9478 + Interview Questions in Physics Page 186 InterviewSolution

9251.	State Pascal's law. Give a simple experiment to demonstrate this law.
Answer» State Pascal's law. Give a simple experiment to demonstrate this law.

Discussion

9252.	Two resistances R1 and R2 give a combined resistance of 4.5 Ω when in series and 1 Ω when in parallel. The value of resistances are___________.
Answer» Two resistances $R_{1}$ and $R_{2}$ give a combined resistance of 4.5 $Ω$ when in series and 1 $Ω$ when in parallel. The value of resistances are___________.

Discussion

9253.	_________are stretched across the voice box or larynx in such a way that it leaves a narrow slit between them for the passage of air.
Answer» _________are stretched across the voice box or larynx in such a way that it leaves a narrow slit between them for the passage of air.

Discussion

9254.	Choose the correct statements: Statement 1: We see objects when light emitted from luminous objects enters our eyes. Statement 2: We see objects when light reflected from the non-luminous objects enters our eyes. Statement 3: Eyes alone cannot see an object. Statement 4: Eyes emit light rays in all direction.
Answer» Choose the correct statements: Statement 1: We see objects when light emitted from luminous objects enters our eyes. Statement 2: We see objects when light reflected from the non-luminous objects enters our eyes. Statement 3: Eyes alone cannot see an object. Statement 4: Eyes emit light rays in all direction.

9254.

Choose the correct statements: Statement 1: We see objects when light emitted from luminous objects enters our eyes. Statement 2: We see objects when light reflected from the non-luminous objects enters our eyes. Statement 3: Eyes alone cannot see an object. Statement 4: Eyes emit light rays in all direction.

Answer»

Choose the correct statements:

Statement 1: We see objects when light emitted from luminous objects enters our eyes.

Statement 2: We see objects when light reflected from the non-luminous objects enters our eyes.

Statement 3: Eyes alone cannot see an object.

Statement 4: Eyes emit light rays in all direction.

Discussion

9255.	A cube of side 0.2 m rest on the floor . Given that the cube has a mass of 50 kg. The pressure exerted by the cube on the floor is? (Take g=10N/kg)
Answer» A cube of side 0.2 m rest on the floor . Given that the cube has a mass of 50 kg. The pressure exerted by the cube on the floor is? (Take $g = 10 N / k g$ )

9255.

A cube of side 0.2 m rest on the floor . Given that the cube has a mass of 50 kg. The pressure exerted by the cube on the floor is? (Take g=10N/kg)

Answer»

A cube of side 0.2 m rest on the floor . Given that the cube has a mass of 50 kg. The pressure exerted by the cube on the floor is?

(Take $g = 10 N / k g$ )

Discussion

9256.	A source is producing 15 waves in 3 seconds. The distance between a crest and t trough is 10 cm. Find the velocity of the wave?
Answer» A source is producing 15 waves in 3 seconds. The distance between a crest and t trough is 10 cm. Find the velocity of the wave?

Discussion

9257.	What do you think the rollers do in skating shoes?
Answer» What do you think the rollers do in skating shoes?

Discussion

9258.	Why refraction will happen to the light if it changes it's medium?
Answer» Why refraction will happen to the light if it changes it's medium?

Discussion

9259.	In properties of electric charge There it is written that electric charge is quantised and the quantam of charge is equal to an electron Q=be What is that mean
Answer» In properties of electric charge There it is written that electric charge is quantised and the quantam of charge is equal to an electron Q=be What is that mean

Discussion

9260.	Explain why, when an object is placed between two plane mirrors inclined at an angle, then multiple images are formed.
Answer» Explain why, when an object is placed between two plane mirrors inclined at an angle, then multiple images are formed.

Discussion

9261.	What are the characteristics same for both waves given in the fig (1) and fig (2).
Answer» What are the characteristics same for both waves given in the fig (1) and fig (2).

9261.

What are the characteristics same for both waves given in the fig (1) and fig (2).

Answer»

What are the characteristics same for both waves given in the fig (1) and fig (2).

Discussion

9262.	What is the difference between a note and a tone?
Answer» What is the difference between a note and a tone?

Discussion

9263.	Pillars holding the track of a metro train or bridges have a broader base. Give reason.
Answer» Pillars holding the track of a metro train or bridges have a broader base. Give reason.

Discussion

9264.	The bottom of a glass of water appears raised when seen from above
Answer» The bottom of a glass of water appears raised when seen from above

Discussion

9265.	The total charge on an aluminium rod, when brought near a charged plastic rod is
Answer» The total charge on an aluminium rod, when brought near a charged plastic rod is

Discussion

9266.	How long does the whole process of a lightning strike take?
Answer» How long does the whole process of a lightning strike take?

Discussion

9267.	A man hits a table with a flat stick applying a force of 20 N. If the area over which the force is acting is 2 cm2, calculate the pressure on that area.
Answer» A man hits a table with a flat stick applying a force of $20 N$ . If the area over which the force is acting is $2 c m^{2}$ , calculate the pressure on that area.

Discussion

9268.	If the north pole of a bar magnet is brought closer to a spherical iron ball then where will its induced north pole be?
Answer» If the north pole of a bar magnet is brought closer to a spherical iron ball then where will its induced north pole be?

9268.

If the north pole of a bar magnet is brought closer to a spherical iron ball then where will its induced north pole be?

Answer»

If the north pole of a bar magnet is brought closer to a spherical iron ball then where will its induced north pole be?

Discussion

9269.	In an experiment, a charged object attracts another object. What can be understood from this?
Answer» In an experiment, a charged object attracts another object. What can be understood from this?

Discussion

9270.	Which of the following statement is correct?
Answer» Which of the following statement is correct?

Discussion

9271.	Why is it convenient to pull a block on a trolley fitted with wheels rather than to drag the box on the floor? [3 MARKS]
Answer» Why is it convenient to pull a block on a trolley fitted with wheels rather than to drag the box on the floor? [3 MARKS]

Discussion

9272.	Vocal cords are present in ___.
Answer» Vocal cords are present in ___.

Discussion

9273.	State the effect of a force applied on (i) a non rigid, and (ii) a rigid body. How does the effect of the force differ in the two cases?
Answer» State the effect of a force applied on (i) a non rigid, and (ii) a rigid body. How does the effect of the force differ in the two cases?

Discussion

9274.	Tough and malleable form of iron is :-
Answer» Tough and malleable form of iron is :-

Discussion

9275.	Name the metal which is usually electroplated on car parts such as bumpers and bicycle handlebars made of steel.
Answer» Name the metal which is usually electroplated on car parts such as bumpers and bicycle handlebars made of steel.

Discussion

9276.	Name one natural and one artificial satellite of the Earth.
Answer» Name one natural and one artificial satellite of the Earth.

Discussion

9277.	Which of the following frequency of sound can be heard by a dog but not by a man ? (a) 50,000 hertz (b) 15,000 hertz.
Answer» Which of the following frequency of sound can be heard by a dog but not by a man ? (a) 50,000 hertz (b) 15,000 hertz.

9277.

Which of the following frequency of sound can be heard by a dog but not by a man ? (a) 50,000 hertz (b) 15,000 hertz.

Answer»

Which of the following frequency of sound can be heard by a dog but not by a man ?

(a) 50,000 hertz (b) 15,000 hertz.

Discussion

9278.	What charge is acquired by the glass rod when it is rubbed with a piece of silk?
Answer» What charge is acquired by the glass rod when it is rubbed with a piece of silk?

Discussion

9279.	Light can travel in the absence of a medium. That means light from the star( eg. Sun) can travel infinitely in the absence of obstructionss in its path. Then why is he space not illuminated? Light from all the stars is capable of reaching the boundaries of the universe, if any. Also then we may use powerful laser light to determine the extent of he universe by projecting it into the space and calculating the distance it covered by using the time it consumed
Answer» Light can travel in the absence of a medium. That means light from the star( eg. Sun) can travel infinitely in the absence of obstructionss in its path. Then why is he space not illuminated? Light from all the stars is capable of reaching the boundaries of the universe, if any. Also then we may use powerful laser light to determine the extent of he universe by projecting it into the space and calculating the distance it covered by using the time it consumed

Discussion

9280.	What is the difference between transverse and longitudinal wave ? Explain with examples. And show a diagram.
Answer» What is the difference between transverse and longitudinal wave ? Explain with examples. And show a diagram.

9280.

What is the difference between transverse and longitudinal wave ? Explain with examples. And show a diagram.

Answer»

What is the difference between transverse and longitudinal wave ?

Explain with examples.

And show a diagram.

Discussion

9281.	A bottle gets crushed when all its air is removed give reason
Answer» A bottle gets crushed when all its air is removed give reason

Discussion

9282.	Identify the subordinating conjunction which highlights reason. Mary, Jack and Jane looked up at the sky but could not bear the rays of the Sun because they were very bright.
Answer» Identify the subordinating conjunction which highlights reason. Mary, Jack and Jane looked up at the sky but could not bear the rays of the Sun because they were very bright.

9282.

Identify the subordinating conjunction which highlights reason. Mary, Jack and Jane looked up at the sky but could not bear the rays of the Sun because they were very bright.

Answer»

Identify the subordinating conjunction which highlights reason.

Mary, Jack and Jane looked up at the sky but could not bear the rays of the Sun because they were very bright.

Discussion

9283.	The same size in all positions of the object is obtained by a
Answer» The same size in all positions of the object is obtained by a

Discussion

9284.	What is nuclear energy?
Answer» What is nuclear energy?

Discussion

9285.	A radio station broadcast programs at wave frequency 20 Megacycles/sec. What would be their wavelength?
Answer» A radio station broadcast programs at wave frequency 20 Megacycles/sec. What would be their wavelength?

Discussion

9286.	If the wavelength of a sound wave is 40 cm and the time period T = 0.0005 s, then it takes ___ seconds to travel 4 km.
Answer» If the wavelength of a sound wave is 40 cm and the time period T = 0.0005 s, then it takes ___ seconds to travel 4 km.

Discussion

9287.	The time rate of flow of electric charge is the measure of electric___.
Answer» The time rate of flow of electric charge is the measure of electric___.

Discussion

9288.	Which of the following points falls on the principal axis?
Answer» Which of the following points falls on the principal axis?

Discussion

9289.	An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth .It was found that the balloon sticks to the wall.What force might be responsible for the attraction between the balloon and the wall ?
Answer» An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth .It was found that the balloon sticks to the wall.What force might be responsible for the attraction between the balloon and the wall ?

Discussion

9290.	Name two metals which are produced (or extracted) by using the chemical effect of electric current.
Answer» Name two metals which are produced (or extracted) by using the chemical effect of electric current.

Discussion

9291.	Which force can be used to gather iron pins scattered on the floor?
Answer» Which force can be used to gather iron pins scattered on the floor?

Discussion

9292.	In the above figure,, initially both the copper plates are of equal size .After some time, what changes do you observe in the size of the plates? [1 MARK]
Answer» In the above figure,, initially both the copper plates are of equal size .After some time, what changes do you observe in the size of the plates? [1 MARK]

9292.

In the above figure,, initially both the copper plates are of equal size .After some time, what changes do you observe in the size of the plates? [1 MARK]

Answer»

In the above figure,, initially both the copper plates are of equal size .After some time, what changes do you observe in the size of the plates?
[1 MARK]

Discussion

9293.	The air above our heads extends till the end of the atmosphere thus this huge amount of air exerts a force of about 1000 kgs on our heads. There is not a lot of air in our body so how is the force exerted by it enough to cancel out the weight of air above is?
Answer» The air above our heads extends till the end of the atmosphere thus this huge amount of air exerts a force of about 1000 kgs on our heads. There is not a lot of air in our body so how is the force exerted by it enough to cancel out the weight of air above is?

Discussion

9294.	Which of the following are required to see an object?
Answer» Which of the following are required to see an object?

Discussion

9295.	What are a multiple images? How they are formed?
Answer» What are a multiple images? How they are formed?

Discussion

9296.	When I stare at the sky on a bright day for a long time and then look back into my room, things appear in a dull color to me and I can't get a clear image of things. Why does this happen?
Answer» When I stare at the sky on a bright day for a long time and then look back into my room, things appear in a dull color to me and I can't get a clear image of things. Why does this happen?

Discussion

9297.	What do you mean by state of motion? What are the parameters to measure it? Can a body at rest be described by these parameters
Answer» What do you mean by state of motion? What are the parameters to measure it? Can a body at rest be described by these parameters

Discussion

9298.	Which celestial object is called a shooting star?
Answer» Which celestial object is called a shooting star?

Discussion

9299.	What is the meaning of degree of the polynomial
Answer» What is the meaning of degree of the polynomial

Discussion

9300.	Describe an experiment that you can perform in the labaratory to demonstrate the exisistence atomspheric pressure
Answer» Describe an experiment that you can perform in the labaratory to demonstrate the exisistence atomspheric pressure

Discussion

Explore topic-wise InterviewSolutions in .

State Pascal's law. Give a simple experiment to demonstrate this law.

Two resistances R1 and R2 give a combined resistance of 4.5 Ω when in series and 1 Ω when in parallel. The value of resistances are___________.​

_________are stretched across the voice box or larynx in such a way that it leaves a narrow slit between them for the passage of air.

A cube of side 0.2 m rest on the floor . Given that the cube has a mass of 50 kg. The pressure exerted by the cube on the floor is? (Take g=10N/kg)

A source is producing 15 waves in 3 seconds. The distance between a crest and t trough is 10 cm. Find the velocity of the wave?

What do you think the rollers do in skating shoes?

Why refraction will happen to the light if it changes it's medium?

In properties of electric charge There it is written that electric charge is quantised and the quantam of charge is equal to an electron Q=be What is that mean

Explain why, when an object is placed between two plane mirrors inclined at an angle, then multiple images are formed.

What are the characteristics same for both waves given in the fig (1) and fig (2).

What is the difference between a note and a tone?

Pillars holding the track of a metro train or bridges have a broader base. Give reason.

The bottom of a glass of water appears raised when seen from above

The total charge on an aluminium rod, when brought near a charged plastic rod is

How long does the whole process of a lightning strike take?

A man hits a table with a flat stick applying a force of 20 N. If the area over which the force is acting is 2 cm2, calculate the pressure on that area.

If the north pole of a bar magnet is brought closer to a spherical iron ball then where will its induced north pole be?

In an experiment, a charged object attracts another object. What can be understood from this?

Which of the following statement is correct?

Why is it convenient to pull a block on a trolley fitted with wheels rather than to drag the box on the floor? [3 MARKS]

Vocal cords are present in ___.

State the effect of a force applied on (i) a non rigid, and (ii) a rigid body. How does the effect of the force differ in the two cases?

Tough and malleable form of iron is :-

Name the metal which is usually electroplated on car parts such as bumpers and bicycle handlebars made of steel.

Name one natural and one artificial satellite of the Earth.

Which of the following frequency of sound can be heard by a dog but not by a man ? (a) 50,000 hertz (b) 15,000 hertz.

What charge is acquired by the glass rod when it is rubbed with a piece of silk?

What is the difference between transverse and longitudinal wave ? Explain with examples. And show a diagram.

A bottle gets crushed when all its air is removed give reason

Identify the subordinating conjunction which highlights reason. Mary, Jack and Jane looked up at the sky but could not bear the rays of the Sun because they were very bright.

The same size in all positions of the object is obtained by a

What is nuclear energy?

A radio station broadcast programs at wave frequency 20 Megacycles/sec. What would be their wavelength?

If the wavelength of a sound wave is 40 cm and the time period T = 0.0005 s, then it takes ___ seconds to travel 4 km.

The time rate of flow of electric charge is the measure of electric___.

Which of the following points falls on the principal axis?

An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth .It was found that the balloon sticks to the wall.What force might be responsible for the attraction between the balloon and the wall ?

Name two metals which are produced (or extracted) by using the chemical effect of electric current.

Which force can be used to gather iron pins scattered on the floor?

In the above figure,, initially both the copper plates are of equal size .After some time, what changes do you observe in the size of the plates? [1 MARK]

The air above our heads extends till the end of the atmosphere thus this huge amount of air exerts a force of about 1000 kgs on our heads. There is not a lot of air in our body so how is the force exerted by it enough to cancel out the weight of air above is?

Which of the following are required to see an object?

What are a multiple images? How they are formed?

When I stare at the sky on a bright day for a long time and then look back into my room, things appear in a dull color to me and I can't get a clear image of things. Why does this happen?

What do you mean by state of motion? What are the parameters to measure it? Can a body at rest be described by these parameters

Which celestial object is called a shooting star?

What is the meaning of degree of the polynomial ​​​​​​

Describe an experiment that you can perform in the labaratory to demonstrate the exisistence atomspheric pressure

Two resistances R1 and R2 give a combined resistance of 4.5 Ω when in series and 1 Ω when in parallel. The value of resistances are___________.

What is the meaning of degree of the polynomial