. and xenon gas kept in another container in the identical conditions with the mixture . if both mixture and xenon gas are effuses from the identixal holes in the identical conditions . if the mixture effuses 1.41 tmes faster than xenon . find out percentage dissociation of cl2.

Discussion

4943.	In solids and liquids the speed of sound is more because it is more difficult to compress them as compared to gasses. But how does this helps in icreasing the speed of sound propagation in these two mediums?
Answer» In solids and liquids the speed of sound is more because it is more difficult to compress them as compared to gasses. But how does this helps in icreasing the speed of sound propagation in these two mediums?

Discussion

4944.	Does gold decompose?
Answer» Does gold decompose?

Discussion

4945.	Question 10 (v)State whether the following statement is ‘True’ or ‘False’The planet Venus appears in the eastern sky before sunrise.
Answer» Question 10 (v) State whether the following statement is ‘True’ or ‘False’ The planet Venus appears in the eastern sky before sunrise.

Discussion

4946.	A spherical tungsten piece of radius 1 cm is suspended in an evacuated chamber maintained at 300 K. The piece is maintained at 1000 K by heating it electrically. Find the rate at which the electrical energy must be supplied. The emissivity of tungsten is 0.30 and the stefan constant, σ=6.0×10−8 Wm−2 K−4
Answer» A spherical tungsten piece of radius $1 cm$ is suspended in an evacuated chamber maintained at $300 K$ . The piece is maintained at $1000 K$ by heating it electrically. Find the rate at which the electrical energy must be supplied. The emissivity of tungsten is $0.30$ and the stefan constant, $σ = 6.0 \times 10^{- 8} {Wm}^{- 2} K^{- 4}$

Discussion

4947.	A person having a whistle, emitting continuously a sound of frequency 660 Hz. While producing this sound he is running towards a vertical wall with a speed of 5m/s. If the speed of sound in air is 335m/s then number of beats heard by him area) 20Hzb) 10 Hzc) 8 Hzd) zero
Answer» A person having a whistle, emitting continuously a sound of frequency 660 Hz. While producing this sound he is running towards a vertical wall with a speed of 5m/s. If the speed of sound in air is 335m/s then number of beats heard by him are a) 20Hz b) 10 Hz c) 8 Hz d) zero

Discussion

4948.	Which of the following are the effects of the force?
Answer» Which of the following are the effects of the force?

Discussion

4949.	The measured values of mass, length, breadth and thickness of a rectangular block are 39.3g, 5.12 cm, 2.56 cm and 0.37 cm respectively. Find the maximum permissible percentage error in the determination of the density of the material of the block.
Answer» The measured values of mass, length, breadth and thickness of a rectangular block are 39.3g, 5.12 cm, 2.56 cm and 0.37 cm respectively. Find the maximum permissible percentage error in the determination of the density of the material of the block.

Discussion

4950.	Two identical strings X and Z made of same material have tension TX and TZ in them. If their fundamental frequencies are 450 Hz and 300 Hz, respectively, then the ratio TXTZ is:
Answer» Two identical strings $X$ and $Z$ made of same material have tension $T_{X} and T_{Z}$ in them. If their fundamental frequencies are $450 Hz$ and $300 Hz$ , respectively, then the ratio $\frac{T_{X}}{T_{Z}}$ is:

Discussion

Explore topic-wise InterviewSolutions in .

A steel section shown in figure is subjected to a shear force of 200 kN. The maximum shear stress developed is __________ MPa

During lightning, which of the following occurs?

Two charges of value 2mC and -50mC are placed 80cm apart. Calculate the distance of the point from the smaller charge where the intensity is zero

two fixed solid spheres of masses 9M and M and radius R each are separated by 36R (distance between their centres) as shown . a point mass is placed at null point . with what minimum speed it need to be projected such that it escapes the field of the spheres

Name the sound producing organ in humans.

There are 3 friends A, B &amp; C. A is planning to deceive B by imitating the voice of C, but B catches A in his mischief. Which of the following factors makes the sounds different?

Select the safe measure(s) to be taken to protect ourselves against lightning strike.

A defect of eye which results when the lens loses its transparency:

Question 31Describe the working of an AC generator with the help of a labelled circuit diagram. What changes must be made in the arrangement to convert it to a DC generator?

State (a) the melting point of ice and (b) the boiling point of water.

What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.

How do airbags reduce damage to the passenger during the accident?

What is the acceleration of a van that starts from rest and attains a velocity of 20 m/s in 25 seconds?

(a) What is lightning? How is lightning produced between clouds in the sky? (b) Why does lightning usually strike tall buildings? (c) What damage can be done when lightning strikes on the earth?

two equal spheres are identically charged with q units of electricity seperately . when they are placed at a dis†an ce 3R from center to center where R is th radius of either of the sphere the force of repulsion between them is

How to represent simple harmonic motion in a circle.With its each element

Question 3 (a) Fill in the blanks in the following statements: (a) To draw water from a well we have to ___ at the rope.

Which of the following statements is not true?

A force of 5 N is applied on a body over a surface area of 5 m2. Calculate the pressure applied on the surface.

A ray of light is traveling parallel to the principal axis. After reflection, which of the following paths will the ray take?

3.For depositing 1 g of an element in a voltmeter 3 A current for 4 minutes is required. To deposit same mass a current of 8 A will be required for 1. 1 minute 2. 2 minute 3. 1.5 minute 4. 3 minute

Why liquid falls down word if we do a hole in it?

Describe how the distance from Earth affects the invisible pull.

What are 27 nakshatras?

Answer for 3(3z-5)-5(2z-1)=4(2z-3)-17

7. Two electrolytic cells one containing acidified ferrous chloride and another acidified ferric chloride are connected in series. The ratio of iron deposited at cathodes in the two cells when electricity is passed through the cells will be

Which of the following measurement is more accurate A) 40mB) 0.4mC) 400×10^-4mD)4×10^1mAnd why ??

Which organisation was responsible for excluding Pluto from the Sun's planet list?

What are acids? [1 MARK]

List three states in India where earthquakes are more likely to strike.

Suppose that you use carbon rod as a cathode will a coating of copper be obtained now?

Two identical cubes A and B are placed in a tank containing a liquid as shown below. Choose the correct statement regarding pressures exerted on them.

Question 9Two blocks of iron of different masses are kept on a cemented floor as shown in the figure. Which one of them would require a larger force to move it from the rest position?

The positively charged ions are called and the negative ones are called anion. But why the electrodes used in electrolysis have opposite signs, i.e.the electrode having positive sign is known as anode while, the negative electrode is known as cathode?

What is the audible range of frequencies for human beings?

what is the gravitational field intensity of a particle at the surface of the earth and at a point which is 10 km inside the earth?

A rod is brought near an uncharged pith ball electroscope. What conclusion do you draw about the charge on the rod if the pith ball does not move :

What is electricity

In solids and liquids the speed of sound is more because it is more difficult to compress them as compared to gasses. But how does this helps in icreasing the speed of sound propagation in these two mediums?

Does gold decompose?

Question 10 (v)State whether the following statement is ‘True’ or ‘False’The planet Venus appears in the eastern sky before sunrise.

A person having a whistle, emitting continuously a sound of frequency 660 Hz. While producing this sound he is running towards a vertical wall with a speed of 5m/s. If the speed of sound in air is 335m/s then number of beats heard by him area) 20Hzb) 10 Hzc) 8 Hzd) zero

Which of the following are the effects of the force?

The measured values of mass, length, breadth and thickness of a rectangular block are 39.3g, 5.12 cm, 2.56 cm and 0.37 cm respectively. Find the maximum permissible percentage error in the determination of the density of the material of the block.

Two identical strings X and Z made of same material have tension TX and TZ in them. If their fundamental frequencies are 450 Hz and 300 Hz, respectively, then the ratio TXTZ is:

There are 3 friends A, B & C. A is planning to deceive B by imitating the voice of C, but B catches A in his mischief. Which of the following factors makes the sounds different?