67486 + Interview Questions in Secondary School in Physics

1.	The Relative Density of a subta liquid is 1-2. When it is filled in 20cc bottleof mass 15a, What will be the mass ofthe bottle da
Answer» SORRY I don't know the ANSWER for your question PLEASE FOLLOW me follow me I will also follow you

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2.	From the roof of the train moving with a constant velocity 20m/s a person throws a ball
Answer» What we have to FIND in this QUESTION

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3.	A concave mirror of f is15 cm forms an image having twice the linear dimensions of the object what will be the position of the object
Answer» PHYSICSA concave mirror of focal length 15 cm FORMS an image having twice the linear DIMENSIONS of the OBJECT. The position of the object, when the image is virtual, will be :ANSWERf=−15cmm=+2(positionbecauseimagevirtual)m=− UV ⇒v=−2ubyusingmirrorformula−151 = (−2u)1 + u1 ⇒u=−7.5cmpositionofobjectis7.5cm Hence,option (B) is correct answer.

Discussion

4.	Two resistotrs of resistance 5ohm each is connected in parallel yhe effective resistance of this combination will be
Answer» the efferctive RESISTANCE will be 2.5 ohms Explanation:the effective resistance of RESISTORS CONNECTED in paralle is 1/R1 + 1/R2 =1/reqsince bothe the resistors resistance is 5 OHM therefore1/req= 1/5+1/5 = 2/5thus Req = 5/2 = 2.5 ohms

Discussion

5.	How far apart the two electrons be if the force between them equals the weight of an electron ? What in case of protons ?
Answer» istance between two ELECTRONS .F = Force EXERTED by one electrons to otherF = Ke²/r²weight of ELECTRON = mga/c to question ,F = mgKe2/r² = mg9×10^9 × {1.6 × 10^-19 }²/r² = 9.1 × 10^-31 × 10r² ={ 9 ×2.56/9.1 } × 10^-38+30+9= 25.31r = 5.03 m

Discussion

6.	Pressure gradient has the same dimensions as that of
Answer» tion:Presure gradient has same DIMENSION as that of FORCE DENSITY.

Discussion

7.	Can ever the rms value be equal to the peak value of an ac?
Answer» YES, when the a.c. is a square wave, r.m.s VALUE, average value and PEAK value of a.c. are EQUAL Choiec (d) is correct.

Discussion

8.	Current which flows with a constant magnitude in same fixed direction is known as _________ .
Answer» tion:In projectile MOTION, a constant force mg always acts downwards on the projectile which CAUSES it to move in a PARABOLIC path. In 1-D motion, a constant force acts in the same direction causes it to move in a straight LINE. So both straight line and parabolic path are correctplease mark as brainliest

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9.	In ac generator _________ is converted into electrical energy of alternating form.
Answer» ..I am here to help you....Answer:An AC GENERATOR is an electric generator that converts mechanical energy into ELECTRICAL energy of ALTERNATING formI hope this answer was HELPFUL....Please mark me as Brainlest

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10.	Which is more dangerous 220 ac or 220 dc and why?
Answer» is more DANGEROUS than 220 AC.

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11.	Current in the inductive a.c. circuit _________ the voltage.
Answer» CURRENT in INDUCTIVE CIRCUIT LAGS the VOLTAGE

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12.	Average or mean value of ac over a half cycle is _________ .
Answer» PLZ MARK me as the BRAINLIEST

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13.	Capacitive reactance Xc increases with _________ in frequency of ac and current in the capacitive ac circuit _________ the ac voltage.
Answer» TION:FIRST -DECREASE............ SECOND – INCREASE

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14.	Capacitive reactance increases with _________ in frequency of ac.
Answer» noooooooooooooooooooooo

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15.	Rms or virtual value of alternating current is _________ .
Answer» have a GOOD DAY and TAKE CARE of yourself and your FAMILY

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16.	Electric current that varies in magnitude dontinuously and reverses its direction periodically is known as _________ .
Answer» ALTERNATING CURRENT or AC current

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17.	Average value of ac over a complete cycle _________ .
Answer» AVERAGE VALUE of AC over a COMPLETE CYCLE _________ .

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18.	Plz ans it????????????corect ans as brainlist
Answer» 2/3 ML CUBE .

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19.	Plz ans it????????????????????????
Answer» ) d is the CORRECT ANSWER BRO givee THANKS PLZ

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20.	Find equivalent resistence
Answer» This is the BEST solution.HOPE IT HELPS!!!!PLEASE MAKE IT BRAINLIEST ANSWER!!!!!

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21.	Plz ans it ???????????????
Answer» rrect Explanation:MARK my ANSWER to BRAINLIEST PLEASE... humble request...

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22.	A glass container is sealed with gas at 0.800 atm pressure and 25°C. The glass container can sustain pressure of 2 atm. Calculate the temprature to which gas cab be heated before bursting the container?
Answer» n :Given :-▪ INITIAL pressure of gas = 0.8atm▪ Initial temperature of gas = 25°C▪ Max. pressure can be sustained by glass container = 2atmTo Find :-▪ Temperature of gas at pressure of magnitude 2atmConcept :-This question is completely BASED on concept of 'Gay Lussac's law'.As per Gay Lussac's law, At constant volume, pressure of a FIXED amount of gas varies directly with the temperature.Mathematically,CALCULATION :Note: K = °C + 273

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23.	Tell the answer pls
Answer» tion:pta HAI kya KISI ko MAI to ABHI beginer hu

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24.	Plz ans the question
Answer» C) is the CORRECT ANSWER BRO

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25.	We are able to see objects around us due to _ reflection?
Answer» yesExplanation:since gets REFLECTED from the object it TOUCHES and REACHES the EYE of the OBSERVER

Discussion

26.	The identical bodies are made of material for which the heat capacity inceases by temperture one of thesr is at 100℃ while the another one is 0℃ if the two bodies are brought into contact, then,assuming no heat loss,the finial common temperature is
Answer» HEAT capacity RISE with temperature for LESS temperature will drop is higher temperature body when an equal AMOUNT of heat is TRANSFER from lower temperature body which rises more in temperature has the final temperature will be higher than 50 mark the brilliant please

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27.	A cyclinder conducter of the length l and area
Answer» what is your QUESTION EXPLANATION:

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28.	When an AC voltage of 220 V is applied to the capacitor C (a) the maximum voltage between plates is 220 V. (b) the current is in phase with the applied voltage. (c) the charge on the plates is not in phase with the applied voltage. (d) power delivered to the capacitor is zero.
Answer» A) is the CORRECT ANSWER BRO

Discussion

29.	As the frequency of an ac circuit increases, the current first increases and then decreases. What combination of circuit elements is most likely to comprise the circuit? [NCERT Exemplar] (a) Inductor and capacitor. (b) Resistor and inductor. (c) Resistor and capacitor. (d) Inductor only.
Answer» As the frequency of an ac circuit INCREASES, the current first increases and then decreases. What combination of circuit ELEMENTS is most likely to comprise the circuit Inductor and capacitor. resistor in a circuit IMAX will be maximum when reactance is minimum. on icreasing frequency in LCR circuit the reactance.XL = 2πvL due to inductance will increases and due to capacitance it will decreases.Z = impedance of the circuit. AS frequency increases, z decreses and at a certain VALUE of frquency known resonant frequency Vc impedance Z is minimum.current varries inverslay with impedance. so option 1 and 2 are correct.

Discussion

30.	Which of the following combinations should be selected for better tuning of an LCR circuit used for communication? [NCERT Exemplar] (a) R = 20, L= 1.5 H, C = 35 μF. (b) R = 25 , L = 2.5 H, C = 45 μF. (c) R = 15 , L = 3.5 H, C = 30 μF. (d) R = 25 , L = 1.5 H, C = 45 μF.
Answer» GIVEN = (a) R = 20, L= 1.5 H, C = 35 μF. (b) R = 25 , L = 2.5 H, C = 45 μF. (c) R = 15 , L = 3.5 H, C = 30 μF. (d) R = 25 , L = 1.5 H, C = 45 μF. to find = suitable combination for better tuning an LCR.solution, for better tuning of an LCR CIRCUIT used for communication MUST be posesed high quality factor of resonnce.so, Q = 1/R , in option 3rd, the Q factor is highest.Q = 1/15 Q = 22.7 the value of Q in case of a , b and d can be 10.35,9.42 and 7.30 respectively.the highest value of Q is present in OPTION C so option C is the correct answer.

Discussion

31.	An alternating current generator has an internal resistance Rg and an internal reactance Xg. It is used to supply power to a passive load consisting of a resistance Rg and a reactance XL For maximum power to be delivered from the generator to the load, the value of XL is equal to [NCERT Exemplar] (a) zero. (b) Xg. (c) -Xg. (d) Rg.
Answer» I can't UNDERSTAND the MEANING of QUESTION

Discussion

32.	Electrical energy is transmitted over large distances at high alternating voltages. Which of the following statements is not correct? (a) For a given power level, there is a lower current. (b) Lower current implies less power loss. (c) Transmission lines can be made thinner. (d) It is easy to reduce the voltage at the receiving end using step-down transformers.
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33.	An inductor of reactance 1 Ω and a resistor of 2 Ω are connected in series to the terminals of a 6 V (rms) a.c. source. The power dissipated in the circuit is [NCERT Exemplar] (a) 8 W. (b) 12 W. (c) 14.4 W. (d) 18 W.
Answer» 14.4W (C) is CORRECT ANSWER

Discussion

34.	When a voltage measuring device is connected to AC mains, the meter shows the steady input voltage of 220 V. This means [NCERT Exemplar] (a) input voltage cannot be AC voltage, but a DC voltage. (b) maximum input voltage is 220V. (c) the meter reads not v but < v² > and is . calibrated to read √< v² > . (d) the pointer of the meter is stuck by some mechanical defect.
Answer» The OPTION C is CORRECT ANSWER.....

Discussion

35.	For an ideal-step-down transformer, the quantity which is constant for both the coils is (a) current in the coils (b) voltage across the coils (c) resistance of coils (d) power in the coils
Answer» d) is the CORRECT ANSWER BRO

Discussion

36.	The output of a step-down transformer is measured to be 24 V when connected to a 12 watt light bulb. The value of the peak current is [NCERT Exemplar] (a) 1/√2 A. (b) √2A. (c) 2 A. (d) 2√2 A.
Answer» (a) 1/√2Explanation:GIVEN:P=12 and V=24Find: I• PEAK CURRENT Now,P=VI I=P/V I=12/24=1/2Then Irms=I•/√2 I•=Irms×√2 I•=1/2×√2 I•=1/√2A. THANKYOU

Discussion

37.	To reduce the resonant frequency in an LCR series circuit with a generator [NCERT Exemplar] (a) the generator frequency should be reduced. (b) another capacitor should be added in parallel to the first. (c) the iron core of the inductor should be removed. (d) dielectric in the capacitor should be removed.
Answer» d7skyliskgjdjdjgsngsjjsjgnfnsfsgnsjsjsfnszfnsjngjgjdjgjsjgjgjsjgjgkdghdkhkdkhdkdhkdgkhdkdhkhdkhdkdhkhdkyddkykydurdykkydkydkdhlyfldudoylydkydsgsjjsjgnfnsfsgnsjsjsfnszfnsjngjgjdjgjsjgjgjsjgjgkdghdkhkdkhdkdhkdgkhdkdhkhdkhdkdhkhdkyddkykydurdykkydkydkdhlyfldudoylydkydskykysieyiyeiyeiyekyeoyeoye7444 and 5dyksiydskydkydkydydydyfyfyfyrufufulfu uoysdilddkdkydkydpjsljgsjgdyditsyidyddkydiydykd5dyldoye5kydyk4 dykeoyeyeyoely jfpufkydkyekeyeoyekyeoyeoy iysiydoyelueludpurudoydoyelyeyoruldoururulrlyrulrlydyleluelyeududoy lhskydykdlurufluflu

Discussion

38.	If the rms current in a 50 Hz ac circuit is 5 A, the value of the current 1/300 seconds after its value becomes zero is [NCERT Exemplar] (a) 5√2A (b) 5 \sqrt{3 / 2}A (c) 5/6 A (d) 5√2A
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39.	Two system of two system charge q=+2c and q=2c are seprateted by a distance 15cm. what is the net charge and the dipole move of the system
Answer» Hi✌✌✌if you give Two SYSTEM of two system charge q=+2c and q=-2c aredipole MOMENT(P) =2ql=2×2×15=60 C-cmor O. 6 C-Mand net charge of the system is zero... ABSOLUTELY it is helpful for you...

Discussion

40.	An object with a mass of 17.5 kg accelerates 8.3 m/s2 when an unknown force is applied to it. What is the amount of the force?
Answer» O FIND,FORMULA USED,SOLUTION,HOPE it helps you.....PLEASE mark me as a BRAIN list.....I WILL FOLLOW YOU.....

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41.	I walk 1 mile south 1 mile west 1 mile north where I am
Answer» I am am I mile WEST away from the starting point. EXPLANATION:First you TRAVEL at 1 mile south , then 1 mile west now you are 1 mile south west Now you travel 1 mile NORTH It simple that you are 1 mile west

Discussion

42.	Why lens it is considered sometime positive and sometimes negative
Answer» eflection the image will be formed or observed at a POINT because of the image POSITION the LENS is CONSIDERED as positive or NEGATIVE.

Discussion

43.	As shown in adjacent figure, two plane mirrors M1 and M2 are inclined to each other at an angle 75° (angle M1OM2).Incident ray AB makes an angle of incidence  on M1. This ray after reflection at B on M1 and further at C on M2 travels along the direction CD, such that path CD is parallel to M1. Then angle  is _____.
Answer» In your question θ=60Explanation:Please KEEP point E as same in the questionAngle EBC=θAngle EBO=90Angle CBO=90-θAngle OCB=75In ∆COB,75+75+90-θ=180θ=60IF YOU LIKE MY ANSWER PLEASE MARK AS BRAINLIEST

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44.	Plz ans it?????????????
Answer» B) is the CORRECT ANSWER BRO

Discussion

45.	If an empty density bottle mass is 30.2 g... liquid filled bottle is 66.2gWater filled bottle
Answer» 36gExplanation: mass of water filled in bottle =mass of LIQUID filled bottle -mass if EMPTY bottle = 66.2g-30.2g =36g

Discussion

46.	Pl ans it???????????????????????????????/
Answer» ggmculchldykdykdktd??????????????????????????

Discussion

47.	An object with a mass of 5.0 kg accelerates 18.0 m/s2 when an unknown force is applied to it. What is the amount of the force?
Answer» 90 NExplanation:Force=mass×accelerationForce=5×18=90N

Discussion

48.	On 05/04/2020 at 9.00 pm as per our pm PM 's request we shut down house lights and used candle, torch to show our unity. How this lights off has benefited electricity consumption?
Answer» It was MEANT to show UNITY not save ELECTRICITY. PLUS people are soo chaosed that they started burning firecrackers

Discussion

49.	The speedometer readings of a car are shown below. Find the acceleration of the car and its displacement. Time Speedometer 9:25 am. 36 km/h 9:45 am 72 km/h
Answer» tion:Given:Time = t= 9.45 -9.25=20min= 20x60 secondsInitial velocity = 36km/h = 36x 5/18=10 m/sFinal velocity = V= 72km/h=72x 5/18=20m/sAcceleration= a=V-u/t=20-10/20x60=10/20x60=1/120=0.008m/s2THEREFORE acceleration of the car is 0.008m/s2From SECOND EQUATION of MOTION:V^2-u^2=2asS=V^2-u^2/2aS=(20×20)-(10×10)/20.008S=(400_100)/20.008=300/2×0.008 =150/0.008 =150*1000/8 =18.75x 1000 =1875000/100=18750m Magnitude of DISPLACEMENT is 18750mthanks mark me as brilliant

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50.	Plz ans it?????????????????/
Answer» D) is the CORRECT ANSWER BRO

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The Relative Density of a subta liquid is 1-2. When it is filled in 20cc bottleof mass 15a, What will be the mass ofthe bottle da​

From the roof of the train moving with a constant velocity 20m/s a person throws a ball

A concave mirror of f is15 cm forms an image having twice the linear dimensions of the object what will be the position of the object

Two resistotrs of resistance 5ohm each is connected in parallel yhe effective resistance of this combination will be

How far apart the two electrons be if the force between them equals the weight of an electron ? What in case of protons ?

Pressure gradient has the same dimensions as that of

Can ever the rms value be equal to the peak value of an ac?

Current which flows with a constant magnitude in same fixed direction is known as _________ .

In ac generator _________ is converted into electrical energy of alternating form.

Which is more dangerous 220 ac or 220 dc and why?

Current in the inductive a.c. circuit _________ the voltage.

Average or mean value of ac over a half cycle is _________ .

Capacitive reactance Xc increases with _________ in frequency of ac and current in the capacitive ac circuit _________ the ac voltage.

Capacitive reactance increases with _________ in frequency of ac.

Rms or virtual value of alternating current is _________ .

Electric current that varies in magnitude dontinuously and reverses its direction periodically is known as _________ .

Average value of ac over a complete cycle _________ .

Plz ans it????????????corect ans as brainlist

Plz ans it????????????????????????

Find equivalent resistence​

Plz ans it ???????????????

A glass container is sealed with gas at 0.800 atm pressure and 25°C. The glass container can sustain pressure of 2 atm. Calculate the temprature to which gas cab be heated before bursting the container?​

Tell the answer pls​

Plz ans the question

We are able to see objects around us due to _ reflection?

The identical bodies are made of material for which the heat capacity inceases by temperture one of thesr is at 100℃ while the another one is 0℃ if the two bodies are brought into contact, then,assuming no heat loss,the finial common temperature is

A cyclinder conducter of the length l and area

When an AC voltage of 220 V is applied to the capacitor C (a) the maximum voltage between plates is 220 V. (b) the current is in phase with the applied voltage. (c) the charge on the plates is not in phase with the applied voltage. (d) power delivered to the capacitor is zero.

As the frequency of an ac circuit increases, the current first increases and then decreases. What combination of circuit elements is most likely to comprise the circuit? [NCERT Exemplar] (a) Inductor and capacitor. (b) Resistor and inductor. (c) Resistor and capacitor. (d) Inductor only.

Which of the following combinations should be selected for better tuning of an LCR circuit used for communication? [NCERT Exemplar] (a) R = 20, L= 1.5 H, C = 35 μF. (b) R = 25 , L = 2.5 H, C = 45 μF. (c) R = 15 , L = 3.5 H, C = 30 μF. (d) R = 25 , L = 1.5 H, C = 45 μF.

An inductor of reactance 1 Ω and a resistor of 2 Ω are connected in series to the terminals of a 6 V (rms) a.c. source. The power dissipated in the circuit is [NCERT Exemplar] (a) 8 W. (b) 12 W. (c) 14.4 W. (d) 18 W.

For an ideal-step-down transformer, the quantity which is constant for both the coils is (a) current in the coils (b) voltage across the coils (c) resistance of coils (d) power in the coils

The output of a step-down transformer is measured to be 24 V when connected to a 12 watt light bulb. The value of the peak current is [NCERT Exemplar] (a) 1/√2 A. (b) √2A. (c) 2 A. (d) 2√2 A.

If the rms current in a 50 Hz ac circuit is 5 A, the value of the current 1/300 seconds after its value becomes zero is [NCERT Exemplar] (a) 5√2A (b) 5 \sqrt{3 / 2}A (c) 5/6 A (d) 5√2A

Two system of two system charge q=+2c and q=2c are seprateted by a distance 15cm. what is the net charge and the dipole move of the system​

An object with a mass of 17.5 kg accelerates 8.3 m/s2 when an unknown force is applied to it. What is the amount of the force?

I walk 1 mile south 1 mile west 1 mile north where I am

Why lens it is considered sometime positive and sometimes negative ​

Plz ans it?????????????

If an empty density bottle mass is 30.2 g... liquid filled bottle is 66.2gWater filled bottle​

Pl ans it???????????????????????????????/

An object with a mass of 5.0 kg accelerates 18.0 m/s2 when an unknown force is applied to it. What is the amount of the force?

On 05/04/2020 at 9.00 pm as per our pm PM 's request we shut down house lights and used candle, torch to show our unity. How this lights off has benefited electricity consumption? ​

The speedometer readings of a car are shown below. Find the acceleration of the car and its displacement. Time Speedometer 9:25 am. 36 km/h 9:45 am 72 km/h

Plz ans it?????????????????/

The Relative Density of a subta liquid is 1-2. When it is filled in 20cc bottleof mass 15a, What will be the mass ofthe bottle da

Capacitive reactance Xc increases with _ in frequency of ac and current in the capacitive ac circuit _ the ac voltage.

Find equivalent resistence

A glass container is sealed with gas at 0.800 atm pressure and 25°C. The glass container can sustain pressure of 2 atm. Calculate the temprature to which gas cab be heated before bursting the container?

Tell the answer pls

Two system of two system charge q=+2c and q=2c are seprateted by a distance 15cm. what is the net charge and the dipole move of the system

Why lens it is considered sometime positive and sometimes negative

If an empty density bottle mass is 30.2 g... liquid filled bottle is 66.2gWater filled bottle

On 05/04/2020 at 9.00 pm as per our pm PM 's request we shut down house lights and used candle, torch to show our unity. How this lights off has benefited electricity consumption?