9478 + Interview Questions in Physics Page 116 InterviewSolution

5751.	Why is nitrogen not used in fire extinguishers inspite it is a non supporter of combustion
Answer» Why is nitrogen not used in fire extinguishers inspite it is a non supporter of combustion

Discussion

5752.	A uniform metre rule of weight 10 gf is pivoted at its 0 mark. (i) What moment of force depresses the rule ? (ii) How can it be made horizontal by applying a least force ?
Answer» A uniform metre rule of weight 10 gf is pivoted at its 0 mark. (i) What moment of force depresses the rule ? (ii) How can it be made horizontal by applying a least force ?

5752.

A uniform metre rule of weight 10 gf is pivoted at its 0 mark. (i) What moment of force depresses the rule ? (ii) How can it be made horizontal by applying a least force ?

Answer»

A uniform metre rule of weight 10 gf is pivoted at its 0 mark.

(i) What moment of force depresses the rule ?

(ii) How can it be made horizontal by applying a least force ?

Discussion

5753.	A plastic comb is rubbed against dry hair gently. What is the effect on both the plastic comb and dry hair?
Answer» A plastic comb is rubbed against dry hair gently. What is the effect on both the plastic comb and dry hair?

Discussion

5754.	Diffused reflection is :
Answer» Diffused reflection is :

Discussion

5755.	A force makes a stationary body of mass 25 kg to move 60 m in 10 s. Find the magnitude of this force.
Answer» A force makes a stationary body of mass $25 k g$ to move $60 m$ in $10 s$ . Find the magnitude of this force.

Discussion

5756.	Phases of moon are observed because:
Answer» Phases of moon are observed because:

Discussion

5757.	Which of the following sound waves has the highest pitch?
Answer» Which of the following sound waves has the highest pitch?

Discussion

5758.	Observe the given figure. How many bulbs can the observer see from the mirror without changing the position of his eye and bulbs?
Answer» Observe the given figure. How many bulbs can the observer see from the mirror without changing the position of his eye and bulbs?

5758.

Observe the given figure. How many bulbs can the observer see from the mirror without changing the position of his eye and bulbs?

Answer»

Observe the given figure.

How many bulbs can the observer see from the mirror without changing the position of his eye and bulbs?

Discussion

5759.	Explain series and parallel combination of capacitors.
Answer» Explain series and parallel combination of capacitors.

Discussion

5760.	If four resistances each of values 1 ohm are connected in series, resultant resistance will be in:
Answer» If four resistances each of values 1 ohm are connected in series, resultant resistance will be in:

Discussion

5761.	What is a thrust and a buyaunt force.Please explain it with examples
Answer» What is a thrust and a buyaunt force.Please explain it with examples

Discussion

5762.	Mass of Mars is 6.42×1029 kg and the mass of the sun is 1.99×1030 kg.what is their total mass
Answer» Mass of Mars is 6.42×10²⁹ kg and the mass of the sun is 1.99×10³⁰ kg.what is their total mass

5762.

Mass of Mars is 6.42×1029 kg and the mass of the sun is 1.99×1030 kg.what is their total mass

Answer»

Mass of Mars is 6.42×10²⁹ kg and the mass of the sun is

1.99×10³⁰ kg.what is their total mass

Discussion

5763.	As the angle between two plane mirrors is decreased gradually, the number of images of an object placed between them: (a) increases gradually (b) decreases gradually (c) first increases then decreases (d) first decreases then increases
Answer» As the angle between two plane mirrors is decreased gradually, the number of images of an object placed between them: (a) increases gradually (b) decreases gradually (c) first increases then decreases (d) first decreases then increases

5763.

As the angle between two plane mirrors is decreased gradually, the number of images of an object placed between them: (a) increases gradually (b) decreases gradually (c) first increases then decreases (d) first decreases then increases

Answer»

As the angle between two plane mirrors is decreased gradually, the number of images of an object placed between them:

(a) increases gradually

(b) decreases gradually

(c) first increases then decreases

(d) first decreases then increases

Discussion

5764.	Every object in this universe, whether small or large exerts a force on every other object. What is the name of this force?
Answer» Every object in this universe, whether small or large exerts a force on every other object. What is the name of this force?

Discussion

5765.	When a container is completely filled with water ( nw = 4/3 ) it's bottom appears raised by 4cm. Find the actual depth of water.
Answer» When a container is completely filled with water ( n_w = 4/3 ) it's bottom appears raised by 4cm. Find the actual depth of water.

Discussion

5766.	Can we count stars in the sky?
Answer» Can we count stars in the sky?

Discussion

5767.	Pressure is
Answer» Pressure is

Discussion

5768.	What is the unit of force?
Answer» What is the unit of force?

Discussion

5769.	A sharp-edged knife cuts more easily than a spoon even on the application of a greater force. What is the reason for this?
Answer» A sharp-edged knife cuts more easily than a spoon even on the application of a greater force. What is the reason for this?

Discussion

5770.	A body when immersed in kerosene it sinks. What relation could be established between the densities of body and kerosene?
Answer» A body when immersed in kerosene it sinks. What relation could be established between the densities of body and kerosene?

Discussion

5771.	Which of the following are true for a conductor?
Answer» Which of the following are true for a conductor?

Discussion

5772.	Why does it hurt to walk over stones?
Answer» Why does it hurt to walk over stones?

Discussion

5773.	Which of these is not a basic assumption (axiom) of the model of electrostatics?
Answer» Which of these is not a basic assumption (axiom) of the model of electrostatics?

Discussion

5774.	The length of a side of a square is 10 cm. What is its area in square metre?
Answer» The length of a side of a square is $10 c m$ . What is its area in square metre?

Discussion

5775.	Amount of pressure at a point in a liquid increases:
Answer» Amount of pressure at a point in a liquid increases:

Discussion

5776.	Why earth's axis are tilted?
Answer» Why earth's axis are tilted?

Discussion

5777.	How does pressure in liquid change with depth
Answer» How does pressure in liquid change with depth

Discussion

5778.	Write down two disadvantages of friction and suggest ways to overcome these.
Answer» Write down two disadvantages of friction and suggest ways to overcome these.

Discussion

5779.	Is light a transverse wave or an electromagnetic wave?
Answer» Is light a transverse wave or an electromagnetic wave?

Discussion

5780.	If an electric current is passed through the electrodes that are immersed in water, then bubbles of oxygen and hydrogen are produced. Identify the correct statement from the following.
Answer» If an electric current is passed through the electrodes that are immersed in water, then bubbles of oxygen and hydrogen are produced. Identify the correct statement from the following.

Discussion

5781.	What functions are served by the parts of middle Ear??
Answer» What functions are served by the parts of middle Ear??

Discussion

5782.	Which of the following is correct about wool?
Answer» Which of the following is correct about wool?

Discussion

5783.	A plane mirror is placed at the bottom of the tank containing a liquid of refractive index μ . P is a small object at a height h above the mirror. An observer O-vertically above P outside the liquid see P and its image in the mirror. The apparent distance between these two will be
Answer» A plane mirror is placed at the bottom of the tank containing a liquid of refractive index $μ$ . P is a small object at a height h above the mirror. An observer O-vertically above P outside the liquid see P and its image in the mirror. The apparent distance between these two will be

Discussion

5784.	When we put acetone (nail polish remover) in our hand, we will feel cold. Why?
Answer» When we put acetone (nail polish remover) in our hand, we will feel cold. Why?

Discussion

5785.	In Van der Waal's equation of state of the gas law, the constant 'b' is a measure of
Answer» In Van der Waal's equation of state of the gas law, the constant 'b' is a measure of

Discussion

5786.	if you place your ears close to an iron railing and your friend taps it at some distance away you hear the sound twice why is it so
Answer» if you place your ears close to an iron railing and your friend taps it at some distance away you hear the sound twice why is it so

Discussion

5787.	Current is due to which of the following reason?
Answer» Current is due to which of the following reason?

Discussion

5788.	What is axis of rotation? State one way to decrease the moment of a given force about a given axis of rotation.
Answer» What is axis of rotation? State one way to decrease the moment of a given force about a given axis of rotation.

Discussion

5789.	The area of a square is 16 cm2. The area of the rectangle with length equal to double the side of the square and breadth equal to half of the side of the square is ___
Answer» The area of a square is $16 c m^{2}$ . The area of the rectangle with length equal to double the side of the square and breadth equal to half of the side of the square is ___

Discussion

5790.	When a charged object is brought near an uncharged object, it gets attracted. This process involves charging by :
Answer» When a charged object is brought near an uncharged object, it gets attracted. This process involves charging by :

Discussion

5791.	Out of A,B and C we have to select the beaker/beakers which conduct electricity. Select the correct option from the following-
Answer» Out of A,B and C we have to select the beaker/beakers which conduct electricity. Select the correct option from the following-

5791.

Out of A,B and C we have to select the beaker/beakers which conduct electricity. Select the correct option from the following-

Answer»

Out of A,B and C we have to select the beaker/beakers which conduct electricity. Select the correct option from the following-

Discussion

5792.	Is the buoyant force equal in all liquids? Why and how?
Answer» Is the buoyant force equal in all liquids? Why and how?

Discussion

5793.	If x plus one upon x equals to 2 then root x + 1 upon root x equals to?
Answer» If x plus one upon x equals to 2 then root x + 1 upon root x equals to?

Discussion

5794.	Which of the following graphs shows the variation in density of water with the temperature in the range from 0 ∘C to 10 ∘C?
Answer» Which of the following graphs shows the variation in density of water with the temperature in the range from 0 $^{\circ} C$ to 10 $^{\circ} C$ ?

Discussion

5795.	How is distilled water different from tap water in terms of electrical conductivity? Explain the reason for this difference. [2 MARKS]
Answer» How is distilled water different from tap water in terms of electrical conductivity? Explain the reason for this difference. [2 MARKS]

Discussion

5796.	In which of the following options is frictional force working?
Answer» In which of the following options is frictional force working?

Discussion

5797.	When heat is transferred from one particle of hot body to another by actual motion of the heated particles, it is referred to as heat transfer by:
Answer» When heat is transferred from one particle of hot body to another by actual motion of the heated particles, it is referred to as heat transfer by:

Discussion

5798.	What is the range of vision of a normal human eye ?
Answer» What is the range of vision of a normal human eye ?

Discussion

5799.	The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?
Answer» The frequency of a source of sound is $100 H z$ . How many times does it vibrate in a minute?

Discussion

5800.	Why does a magnet attracts certain materials?
Answer» Why does a magnet attracts certain materials?

Discussion

Explore topic-wise InterviewSolutions in .

Why is nitrogen not used in fire extinguishers inspite it is a non supporter of combustion

A uniform metre rule of weight 10 gf is pivoted at its 0 mark. (i) What moment of force depresses the rule ? (ii) How can it be made horizontal by applying a least force ?

A plastic comb is rubbed against dry hair gently. What is the effect on both the plastic comb and dry hair?

Diffused reflection is :

A force makes a stationary body of mass 25 kg to move 60 m in 10 s. Find the magnitude of this force.

Phases of moon are observed because:

Which of the following sound waves has the highest pitch?

Observe the given figure. How many bulbs can the observer see from the mirror without changing the position of his eye and bulbs?

Explain series and parallel combination of capacitors.

If four resistances each of values 1 ohm are connected in series, resultant resistance will be in:

What is a thrust and a buyaunt force.Please explain it with examples

Mass of Mars is 6.42×1029 kg and the mass of the sun is 1.99×1030 kg.what is their total mass

As the angle between two plane mirrors is decreased gradually, the number of images of an object placed between them: (a) increases gradually (b) decreases gradually (c) first increases then decreases (d) first decreases then increases

Every object in this universe, whether small or large exerts a force on every other object. What is the name of this force?

When a container is completely filled with water ( n​​​​​​w = 4/3 ) it's bottom appears raised by 4cm. Find the actual depth of water.

Can we count stars in the sky?

Pressure is

What is the unit of force?

A sharp-edged knife cuts more easily than a spoon even on the application of a greater force. What is the reason for this?

A body when immersed in kerosene it sinks. What relation could be established between the densities of body and kerosene?

Which of the following are true for a conductor?

Why does it hurt to walk over stones?

Which of these is not a basic assumption (axiom) of the model of electrostatics?

The length of a side of a square is 10 cm. What is its area in square metre?

Amount of pressure at a point in a liquid increases:

Why earth's axis are tilted?

How does pressure in liquid change with depth

Write down two disadvantages of friction and suggest ways to overcome these.

Is light a transverse wave or an electromagnetic wave?

If an electric current is passed through the electrodes that are immersed in water, then bubbles of oxygen and hydrogen are produced. Identify the correct statement from the following.

What functions are served by the parts of middle Ear??

Which of the following is correct about wool?

A plane mirror is placed at the bottom of the tank containing a liquid of refractive index μ . P is a small object at a height h above the mirror. An observer O-vertically above P outside the liquid see P and its image in the mirror. The apparent distance between these two will be

When we put acetone (nail polish remover) in our hand, we will feel cold. Why?

In Van der Waal's equation of state of the gas law, the constant 'b' is a measure of

if you place your ears close to an iron railing and your friend taps it at some distance away you hear the sound twice why is it so

Current is due to which of the following reason?

What is axis of rotation? State one way to decrease the moment of a given force about a given axis of rotation.

The area of a square is 16 cm2. The area of the rectangle with length equal to double the side of the square and breadth equal to half of the side of the square is ___

When a charged object is brought near an uncharged object, it gets attracted. This process involves charging by :

Out of A,B and C we have to select the beaker/beakers which conduct electricity. Select the correct option from the following-

Is the buoyant force equal in all liquids? Why and how?

If x plus one upon x equals to 2 then root x + 1 upon root x equals to?

Which of the following graphs shows the variation in density of water with the temperature in the range from 0 ∘C to 10 ∘C?

How is distilled water different from tap water in terms of electrical conductivity? Explain the reason for this difference. [2 MARKS]

In which of the following options is frictional force working?

When heat is transferred from one particle of hot body to another by actual motion of the heated particles, it is referred to as heat transfer by:

What is the range of vision of a normal human eye ?

The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?

Why does a magnet attracts certain materials?

When a container is completely filled with water ( nw = 4/3 ) it's bottom appears raised by 4cm. Find the actual depth of water.