9478 + Interview Questions in Physics Page 13 InterviewSolution

601.	explain why root7 is irrational number and 5 + root13 is irratinal number
Answer» explain why root7 is irrational number and 5 + root13 is irratinal number

Discussion

602.	Question 1 (d)Fill in the blank:Sprinkling of powder on the carrom board ________friction.
Answer» Question 1 (d) Fill in the blank: Sprinkling of powder on the carrom board ________friction.

Discussion

603.	A particle execuring SHM with amplitude A and time period T. The distance travelled by the particle in time T/12 starting from rest is
Answer» A particle execuring SHM with amplitude A and time period T. The distance travelled by the particle in time T/12 starting from rest is

Discussion

604.	Question 7Rocket works on the principle of conservation of(a) mass(b) energy(c) momentum(d) velocity
Answer» Question 7 Rocket works on the principle of conservation of (a) mass (b) energy (c) momentum (d) velocity

Discussion

605.	Why current moves in opposite direction where electrons move in a wire
Answer» Why current moves in opposite direction where electrons move in a wire

Discussion

606.	Name the organs of hearing in our body.
Answer» Name the organs of hearing in our body.

Discussion

607.	The diagram shown below explains that:
Answer» The diagram shown below explains that:

Discussion

608.	For the graph given below choose the correct option by matching the following : TableATableBa)LineAi)Accelerated Motionb)LineBii)Constant velocity(high magnitude)c)CurveCiii)At restd)LineEiv)Constant Velocity(low magnitude)
Answer» For the graph given below choose the correct option by matching the following : $\begin{matrix} T a b l e A & T a b l e B a) L i n e A & i) A c c e l e r a t e d M o t i o n b) L i n e B & i i) C o n s t a n t v e l o c i t y (h i g h m a g n i t u d e) c) C u r v e C & i i i) A t r e s t d) L i n e E & i v) C o n s t a n t V e l o c i t y (l o w m a g n i t u d e) \end{matrix}$

608.

For the graph given below choose the correct option by matching the following : TableATableBa)LineAi)Accelerated Motionb)LineBii)Constant velocity(high magnitude)c)CurveCiii)At restd)LineEiv)Constant Velocity(low magnitude)

Answer»

For the graph given below choose the correct option by matching the following :

$\begin{matrix} T a b l e A & T a b l e B a) L i n e A & i) A c c e l e r a t e d M o t i o n b) L i n e B & i i) C o n s t a n t v e l o c i t y (h i g h m a g n i t u d e) c) C u r v e C & i i i) A t r e s t d) L i n e E & i v) C o n s t a n t V e l o c i t y (l o w m a g n i t u d e) \end{matrix}$

Discussion

609.	how are proton dependent on tdifferent types of gases ?
Answer» how are proton dependent on tdifferent types of gases ?

Discussion

610.	can any type of force change the path of light or stop it?
Answer» can any type of force change the path of light or stop it?

Discussion

611.	How can we tell that Saturn can float on water
Answer» How can we tell that Saturn can float on water

Discussion

612.

Match the following. Group ‘A’ Group ‘B’ (a) Anomalous expansion 2. water (b) Density 1. mass/volume (c) Dead Sea 4. 25% salts (d) Water 3. compound

Answer»

Match the following.

Group ‘A’		Group ‘B’
(a)	Anomalous expansion	2.	water
(b)	Density	1.	mass/volume
(c)	Dead Sea	4.	25% salts
(d)	Water	3.	compound

Discussion

613.	A metal rod A is to be charged positively by using another charged rod B. What should be the kind of charge on the rod B if charging is to be done by conduction?
Answer» A metal rod A is to be charged positively by using another charged rod B. What should be the kind of charge on the rod B if charging is to be done by conduction?

Discussion

614.	Question 1 A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force. Let us take it that the force acts on the object through the displacement. What is the work done in this case?
Answer» Question 1 A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force. Let us take it that the force acts on the object through the displacement. What is the work done in this case?

Discussion

615.	34.A body of mass .1kg is pressed against a wall with a horizontal force 5N. If coefficient of friction is .5 then find the force of friction.
Answer» 34.A body of mass .1kg is pressed against a wall with a horizontal force 5N. If coefficient of friction is .5 then find the force of friction.

Discussion

616.	If the volume of a 3 x 3 Rubik's cube is 81 cm3, what is the length (in cm) of a side of each of the smaller cubes?3
Answer» If the volume of a 3 x 3 Rubik's cube is $81 {cm}^{3}$ , what is the length (in $cm$ ) of a side of each of the smaller cubes? 3

616.

If the volume of a 3 x 3 Rubik's cube is 81 cm3, what is the length (in cm) of a side of each of the smaller cubes?3

Answer» If the volume of a 3 x 3 Rubik's cube is

81 {cm}^{3}

, what is the length (in

cm

) of a side of each of the smaller cubes?

3

Discussion

617.	The tension in a string holding a solid block below the surface of a liquid (of density greater than that of solid) is T0 when the containing vessel is at rest. The tension T when the vessel has an upward vertical acceleration a is given by
Answer» The tension in a string holding a solid block below the surface of a liquid (of density greater than that of solid) is T0 when the containing vessel is at rest. The tension T when the vessel has an upward vertical acceleration a is given by

Discussion

618.	Question 16Observe which of these two circuits A or B shows the correct observation?
Answer» Question 16 Observe which of these two circuits A or B shows the correct observation?

Discussion

619.	In the set up shown the weight of the body was measured in air and in water. The reading of mark X in the spring balance would be :(1) 36g wt(2) 30g wt(3) 24g wt(4) 6g wt
Answer» In the set up shown the weight of the body was measured in air and in water. The reading of mark X in the spring balance would be : (1) 36g wt (2) 30g wt (3) 24g wt (4) 6g wt

Discussion

620.	Frictional force(f) = Coefficient of friction× ___.
Answer» Frictional force( $f)$ = Coefficient of friction $\times$ ___.

Discussion

621.	A hole 75 mm is to be punched in a steel plate 5.6 mm thick. The ultimate shear stress is 500N/mm2. It cutting is complete at 40 percent penetration of the punch and shear of 2 mm is provided on the punch , The minimum force required in the punch is ____kN348.538
Answer» A hole 75 mm is to be punched in a steel plate 5.6 mm thick. The ultimate shear stress is $500 N / m m^{2}$ . It cutting is complete at 40 percent penetration of the punch and shear of 2 mm is provided on the punch , The minimum force required in the punch is ____kN 348.538

Discussion

622.	Which of the following is a way to increase friction between two surfaces?
Answer» Which of the following is a way to increase friction between two surfaces?

Discussion

623.	31.An aqueous solution contains 8.2% Na3PO4 and 12% MgSO4 by weight. The percentage ionisation of Na3PO4 and MgSO4 in the solution are 50% and 60% respectively. Kb for water is .5K kg/mol. The boiling point of the solution is -
Answer» 31.An aqueous solution contains 8.2% Na3PO4 and 12% MgSO4 by weight. The percentage ionisation of Na3PO4 and MgSO4 in the solution are 50% and 60% respectively. Kb for water is .5K kg/mol. The boiling point of the solution is -

Discussion

624.	Why is a cow magnet used to prevent Hardware disease in cattle?
Answer» Why is a cow magnet used to prevent Hardware disease in cattle?

Discussion

625.	In the given circuit , R1=1Ω ; R2=2Ω ; C1=4μF ; C2=2μF, then the time constant (in μs) for the given RC circuits are
Answer» In the given circuit , $R_{1} = 1 Ω; R_{2} = 2 Ω; C_{1} = 4 μ F; C_{2} = 2 μ F$ , then the time constant (in $μ s$ ) for the given $RC$ circuits are

Discussion

626.	19. The density of ice is 0.9g/c and that of sea water is 1.1g/cc . An iceberg of volume V is floating in sea water. The fraction of iceberg above water level is
Answer» 19. The density of ice is 0.9g/c and that of sea water is 1.1g/cc . An iceberg of volume V is floating in sea water. The fraction of iceberg above water level is

Discussion

627.	How does a fuse protect the electric wiring (or an appliance) from being damaged?
Answer» How does a fuse protect the electric wiring (or an appliance) from being damaged?

Discussion

628.	According to the conventions direction of flow of electric current is taken from positive terminal to negative terminal of the battery, which is opposite to the flow of___ .
Answer» According to the conventions direction of flow of electric current is taken from positive terminal to negative terminal of the battery, which is opposite to the flow of___ .

Discussion

629.	How to find cube root?How to find value of 'a' if we once know the value of a^3?
Answer» How to find cube root? How to find value of 'a' if we once know the value of a^3?

Discussion

630.	Why people at hill station suffer from nose bleeding
Answer» Why people at hill station suffer from nose bleeding

Discussion

631.	Identify the phenomenon in which electric discharge occurs.
Answer» Identify the phenomenon in which electric discharge occurs.

Discussion

632.	n an oil drop experiment, the following charges(in arbitrary units) were found on a series of oil droplets: 2.30×10^{-15},6.90×10^{-15},1.38×10^{-14},5.75×10^{-15},1.955×10^{-14}.The charge on electron(in the same unit) should be
Answer» n an oil drop experiment, the following charges(in arbitrary units) were found on a series of oil droplets: 2.30×10^{-15},6.90×10^{-15},1.38×10^{-14},5.75×10^{-15},1.955×10^{-14}.The charge on electron(in the same unit) should be

Discussion

633.	WHAT IS THE DIFFERENCE BETWEEN FULL WAVE RECTIFIER WITH CAPACITOR FILTER AND ZENER DIODE(USED TO REGULATE VOLTAGE)?
Answer» WHAT IS THE DIFFERENCE BETWEEN FULL WAVE RECTIFIER WITH CAPACITOR FILTER AND ZENER DIODE(USED TO REGULATE VOLTAGE)?

Discussion

634.	Question 1 (b)Fill in the blank.The passage of an electric current through a solution causes _______effects.
Answer» Question 1 (b) Fill in the blank. The passage of an electric current through a solution causes _______effects.

Discussion

635.	Identify the correct sequence of events that take place when an external force acts on a block (at rest) kept on a rough surface. A. The block starts moving. B. Static friction starts acting on the block. C. Kinetic friction acts on the block. D. The block continues to be stationary.
Answer» Identify the correct sequence of events that take place when an external force acts on a block (at rest) kept on a rough surface. A. The block starts moving. B. Static friction starts acting on the block. C. Kinetic friction acts on the block. D. The block continues to be stationary.

Discussion

636.	Explain the unit of sound power.
Answer» Explain the unit of sound power.

Discussion

637.	What is Heat ?
Answer» What is Heat ?

Discussion

638.	The pitch of the sound depends on
Answer» The pitch of the sound depends on

Discussion

639.	What is a longitudinal wave?
Answer» What is a longitudinal wave?

Discussion

640.	enthalpy of vaporization of liquid is 40kj/mol and entropy of vaporization is 80j mol k the boling point of liquid at 1atm
Answer» enthalpy of vaporization of liquid is 40kj/mol and entropy of vaporization is 80j mol k the boling point of liquid at 1atm

Discussion

641.	Suppose you and your friend are on the moon. Will you be able to hear any sound produced by your friend?
Answer» Suppose you and your friend are on the moon. Will you be able to hear any sound produced by your friend?

Discussion

642.	An ebonite is rubbed with fur. State the kind of charge acquired by each.
Answer» An ebonite is rubbed with fur. State the kind of charge acquired by each.

Discussion

643.	In the situation given, all the surfaces are frictionless,pulley is ideal and string is light F=mg/2, find the acceleration of block 2.
Answer» In the situation given, all the surfaces are frictionless,pulley is ideal and string is light F=mg/2, find the acceleration of block 2.

Discussion

644.	An aluminium rod with another alloy are bonded together at 20∘C to form a bimetal sensor. The length of the bimetal rod at 20∘C is 10 m. How much the rod will expand (in mm) when the temperature is changed from 0∘C to 100∘C? The expansion coefficient of aluminium is 2.5×10−6/∘C.25
Answer» An aluminium rod with another alloy are bonded together at $20^{\circ} C$ to form a bimetal sensor. The length of the bimetal rod at $20^{\circ} C$ is $10 m$ . How much the rod will expand (in mm) when the temperature is changed from $0^{\circ} C$ to $100^{\circ} C ?$ The expansion coefficient of aluminium is $2.5 \times 10^{- 6} /^{\circ} C .$ 25

Discussion

645.	Hydraulic disc brakes ,hydraulic pressure ,Android barometer , hydraulic car Jack Which one is odd giving reason
Answer» Hydraulic disc brakes ,hydraulic pressure ,Android barometer , hydraulic car Jack Which one is odd giving reason

645.

Hydraulic disc brakes ,hydraulic pressure ,Android barometer , hydraulic car Jack Which one is odd giving reason

Answer»

Hydraulic disc brakes ,hydraulic pressure ,Android barometer , hydraulic car Jack

Which one is odd giving reason

Discussion

646.	The correct bond order in the following species is.O2 O2+ O22+ O22+ O2+ O2-O22+ , O2+ , O2O2+ O2- O22+
Answer» The correct bond order in the following species is. O₂ O₂⁺ O₂²⁺ O₂²⁺O₂⁺ O₂^- O₂²⁺ , O₂⁺, O₂ ^O_²^{+ O}_²^{- O}_²²⁺

646.

The correct bond order in the following species is.O2 O2+ O22+ O22+ O2+ O2-O22+ , O2+ , O2O2+ O2- O22+

Answer»

The correct bond order in the following species is.

O₂ O₂⁺ O₂²⁺
O₂²⁺O₂⁺ O₂^-
O₂²⁺ , O₂⁺, O₂
^O_²^{+ O}_²^{- O}_²²⁺

Discussion

647.	how to find oxidizing stat
Answer» how to find oxidizing stat

Discussion

648.	Relative permeability and relative susceptibility of. Diamagnetic,,paramagnetic,,and ferromagnetic is ??
Answer» Relative permeability and relative susceptibility of. Diamagnetic,,paramagnetic,,and ferromagnetic is ??

Discussion

649.	When earth crosses the tail of a comet, swarms of meteors are seen. This phenomenon is known as _____.
Answer» When earth crosses the tail of a comet, swarms of meteors are seen. This phenomenon is known as _____.

Discussion

650.	Explain the phenomenon of dispersion of white light through a glass prism, using suitable ray diagram.
Answer» Explain the phenomenon of dispersion of white light through a glass prism, using suitable ray diagram.

Discussion

Explore topic-wise InterviewSolutions in .

explain why root7 is irrational number and 5 + root13 is irratinal number

Question 1 (d)Fill in the blank:Sprinkling of powder on the carrom board ________friction.

A particle execuring SHM with amplitude A and time period T. The distance travelled by the particle in time T/12 starting from rest is

Question 7Rocket works on the principle of conservation of(a) mass(b) energy(c) momentum(d) velocity

Why current moves in opposite direction where electrons move in a wire

Name the organs of hearing in our body.

The diagram shown below explains that:

For the graph given below choose the correct option by matching the following : TableATableBa)LineAi)Accelerated Motionb)LineBii)Constant velocity(high magnitude)c)CurveCiii)At restd)LineEiv)Constant Velocity(low magnitude)

how are proton dependent on tdifferent types of gases ?

can any type of force change the path of light or stop it?

How can we tell that Saturn can float on water

Match the following. Group ‘A’ Group ‘B’ (a) Anomalous expansion 2. water (b) Density 1. mass/volume (c) Dead Sea 4. 25% salts (d) Water 3. compound

A metal rod A is to be charged positively by using another charged rod B. What should be the kind of charge on the rod B if charging is to be done by conduction?

Question 1 A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force. Let us take it that the force acts on the object through the displacement. What is the work done in this case?

34.A body of mass .1kg is pressed against a wall with a horizontal force 5N. If coefficient of friction is .5 then find the force of friction.

If the volume of a 3 x 3 Rubik's cube is 81 cm3, what is the length (in cm) of a side of each of the smaller cubes?3

The tension in a string holding a solid block below the surface of a liquid (of density greater than that of solid) is T0 when the containing vessel is at rest. The tension T when the vessel has an upward vertical acceleration a is given by

Question 16Observe which of these two circuits A or B shows the correct observation?

In the set up shown the weight of the body was measured in air and in water. The reading of mark X in the spring balance would be :(1) 36g wt(2) 30g wt(3) 24g wt(4) 6g wt

Frictional force(f) = Coefficient of friction× ___.

A hole 75 mm is to be punched in a steel plate 5.6 mm thick. The ultimate shear stress is 500N/mm2. It cutting is complete at 40 percent penetration of the punch and shear of 2 mm is provided on the punch , The minimum force required in the punch is ____kN348.538

Which of the following is a way to increase friction between two surfaces?

31.An aqueous solution contains 8.2% Na3PO4 and 12% MgSO4 by weight. The percentage ionisation of Na3PO4 and MgSO4 in the solution are 50% and 60% respectively. Kb for water is .5K kg/mol. The boiling point of the solution is -

Why is a cow magnet used to prevent Hardware disease in cattle?

In the given circuit , R1=1Ω ; R2=2Ω ; C1=4μF ; C2=2μF, then the time constant (in μs) for the given RC circuits are

19. The density of ice is 0.9g/c and that of sea water is 1.1g/cc . An iceberg of volume V is floating in sea water. The fraction of iceberg above water level is

How does a fuse protect the electric wiring (or an appliance) from being damaged?

According to the conventions direction of flow of electric current is taken from positive terminal to negative terminal of the battery, which is opposite to the flow of___ .

How to find cube root?How to find value of 'a' if we once know the value of a^3?

Why people at hill station suffer from nose bleeding

Identify the phenomenon in which electric discharge occurs.

n an oil drop experiment, the following charges(in arbitrary units) were found on a series of oil droplets: 2.30×10^{-15},6.90×10^{-15},1.38×10^{-14},5.75×10^{-15},1.955×10^{-14}.The charge on electron(in the same unit) should be

WHAT IS THE DIFFERENCE BETWEEN FULL WAVE RECTIFIER WITH CAPACITOR FILTER AND ZENER DIODE(USED TO REGULATE VOLTAGE)?

Question 1 (b)Fill in the blank.The passage of an electric current through a solution causes _______effects.

Identify the correct sequence of events that take place when an external force acts on a block (at rest) kept on a rough surface. A. The block starts moving. B. Static friction starts acting on the block. C. Kinetic friction acts on the block. D. The block continues to be stationary.

Explain the unit of sound power.

What is Heat ?

The pitch of the sound depends on

What is a longitudinal wave?

enthalpy of vaporization of liquid is 40kj/mol and entropy of vaporization is 80j mol k the boling point of liquid at 1atm

Suppose you and your friend are on the moon. Will you be able to hear any sound produced by your friend?

An ebonite is rubbed with fur. State the kind of charge acquired by each.

In the situation given, all the surfaces are frictionless,pulley is ideal and string is light F=mg/2, find the acceleration of block 2.

An aluminium rod with another alloy are bonded together at 20∘C to form a bimetal sensor. The length of the bimetal rod at 20∘C is 10 m. How much the rod will expand (in mm) when the temperature is changed from 0∘C to 100∘C? The expansion coefficient of aluminium is 2.5×10−6/∘C.25

Hydraulic disc brakes ,hydraulic pressure ,Android barometer , hydraulic car Jack Which one is odd giving reason

The correct bond order in the following species is.O2 O2+ O22+ O22+ O2+ O2-O22+ , O2+ , O2O2+ O2- O22+

how to find oxidizing stat

Relative permeability and relative susceptibility of. Diamagnetic,,paramagnetic,,and ferromagnetic is ??

When earth crosses the tail of a comet, swarms of meteors are seen. This phenomenon is known as _____.

Explain the phenomenon of dispersion of white light through a glass prism, using suitable ray diagram.