16569 + Interview Questions in Physics Page 14 InterviewSolution

651.	What are the major hazards of nuclear power plant?
Answer» What are the major hazards of nuclear power plant?

Discussion

652.	the speed of the car is reduced by one-third of its original value in travelling a dis†an ce s. then the car is brought to rest in a minimum dis†an ce of
Answer» the speed of the car is reduced by one-third of its original value in travelling a dis†an ce s. then the car is brought to rest in a minimum dis†an ce of

Discussion

653.	145.A: In a material medium speed of a particle can be more than the speed of light in that medium. R: In the phenomenon of green house effect, low wavelength radiation is allowed to pass but high wavelength radiation is not. Both A and R are correct and R is correct explanation of A. Both A and R are correct but R is not correct explanation of A. A is correct but R is not. Both A and R are wrong.
Answer» 145.A: In a material medium speed of a particle can be more than the speed of light in that medium. R: In the phenomenon of green house effect, low wavelength radiation is allowed to pass but high wavelength radiation is not. Both A and R are correct and R is correct explanation of A. Both A and R are correct but R is not correct explanation of A. A is correct but R is not. Both A and R are wrong.

Discussion

654.	Which of the following components will be in parallel?
Answer» Which of the following components will be in parallel?

654.

Which of the following components will be in parallel?

Answer»

Which of the following components will be in parallel?

Discussion

655.	Give construction oc zener diode
Answer» Give construction oc zener diode

Discussion

656.	A sample Q has half life 20 min. It decays by emitting alpha particle and beta particle with probability of 60% and 40% respectively.Initial sample of Q contains 1000 nuclei, then number of α− particle decay after one hour will be
Answer» A sample $Q$ has half life $20 min$ . It decays by emitting alpha particle and beta particle with probability of $60 %$ and $40 %$ respectively. Initial sample of $Q$ contains $1000$ nuclei, then number of $α -$ particle decay after one hour will be

Discussion

657.	The angle of incidence in medium 1 is 60∘ and angle of refraction in medium 2 is 30∘. Find 1μ2.
Answer» The angle of incidence in medium $1$ is $60^{\circ}$ and angle of refraction in medium $2$ is $30^{\circ}$ . Find $_{1} μ_{2}$ .

Discussion

658.	From a supply of identical capacitors rated 8uF ,250V the minimum number of capacitors required to form a composite 16 uF,1000V
Answer» From a supply of identical capacitors rated 8uF ,250V the minimum number of capacitors required to form a composite 16 uF,1000V

Discussion

659.	At the time of short circuit, the current in the circuit
Answer» At the time of short circuit, the current in the circuit

Discussion

660.	The function of a split ring in a dc motor is to
Answer» The function of a split ring in a dc motor is to

Discussion

661.	Why a conductor remains uncharged when current flows through it?
Answer» Why a conductor remains uncharged when current flows through it?

Discussion

662.	The percentage error in the measurement of thevoltage V is 3% and in the measurement of thecurrent is 2%. The percentage error in themeasurement of the resistance is(2) 2%(1) 3%(3) 1%(4) 5%
Answer» The percentage error in the measurement of thevoltage V is 3% and in the measurement of thecurrent is 2%. The percentage error in themeasurement of the resistance is(2) 2%(1) 3%(3) 1%(4) 5%

Discussion

663.	Label the eye parts correctly.i) Aqueous humour ii) vitreous humour iii) cornea iv) iris v) pupil
Answer» Label the eye parts correctly.i) Aqueous humour ii) vitreous humour iii) cornea iv) iris v) pupil

Discussion

664.	A current carrying wire is placed in the grooves of an insulating semi circular disc of radius 'R', as shown. The current enters at point A and leaves from point B. Determine the magnetic field at point D.
Answer» A current carrying wire is placed in the grooves of an insulating semi circular disc of radius 'R', as shown. The current enters at point A and leaves from point B. Determine the magnetic field at point D.

Discussion

665.	Question 22Pick the right combination of terms which has no fossil fuel.(a) Wind, ocean and coal(b) Kerosene, wind and tide(c) Wind, wood and sun(d) Petroleum, wood and sun
Answer» Question 22 Pick the right combination of terms which has no fossil fuel. (a) Wind, ocean and coal (b) Kerosene, wind and tide (c) Wind, wood and sun (d) Petroleum, wood and sun

Discussion

666.	At what distance should an object be placed from a convex lens of focal length 18 cm to obtain an image at 36 cm from it on the other side? What will be the magnification produced in this case?
Answer» At what distance should an object be placed from a convex lens of focal length 18 cm to obtain an image at 36 cm from it on the other side? What will be the magnification produced in this case?

Discussion

667.	inductor is connected to a direct voltage source through a switch. Now a) Very large emf is induced in inductor whenswitch is closed b) Larger emf is induced when switch is opened c) Large emf is induced whether switch is closedor opened d)No emf is induced whether switch is closed oropened
Answer» inductor is connected to a direct voltage source through a switch. Now a) Very large emf is induced in inductor whenswitch is closed b) Larger emf is induced when switch is opened c) Large emf is induced whether switch is closedor opened d)No emf is induced whether switch is closed oropened

Discussion

668.	What is the magnetic effect of electric current?
Answer» What is the magnetic effect of electric current?

Discussion

669.	The driver of a bus, approaching a big wall, notices that the frequency of his bus’s horn changes from 420 Hz to 490 Hz when he hears it after it gets reflected from the wall. Find the speed of the bus, if the speed of the sound is 330 ms–1
Answer» The driver of a bus, approaching a big wall, notices that the frequency of his bus’s horn changes from $420 Hz to 490 Hz$ when he hears it after it gets reflected from the wall. Find the speed of the bus, if the speed of the sound is $330 {ms}^{- 1}$

Discussion

670.	(a) What is meant by series and parallel combination of resistances?(b) In which case, series combination or parallel combination, the combined resistance is less than any of the individual resistances?(c) How should two resistances of 2 Ω each be connected so as to produce an equivalent resistance of 1 Ω?(d) In the circuit diagram given here, find:(i) total resistance of the circuit,(ii) total current flowing in the circuit, and(iii) the potential difference across R1
Answer» (a) What is meant by series and parallel combination of resistances? (b) In which case, series combination or parallel combination, the combined resistance is less than any of the individual resistances? (c) How should two resistances of 2 Ω each be connected so as to produce an equivalent resistance of 1 Ω? (d) In the circuit diagram given here, find: (i) total resistance of the circuit, (ii) total current flowing in the circuit, and (iii) the potential difference across R₁

Discussion

671.	why dos the sun appearr reddish early in moring and sky ppear dark instead o blue to an stronut
Answer» why dos the sun appearr reddish early in moring and sky ppear dark instead o blue to an stronut

Discussion

672.	A person needs a lens of power, −5.5 D for correcting his distant vision. For correcting his near vision, he needs a lens of power, + 1.5 D. What is the focal length of the lens required for correcting:(a) distant vision?(b) near vision?What type of lens is being used for correcting (i) distant vision, and (ii) near vision?
Answer» A person needs a lens of power, −5.5 D for correcting his distant vision. For correcting his near vision, he needs a lens of power, + 1.5 D. What is the focal length of the lens required for correcting: (a) distant vision? (b) near vision? What type of lens is being used for correcting (i) distant vision, and (ii) near vision?

Discussion

673.	Rays parallel to the principal axis of a concave mirror meet at which point?
Answer» Rays parallel to the principal axis of a concave mirror meet at which point?

Discussion

674.	Imagine you are the mirror. Write a speech that you would like to deliver to the humans who come to see their reflection in you. You could begin like this…. Good Morning dear humans. I feel honoured to have been given the opportunity to express my feelings and share my thoughts with you. As you know, all my life is spent in faithfully reflecting all that comes before my eyes…..
Answer» Imagine you are the mirror. Write a speech that you would like to deliver to the humans who come to see their reflection in you. You could begin like this…. Good Morning dear humans. I feel honoured to have been given the opportunity to express my feelings and share my thoughts with you. As you know, all my life is spent in faithfully reflecting all that comes before my eyes…..

674.

Imagine you are the mirror. Write a speech that you would like to deliver to the humans who come to see their reflection in you. You could begin like this…. Good Morning dear humans. I feel honoured to have been given the opportunity to express my feelings and share my thoughts with you. As you know, all my life is spent in faithfully reflecting all that comes before my eyes…..

Answer»

Imagine
you are the mirror. Write a speech that you would like to deliver to
the humans who come to see their reflection in you. You could begin
like this….

Good
Morning dear humans.

I
feel honoured to have been given the opportunity to express my
feelings and share my thoughts with you. As you know, all my life is
spent in faithfully reflecting all that comes before my eyes…..

Discussion

675.	When 3 g of matter converted into energy, the energy released in kWh is
Answer» When $3 g$ of matter converted into energy, the energy released in $kWh$ is

Discussion

676.	Find the angle between the emergent ray and incident ray when the light goes from air to glass slab. Given μglass = 1.5
Answer» Find the angle between the emergent ray and incident ray when the light goes from air to glass slab. Given $μ_{g l a s s}$ = $1.5$

676.

Find the angle between the emergent ray and incident ray when the light goes from air to glass slab. Given μglass = 1.5

Answer»

Find the angle between the emergent ray and incident ray when the light goes from air to glass slab. Given $μ_{g l a s s}$ = $1.5$

Discussion

677.	Calculate the focal length of a reading glass of a person if this distance of distinct vision is 75 cm.
Answer» Calculate the focal length of a reading glass of a person if this distance of distinct vision is 75 cm.

Discussion

678.	(3) \lbrack MOL+1T^° A-'(4) \lbrack M2LT 2A-1129. What should be current in a circular coil formed bya wire of length 31.4 cm to produce a magneticfield of 1 x 104 T?ID YNo1(1) 0.8 A12) 8 A(3) 2 ATXLTX(4) 80 A30
Answer» (3) \lbrack MOL+1T^° A-'(4) \lbrack M2LT 2A-1129. What should be current in a circular coil formed bya wire of length 31.4 cm to produce a magneticfield of 1 x 104 T?ID YNo1(1) 0.8 A12) 8 A(3) 2 ATXLTX(4) 80 A30

Discussion

679.	Question 38A student focused the image of a candle flame on a white screen using a convex lens. He noted down the position of the candle screen and the lens as shown belowPosition of candle = 12.0 cmPosition of convex lens = 50.0 cmPosition of the screen = 88.0 cm(i) What is the focal length of the convex lens?(ii) Where will the image be formed if he shifts the candle towards the lens at a position of 31.0 cm?(iii) What will be the nature of the image formed if he further shifts the candle towards the lens?(iv) Draw a ray diagram to show the formation of the image in case (iii) as said above.
Answer» Question 38 A student focused the image of a candle flame on a white screen using a convex lens. He noted down the position of the candle screen and the lens as shown below Position of candle = 12.0 cm Position of convex lens = 50.0 cm Position of the screen = 88.0 cm (i) What is the focal length of the convex lens? (ii) Where will the image be formed if he shifts the candle towards the lens at a position of 31.0 cm? (iii) What will be the nature of the image formed if he further shifts the candle towards the lens? (iv) Draw a ray diagram to show the formation of the image in case (iii) as said above.

Discussion

680.	Why do you think the method of nuclear waste disposal involving its burial in rocks and burial in undergrounds is not agreeable to many people?
Answer» Why do you think the method of nuclear waste disposal involving its burial in rocks and burial in undergrounds is not agreeable to many people?

Discussion

681.	When an object is at distance u1 and u2 from a concave mirror, real and virtual images are formed respectively having same magnification. The focal length of the concave mirror is
Answer» When an object is at distance $u_{1}$ and $u_{2}$ from a concave mirror, real and virtual images are formed respectively having same magnification. The focal length of the concave mirror is

Discussion

682.	The particle with mass equal to 9.1 * 10-31 Kg and charge equal to -1.6 * 10-19 couloumbs is A) beta B) alpha C) gamma D) X
Answer» The particle with mass equal to 9.1 * 10^-31 Kg and charge equal to -1.6 * 10^-19 couloumbs is A) beta B) alpha C) gamma D) X

682.

The particle with mass equal to 9.1 * 10-31 Kg and charge equal to -1.6 * 10-19 couloumbs is A) beta B) alpha C) gamma D) X

Answer»

The particle with mass equal to 9.1 * 10^-31

Kg and charge equal to -1.6 * 10^-19 couloumbs is

A) beta

B) alpha

C) gamma

D) X

Discussion

683.	Why analogue system is not used in tv And mobile phone?
Answer» Why analogue system is not used in tv And mobile phone?

Discussion

684.	Speed of light in vacuum is kms−1
Answer» Speed of light in vacuum is $k m s^{- 1}$

Discussion

685.	The eyes of certain member of the repltile family pass a visual signal to the brain when the visual receptors are struck by photons of wavelength 850nm.if a total energy of 3.1410 j is required to trip the signal what is the minimum number of photons that must strike the receptor .
Answer» The eyes of certain member of the repltile family pass a visual signal to the brain when the visual receptors are struck by photons of wavelength 850nm.if a total energy of 3.1410 j is required to trip the signal what is the minimum number of photons that must strike the receptor .

Discussion

686.	Why non metal don't conduct electricity as they also have ions and free electrons ?
Answer» Why non metal don't conduct electricity as they also have ions and free electrons ?

Discussion

687.	What is vapour pressure?
Answer» What is vapour pressure?

Discussion

688.	how to bowl an out swing in cricke
Answer» how to bowl an out swing in cricke

Discussion

689.	A solenoid is formed by winding a long wire of length L over a cylinder of radius R if pitch of winding is W find self inductance of solenoid.
Answer» A solenoid is formed by winding a long wire of length L over a cylinder of radius R if pitch of winding is W find self inductance of solenoid.

Discussion

690.	The central portion of a lens is wrapped in black paper as shown below. An object is placed at 90 cm with the centre of curvature at 40 cm. What is the nature of image formed.
Answer» The central portion of a lens is wrapped in black paper as shown below. An object is placed at 90 cm with the centre of curvature at 40 cm. What is the nature of image formed.

690.

The central portion of a lens is wrapped in black paper as shown below. An object is placed at 90 cm with the centre of curvature at 40 cm. What is the nature of image formed.

Answer»

The central portion of a lens is wrapped in black paper as shown below. An object is placed at 90 cm with the centre of curvature at 40 cm. What is the nature of image formed.

Discussion

691.	If Ram is facing west and he sees a rainbow in front of him then, in which direction most probably the Sun is?
Answer» If Ram is facing west and he sees a rainbow in front of him then, in which direction most probably the Sun is?

Discussion

692.	ntif a virtual object is placed at focus of convex lens then where the image will form?n
Answer» ntif a virtual object is placed at focus of convex lens then where the image will form?n

Discussion

693.	when the momentum of a body decrease by 10% find how much % kinetic energy decreases?
Answer» when the momentum of a body decrease by 10% find how much % kinetic energy decreases?

Discussion

694.	43. The refractive index of the material of the prismof an angle 60 degree is 1.62 for sodium light. The angle of minimum deviation for this light is: Why cannot we use the formula: deviation= (refractive index - 1) angle of prism??
Answer» 43. The refractive index of the material of the prismof an angle 60 degree is 1.62 for sodium light. The angle of minimum deviation for this light is: Why cannot we use the formula: deviation= (refractive index - 1) angle of prism??

Discussion

695.	A Solenoid coil has 50 turns per cm along its length and a cross sectional area of 4cm square .Now 200 turns of another wire are wound round the first solenoid coaxially,the two coils are electrically insulated from each other .calculate the mutual inductance b/w the 2 coils
Answer» A Solenoid coil has 50 turns per cm along its length and a cross sectional area of 4cm square .Now 200 turns of another wire are wound round the first solenoid coaxially,the two coils are electrically insulated from each other .calculate the mutual inductance b/w the 2 coils

Discussion

696.	A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is (iii) held stationary inside the coil?
Answer» A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is (iii) held stationary inside the coil?

Discussion

697.	A step-down transformer connected to an AC mains supply of 220 V is made to operate at 11 V,44 W lamp. Ignoring power losses in the transformer, what is the current in the primary circuit?
Answer» A step-down transformer connected to an AC mains supply of $220 V$ is made to operate at $11 V, 44 W$ lamp. Ignoring power losses in the transformer, what is the current in the primary circuit?

Discussion

698.	In our eye, the image is formed at _______.
Answer» In our eye, the image is formed at _______.

Discussion

699.	For the vel of image = -m²V0If the Object is moving the magnication will vary then what value of m should we take while calculating it. is it Instantaneous m Or initial value of m
Answer» For the vel of image = -m²V0 If the Object is moving the magnication will vary then what value of m should we take while calculating it. is it Instantaneous m Or initial value of m

Discussion

700.	The distance between two charge is reduced to 2cm from original distance of 8cm.The force now will increase by which factor?
Answer» The distance between two charge is reduced to 2cm from original distance of 8cm.The force now will increase by which factor?

Discussion

Explore topic-wise InterviewSolutions in .

What are the major hazards of nuclear power plant?

the speed of the car is reduced by one-third of its original value in travelling a dis†an ce s. then the car is brought to rest in a minimum dis†an ce of

Which of the following components will be in parallel?

Give construction oc zener diode

A sample Q has half life 20 min. It decays by emitting alpha particle and beta particle with probability of 60% and 40% respectively.Initial sample of Q contains 1000 nuclei, then number of α− particle decay after one hour will be

The angle of incidence in medium 1 is 60∘ and angle of refraction in medium 2 is 30∘. Find 1μ2.

From a supply of identical capacitors rated 8uF ,250V the minimum number of capacitors required to form a composite 16 uF,1000V

At the time of short circuit, the current in the circuit

The function of a split ring in a dc motor is to

Why a conductor remains uncharged when current flows through it?

The percentage error in the measurement of thevoltage V is 3% and in the measurement of thecurrent is 2%. The percentage error in themeasurement of the resistance is(2) 2%(1) 3%(3) 1%(4) 5%

Label the eye parts correctly.i) Aqueous humour ii) vitreous humour iii) cornea iv) iris v) pupil

A current carrying wire is placed in the grooves of an insulating semi circular disc of radius 'R', as shown. The current enters at point A and leaves from point B. Determine the magnetic field at point D.

Question 22Pick the right combination of terms which has no fossil fuel.(a) Wind, ocean and coal(b) Kerosene, wind and tide(c) Wind, wood and sun(d) Petroleum, wood and sun

At what distance should an object be placed from a convex lens of focal length 18 cm to obtain an image at 36 cm from it on the other side? What will be the magnification produced in this case?

inductor is connected to a direct voltage source through a switch. Now a) Very large emf is induced in inductor whenswitch is closed b) Larger emf is induced when switch is opened c) Large emf is induced whether switch is closedor opened d)No emf is induced whether switch is closed oropened

What is the magnetic effect of electric current?

The driver of a bus, approaching a big wall, notices that the frequency of his bus’s horn changes from 420 Hz to 490 Hz when he hears it after it gets reflected from the wall. Find the speed of the bus, if the speed of the sound is 330 ms–1

why dos the sun appearr reddish early in moring and sky ppear dark instead o blue to an stronut

Rays parallel to the principal axis of a concave mirror meet at which point?

When 3 g of matter converted into energy, the energy released in kWh is

Find the angle between the emergent ray and incident ray when the light goes from air to glass slab. Given μglass ​= 1.5

Calculate the focal length of a reading glass of a person if this distance of distinct vision is 75 cm.

(3) \lbrack MOL+1T^° A-'(4) \lbrack M2LT 2A-1129. What should be current in a circular coil formed bya wire of length 31.4 cm to produce a magneticfield of 1 x 104 T?ID YNo1(1) 0.8 A12) 8 A(3) 2 ATXLTX(4) 80 A30

Why do you think the method of nuclear waste disposal involving its burial in rocks and burial in undergrounds is not agreeable to many people?

When an object is at distance u1 and u2 from a concave mirror, real and virtual images are formed respectively having same magnification. The focal length of the concave mirror is

The particle with mass equal to 9.1 * 10-31 Kg and charge equal to -1.6 * 10-19 couloumbs is A) beta B) alpha C) gamma D) X

Why analogue system is not used in tv And mobile phone?

Speed of light in vacuum is kms−1

The eyes of certain member of the repltile family pass a visual signal to the brain when the visual receptors are struck by photons of wavelength 850nm.if a total energy of 3.1410 j is required to trip the signal what is the minimum number of photons that must strike the receptor .

Why non metal don't conduct electricity as they also have ions and free electrons ?

What is vapour pressure?

how to bowl an out swing in cricke

A solenoid is formed by winding a long wire of length L over a cylinder of radius R if pitch of winding is W find self inductance of solenoid.

The central portion of a lens is wrapped in black paper as shown below. An object is placed at 90 cm with the centre of curvature at 40 cm. What is the nature of image formed.

If Ram is facing west and he sees a rainbow in front of him then, in which direction most probably the Sun is?

ntif a virtual object is placed at focus of convex lens then where the image will form?n

when the momentum of a body decrease by 10% find how much % kinetic energy decreases?

43. The refractive index of the material of the prismof an angle 60 degree is 1.62 for sodium light. The angle of minimum deviation for this light is: Why cannot we use the formula: deviation= (refractive index - 1) angle of prism??

A Solenoid coil has 50 turns per cm along its length and a cross sectional area of 4cm square .Now 200 turns of another wire are wound round the first solenoid coaxially,the two coils are electrically insulated from each other .calculate the mutual inductance b/w the 2 coils

A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is (iii) held stationary inside the coil?

A step-down transformer connected to an AC mains supply of 220 V is made to operate at 11 V,44 W lamp. Ignoring power losses in the transformer, what is the current in the primary circuit?

In our eye, the image is formed at _______.

For the vel of image = -m²V0If the Object is moving the magnication will vary then what value of m should we take while calculating it. is it Instantaneous m Or initial value of m

The distance between two charge is reduced to 2cm from original distance of 8cm.The force now will increase by which factor?

Find the angle between the emergent ray and incident ray when the light goes from air to glass slab. Given μglass = 1.5