67486 + Interview Questions in Secondary School in Physics

1.	Collect information about the medicalinstrument called Jaltarang and findout how the different notes areProduced in it.
Answer» The JAL tarang is a MELODIC percussion INSTRUMENT which originates from the Indian subcontinent. It was developed before 4th and 6th centuries CE. Hope I HELPED you and Mark me as brainllest. :)

1.

Collect information about the medicalinstrument called Jaltarang and findout how the different notes areProduced in it.

Answer»

The JAL tarang is a MELODIC percussion INSTRUMENT which originates from the Indian subcontinent. It was developed before 4th and 6th centuries CE.

Hope I HELPED you and Mark me as brainllest. :)

Discussion

2.	Covert s.i unit into cgs system.1m_cm1 metre equal to dash centimetre
Answer» 1 m =100 cm please MARK me BRAINLIEST MATE...

2.

Covert s.i unit into cgs system.1m_cm1 metre equal to dash centimetre

Answer»

1 m =100 cm

please MARK me BRAINLIEST MATE...

Discussion

3.	If velocity v of a particle moving on a straight lineas a function of time t is given as v = 5 - t (m/s)then the distance covered by the particle in first10 s is(1) 5 m(2)15 m
Answer» ANSWER: -5m/s Explanation: HOPE it will HELP you

3.

If velocity v of a particle moving on a straight lineas a function of time t is given as v = 5 - t (m/s)then the distance covered by the particle in first10 s is(1) 5 m(2)15 m

Answer»

ANSWER:

-5m/s

Explanation:

HOPE it will HELP you

Discussion

4.	Three similar bulbs when connected in serieswith a battery of V volt consume 9 W of powertogether. If these three bulbs are joined inparallel with the same battery of V volt thenpower consumed by the combination will be (1)9W(2) 27 W (3) 18 W(4) 81 W
Answer» ANSWER: HEY MATE here is your answer Explanation: 2 is CORRECT

4.

Three similar bulbs when connected in serieswith a battery of V volt consume 9 W of powertogether. If these three bulbs are joined inparallel with the same battery of V volt thenpower consumed by the combination will be (1)9W(2) 27 W (3) 18 W(4) 81 W

Answer»

ANSWER:

HEY MATE here is your answer

Explanation:

2 is CORRECT

Discussion

5.	Hola!!Calculate the angular speed of the (I) Second hand and (II) minute hand of a watch.
Answer» Solution :- We have to calculate the angular speed of (i) Second hand As second hand COMPLETE on ROTATION in 60 sec → FREQUENCY = 1/60 Now as we know that ω = 2πf $\omega = 2 \times \dfrac{22}{7} \times \dfrac{1}{60}$ $\omega = \dfrac{44}{420}$ $\omega = \dfrac{11}{105}$ $\omega = 0.104761$ $\omega = 0.1048 \: rad/sec$ $\large{\boxed{\sf{\omega = 1.048 \times 10^{-1} \: rad/sec}}}$ (ii) Minutes hand As MINUTE hand complete on rotation in 60 × 60 = 3600 sec → Frequency = 1/3600 Now as we know that ω = 2πf $\omega = 2 \times \dfrac{22}{7} \times \dfrac{1}{3600}$ $\omega = \dfrac{44}{25200}$ $\omega = \dfrac{11}{6300}$ $\omega = 0.0017460$ $\omega = 0.001746\: rad/sec$ $\large{\boxed{\sf{\omega = 1.746 \times 10^{-3}\: rad/sec}}}$

5.

Hola!!Calculate the angular speed of the (I) Second hand and (II) minute hand of a watch.

Answer»

Solution :-

We have to calculate the angular speed of

(i) Second hand

As second hand COMPLETE on ROTATION in 60 sec

→ FREQUENCY = 1/60

Now as we know that

ω = 2πf

$\omega = 2 \times \dfrac{22}{7} \times \dfrac{1}{60}$

$\omega = \dfrac{44}{420}$

$\omega = \dfrac{11}{105}$

$\omega = 0.104761$

$\omega = 0.1048 \: rad/sec$

$\large{\boxed{\sf{\omega = 1.048 \times 10^{-1} \: rad/sec}}}$

(ii) Minutes hand

As MINUTE hand complete on rotation in 60 × 60

= 3600 sec

→ Frequency = 1/3600

Now as we know that

ω = 2πf

$\omega = 2 \times \dfrac{22}{7} \times \dfrac{1}{3600}$

$\omega = \dfrac{44}{25200}$

$\omega = \dfrac{11}{6300}$

$\omega = 0.0017460$

$\omega = 0.001746\: rad/sec$

$\large{\boxed{\sf{\omega = 1.746 \times 10^{-3}\: rad/sec}}}$

Discussion

6.	An object moves 3 metres towards east then moves 4 meters towards north and again 3 metres towards east. Find the displacement
Answer» SIMPLE 3+4+3=10m DISPLACEMENT

Discussion

7.	Derive dimensional formula of bulk modulus
Answer» ANSWER: [ML-1T-2] is the FORMULA of BULK MODULUS

7.

Derive dimensional formula of bulk modulus

Answer»

ANSWER:

[ML-1T-2] is the FORMULA of BULK MODULUS

Discussion

8.	A.C 1000D 10The normal temperature of human body isసాధారణ మానవుని శరీర భాగానA137C 37D 47
Answer» the ANSWER to your QUESTION is option C ie 37 C hope this HELPS.

8.

A.C 1000D 10The normal temperature of human body isసాధారణ మానవుని శరీర భాగానA137C 37D 47

Answer»

the ANSWER to your QUESTION is option C ie

37 C

hope this HELPS.

Discussion

9.	A convex lens is made up of 3 different materials hw many images does it form
Answer» Answer: it only FORMS a single image in it.but the reflecting surface is CURVED INWARDS and the FIELD of view is large.

9.

A convex lens is made up of 3 different materials hw many images does it form

Answer»

Answer:

it only FORMS a single image in it.but the reflecting surface is CURVED INWARDS and the FIELD of view is large.

Discussion

10.	Why does convective heat transfer increase with velocity
Answer» Answer: Convection is the bulk motion of a fluid, which may occur naturally or forcibly. In this mode, heat transfer is because of the mass transfer. ... Hence heat transfer COEFFICIENT increases with the INCREASE in the velocity of the fluid. The same thing can be PROVED by dimensional analysis.

10.

Why does convective heat transfer increase with velocity

Answer»

Answer:

Convection is the bulk motion of a fluid, which may occur naturally or forcibly. In this mode, heat transfer is because of the mass transfer. ... Hence heat transfer COEFFICIENT increases with the INCREASE in the velocity of the fluid. The same thing can be PROVED by dimensional analysis.

Discussion

11.	Why does an athlete run first before taking a long jump?
Answer» ANSWER: Answer: An ATHLETE runs before jumping to gain momentum. Because it HELPS in jumping higher and longer because of inertia of motion gained due to the motion. When the athletes Jump they already have a forward motion that would be greater than that of a jump MADE from standing in one spot.

11.

Why does an athlete run first before taking a long jump?

Answer»

ANSWER:

Answer: An ATHLETE runs before jumping to gain momentum. Because it HELPS in jumping higher and longer because of inertia of motion gained due to the motion. When the athletes Jump they already have a forward motion that would be greater than that of a jump MADE from standing in one spot.

Discussion

12.	Explain conduction of heat in solids on the basis of kinetic theory of matter
Answer» Explanation: HEAT in solids is REALIZED because of the THERMAL vibrations of the atoms. More the kinetic energy of the atoms greater will be the temperature of the SOLID. ... This layer of atoms transfer the vibration to the next layer of atoms and so on. HENCE heat flows through the solid which we call conduction.

12.

Explain conduction of heat in solids on the basis of kinetic theory of matter

Answer»

Explanation:

HEAT in solids is REALIZED because of the THERMAL vibrations of the atoms. More the kinetic energy of the atoms greater will be the temperature of the SOLID. ... This layer of atoms transfer the vibration to the next layer of atoms and so on. HENCE heat flows through the solid which we call conduction.

Discussion

13.	54.The amount of heat produced in a wire does not dependఒక విద్యుత్ తీగలో ఒక పని ఆధారపడదు"A) Materialసూరలు)బి) Latestరంగు)C) ColourD) Thicknessముందన)
Answer» the amount of HEAT produced in a WIRE does not depend UPON COLOUR.

Discussion

14.	HELLO FRIENDSSOLVE this attachment question Right answer will mark as brainlist ✌️ ❎ ❎ Don't spam ❎ ❎
Answer» Answer: 3rd ONE is CORRECT... because.. it is the RELATION between DISPLACEMENT and VELOCITY.. ${v}^{2} = {u}^{2} + 2as$ ✌✌✌❤✌✌✌

14.

HELLO FRIENDSSOLVE this attachment question Right answer will mark as brainlist ✌️ ❎ ❎ Don't spam ❎ ❎

Answer»

Answer:

3rd ONE is CORRECT...

because.. it is the RELATION between DISPLACEMENT and VELOCITY..

${v}^{2} = {u}^{2} + 2as$

✌✌✌❤✌✌✌

Discussion

15.	D) None3.Which plant among the following is insectivorous ?క్రింది మొక్కలలో ఇది కీటకాహార మొక్కA) Hybiscusమంటారు)By TestC) Nepanthusసంధిస్)DT Aloeveraకలది)
Answer» ANSWER: the answer is nepanthus

15.

D) None3.Which plant among the following is insectivorous ?క్రింది మొక్కలలో ఇది కీటకాహార మొక్కA) Hybiscusమంటారు)By TestC) Nepanthusసంధిస్)DT Aloeveraకలది)

Answer»

ANSWER:

the answer is nepanthus

Discussion

16.	A formula one race car accelerates with a speed of 105 km/h in the first 15 minutes and the moves at 212 km/h in the next 20 minutes.find the distance traveled by the car?
Answer» ANSWER: This is SIMPLY TOTAL length COVERED by a car in total time I.e. 105+212= 317 i.e total DISTANCE covered by car is 317 km. Explanation: Distance simply means total length covered by a body

16.

A formula one race car accelerates with a speed of 105 km/h in the first 15 minutes and the moves at 212 km/h in the next 20 minutes.find the distance traveled by the car?

Answer»

ANSWER:

This is SIMPLY TOTAL length COVERED by a car in total time I.e.

105+212= 317

i.e total DISTANCE covered by car is 317 km.

Explanation:

Distance simply means total length covered by a body

Discussion

17.	How does the kinetic energy of molecules in a substance depend on its temperature
Answer» Answer: How does an increase in temperature affect the kinetic energy of molecules? Gas pressure is due to the molecules COLLIDING with the walls of the container. ... The AVERAGE kinetic energy of a gas particle is directly proportional to the temperature. An increase in temperature increases the SPEED in which the gas molecules move. All GASES at a GIVEN temperature have the same average kinetic energy.

17.

How does the kinetic energy of molecules in a substance depend on its temperature

Answer»

Answer:

How does an increase in temperature affect the kinetic energy of molecules?

Gas pressure is due to the molecules COLLIDING with the walls of the container. ... The AVERAGE kinetic energy of a gas particle is directly proportional to the temperature. An increase in temperature increases the SPEED in which the gas molecules move. All GASES at a GIVEN temperature have the same average kinetic energy.

Discussion

18.	If the magnification of an image is +3, then the image is _________.Erect (upright)RealInvertedSmaller than the object
Answer» ANSWER: ERECT..................

18.

If the magnification of an image is +3, then the image is _________.Erect (upright)RealInvertedSmaller than the object

Answer»

ANSWER:

ERECT..................

Discussion

19.	Vector question - class 11.
Answer» Answer: 10√7 Explanation: if we parallel shift f2 in such position that its tail intersects with the HEAD of f1 then the angle between the 2 vectors is 120 degree. now f2 - f1 = √f2² + f1² - 2f2.f1.cos 120 = √20² + 10² - 2(20)(10)(-1/2) ( cos120 = -1/2 ) = √400 + 100 + 200 = √700 = 10√7 hope it helped you thank you please mark it brainliest

19.

Vector question - class 11.

Answer»

Answer:

10√7

Explanation:

if we parallel shift f2 in such position that its tail intersects with the HEAD of f1 then the angle between the 2 vectors is 120 degree.

now f2 - f1 = √f2² + f1² - 2f2.f1.cos 120

= √20² + 10² - 2(20)(10)(-1/2) ( cos120 = -1/2 )

= √400 + 100 + 200

= √700

= 10√7

hope it helped you

thank you

please mark it brainliest

Discussion

20.	Name any two elements that are used in fabricating solar cells
Answer» Silicon and silver are the two ELEMENTS that HELP in fabricating the solar cells. One of the most important advantages of the MATERIALS is that they help to convert LIGHT into electric energy.

Discussion

21.	Name any two element that are used in fabricating solar cells
Answer» HLO MATE HERE IS UR ANSWER ❤. SILICON AND SILVER ❤ HOPE THIS WILL HELP U ✌✌ # RUDEDOLL❤❤

21.

Name any two element that are used in fabricating solar cells

Answer»

HLO MATE HERE IS UR ANSWER

❤. SILICON AND SILVER ❤

HOPE THIS WILL HELP U ✌✌

# RUDEDOLL❤❤

Discussion

22.	Types of chemical reaction s with matter and example s class ninth
Answer» Answer: There are four TYPES of CHEMICAL reactions as follows Explanation: 1 - Decomposition REACTION - Those reactions in which compounds are break down into smaller particles 2- Combination reaction - Those reactions in which compounds are formed by elements in presence of sunlight, Heat , electricity 3- Displacement reaction - The reaction in which compounds formed by giving of elements EX- 2HCl +Na -------- NaCl +Have Double Displacement Reaction - Those reactions in which elements are exchanged ex-H2SO4 + 2NAOH ------- NA2SO4 +2H2O

22.

Types of chemical reaction s with matter and example s class ninth

Answer»

Answer:

There are four TYPES of CHEMICAL reactions as follows

Explanation:

1 - Decomposition REACTION - Those reactions in which compounds are break down into smaller particles

2- Combination reaction - Those reactions in which compounds are formed by elements in presence of sunlight, Heat , electricity

3- Displacement reaction - The reaction in which compounds formed by giving of elements

EX- 2HCl +Na -------- NaCl +Have

Double Displacement Reaction -

Those reactions in which elements are exchanged

ex-H2SO4 + 2NAOH ------- NA2SO4 +2H2O

Discussion

23.	How can we define acceleration simply
Answer» Answer: EXPLANATION: Acceleration is the RATE of change in velocity per UNIT time.

23.

How can we define acceleration simply

Answer»

Answer:

EXPLANATION:

Acceleration is the RATE of change in velocity per UNIT time.

Discussion

24.	Enviromenttal consequence diagram
Answer» ANSWER: POLLUTION EXPLANATION: Pollution are very AFFECTED too ENVIRONMENT....

24.

Enviromenttal consequence diagram

Answer»

ANSWER:

POLLUTION

EXPLANATION:

Pollution are very AFFECTED too ENVIRONMENT....

Discussion

25.	In what 3 forms does inertia manifest
Answer» FRICTION AIR and resistance mark as BRAINLIEST

25.

In what 3 forms does inertia manifest

Answer»

FRICTION AIR and resistance

mark as BRAINLIEST

Discussion

26.	The radius of curvature of a spherical mirror is 20 cm what is its focal length
Answer» EXPLANATION: Radius of CURVATURE of the SPHERICAL mirror R=20cm we know that, R=2f f=R/2 =20/2 =10cm

26.

The radius of curvature of a spherical mirror is 20 cm what is its focal length

Answer»

EXPLANATION:

Radius of CURVATURE of the SPHERICAL mirror R=20cm

we know that, R=2f

f=R/2 =20/2 =10cm

Discussion

27.	Why covalent bond are bad conductor of electricity
Answer» ANSWER: Covalent compounds do not conduct ELECTRICITY because they are FORMED between non metal atoms by sharing of ELECTRONS. Covalent compounds have no FREE electrons and no ions and hence they do not conduct electricity.

27.

Why covalent bond are bad conductor of electricity

Answer»

ANSWER:

Covalent compounds do not conduct ELECTRICITY because they are FORMED between non metal atoms by sharing of ELECTRONS. Covalent compounds have no FREE electrons and no ions and hence they do not conduct electricity.

Discussion

28.	Why distance is one of the parameter for electrospinning
Answer» =Electrospinning parameters such as CONCENTRATION of the solution throughput rate, electrical field, collector, distance between the collector and the nozzle or DRUM can change the diameter and cross SECTION of nanofibers. During the electrospinning process, the SOLVENT evaporated from the nanofibers coagulates.✔✔

Discussion

29.	Why a resistor behave like an inductor at high frequency
Answer» Answer: because RESISTOR behaves like CONDUCTOR so resistor behave like an iductor at HIGH frequency.

29.

Why a resistor behave like an inductor at high frequency

Answer»

Answer:

because RESISTOR behaves like CONDUCTOR so resistor behave like an iductor at HIGH frequency.

Discussion

30.	The Wavelength of the second line of the Balmer series is 4861 armstrong. Calculate the wavelength of the first line.
Answer» ANSWER: hbhrui and I am so SORRY to HEAR about that I was

30.

The Wavelength of the second line of the Balmer series is 4861 armstrong. Calculate the wavelength of the first line.

Answer»

ANSWER:

hbhrui and I am so SORRY to HEAR about that I was

Discussion

31.	Fraunhofer diffraction
Answer» Answer: In optics, the FRAUNHOFER diffraction equation is used to model the diffraction of waves when the diffraction pattern is viewed at a long DISTANCE from the diffracting OBJECT, and also when it is viewed at the FOCAL plane of an imaging LENS.

31.

Fraunhofer diffraction

Answer»

Answer:

In optics, the FRAUNHOFER diffraction equation is used to model the diffraction of waves when the diffraction pattern is viewed at a long DISTANCE from the diffracting OBJECT, and also when it is viewed at the FOCAL plane of an imaging LENS.

Discussion

32.	A motor cyclist drives from A to B with a uniform speed of 30 km/h and returns backwith a speed of 20 km/h. Find the average speed.
Answer» ANSWER: AV. SPEED is = 2AB/time

32.

A motor cyclist drives from A to B with a uniform speed of 30 km/h and returns backwith a speed of 20 km/h. Find the average speed.

Answer»

ANSWER:

AV. SPEED is = 2AB/time

Discussion

33.	during a hard sneeze, your eyes may shut for 0.1 sec. If you are driving a car at 90km/hr.During such a sneeze how far does a car move in that time?
Answer» Answer: the CAR will TRAVEL for a distance if 0.1 m in that SNEEZING TIME

33.

during a hard sneeze, your eyes may shut for 0.1 sec. If you are driving a car at 90km/hr.During such a sneeze how far does a car move in that time?

Answer»

Answer:

the CAR will TRAVEL for a distance if 0.1 m in that SNEEZING TIME

Discussion

34.	Small circular thing you push to activate a machine
Answer» Answer: A small circular thing PUSH to activate a MACHINE in six WORDS is switch . It is an electrical COMPONENT that can MAKE or break a circuit , interrupting the current or diverting it from one conductor to another . A switch has one or more sets of contact , thus it may operate simultaneously or alternately .

34.

Small circular thing you push to activate a machine

Answer»

Answer:

A small circular thing PUSH to activate a MACHINE in six WORDS is switch . It is an electrical COMPONENT that can MAKE or break a circuit , interrupting the current or diverting it from one conductor to another . A switch has one or more sets of contact , thus it may operate simultaneously or alternately .

Discussion

35.	SI unit of plank's constant
Answer» Answer: SI UNIT of PLANK's CONSTANT Joule. hope it HELPS

35.

SI unit of plank's constant

Answer»

Answer:

SI UNIT of PLANK's CONSTANT Joule.

hope it HELPS

Discussion

36.	Identify 10 examples of rest and motion in our house
Answer» ANSWER: Table,chair,pillow,bed,GAS burner,CHARGER,mobile,laptop,clothes are at rest and fan we and PLANTS are in MOTION

36.

Identify 10 examples of rest and motion in our house

Answer»

ANSWER:

Table,chair,pillow,bed,GAS burner,CHARGER,mobile,laptop,clothes are at rest and fan we and PLANTS are in MOTION

Discussion

37.	What is the difference between airplane and aeroplane?
Answer» Answer: No STUFF is different but the type of ENGLISH used in the both words DIFFER as aeroplane is used in the BRITISH English and airplane is used with the base of American english

37.

What is the difference between airplane and aeroplane?

Answer»

Answer:

No STUFF is different but the type of ENGLISH used in the both words DIFFER as aeroplane is used in the BRITISH English and airplane is used with the base of American english

Discussion

38.	What is the difference between spring force and tension?
Answer» Answer: The tension force is directed along the length of the wire and PULLS EQUALLY on the OBJECTS on the opposite ends of the wire. The spring force is the force exerted by a compressed or STRETCHED spring upon any OBJECT that is attached to it.

38.

What is the difference between spring force and tension?

Answer»

Answer:

The tension force is directed along the length of the wire and PULLS EQUALLY on the OBJECTS on the opposite ends of the wire. The spring force is the force exerted by a compressed or STRETCHED spring upon any OBJECT that is attached to it.

Discussion

39.	Who said that atom is the smallest paricle of an element?
Answer» Answer: DALTON said that ATOM is the SMALLEST PARTICLE of an element....

39.

Who said that atom is the smallest paricle of an element?

Answer»

Answer:

DALTON said that ATOM is the SMALLEST PARTICLE of an element....

Discussion

40.	Why aeroplane seems small and slow as we see from the ground
Answer» When you SIT in an aero plane the earth itself is about 8 to 10 kilometers away, and appears to MOVE slowly. It's the same reason why celestial objects like MOON appears to move so slowly. ... The other illusion is caused by the SIZE of the AIRPLANE.

Discussion

41.	Who invented the mechanism of thermal theory of heat
Answer» ANSWER: James PRESCOTT joule is the founder of the MECHANISM

41.

Who invented the mechanism of thermal theory of heat

Answer»

ANSWER:

James PRESCOTT joule is the founder of the MECHANISM

Discussion

42.	Which type of energy possessed by a stretched rubber band
Answer» ELASTIC POTENTIAL ENERGY.

Discussion

43.	Uncertainty in x component of orbital angular momentum
Answer» Answer: YES Explanation: yes because momentum is the PRODUCT of velocity and MASS

43.

Uncertainty in x component of orbital angular momentum

Answer»

Answer:

YES

Explanation:

yes because momentum is the PRODUCT of velocity and MASS

Discussion

44.	a wire of length 4m is stretched so that its length becomes 8m. will its resistance and resistivity change ? And by how much ?
Answer» Given,A WIRE of length L and resistance R is STRETCHED so that its length its doubled Its resistance ALSO becomes twice of the INITIAL Resistance since resistance is directly proportional to length. Its resistivity does not change..because resistivity depends only on the nature of the SUBSTANCE but not on the length.

44.

a wire of length 4m is stretched so that its length becomes 8m. will its resistance and resistivity change ? And by how much ?

Answer»

Given,A WIRE of length L and resistance R is STRETCHED so that its length its doubled

Its resistance ALSO becomes twice of the INITIAL Resistance since resistance is directly proportional to length.

Its resistivity does not change..because resistivity depends only on the nature of the SUBSTANCE but not on the length.

Discussion

45.	Find the resultant of following displacement A =20Km 30°south of eastB = 50Km due westC= 40Km north EastD = 30Km 60° south of west Find Magnitude + Direction+ angleHai Koi Plz Iska Solution de do !!!!!?
Answer» ANSWER: EXPLANATION: Jaa KE gadhe dusri jagah serch KARO. Ye app waste hai

45.

Find the resultant of following displacement A =20Km 30°south of eastB = 50Km due westC= 40Km north EastD = 30Km 60° south of west Find Magnitude + Direction+ angleHai Koi Plz Iska Solution de do !!!!!?

Answer»

ANSWER:

EXPLANATION:

Jaa KE gadhe dusri jagah serch KARO. Ye app waste hai

Discussion

46.	Old answer the above
Answer» ANSWER: THNX for FREE point Explanation:

46.

Old answer the above

Answer»

ANSWER:

THNX for FREE point

Explanation:

Discussion

47.	If vector A+ vector B =vector A × vector B whar is the angle between A and B
Answer» 90 DEGREES as SIN of the angle is taken and sin90 is 1

Discussion

48.	How can the knowledge of relative density help in verifying the purity of substances
Answer» Explanation: Relative density is defined as a ratio of density of particular substance with that of water. If the relative density of a substance is less than 1 then it is less dense than the reference, if it is GREATER than 1 it is DENSER than the reference. If it is 1 then the densities are equal, that means equal volumes of the TWO substances have the same mass. When the reference material is water then a substance which has a relative density less than 1 will FLOAT and a substance with a relative density greater than 1 will sink. The temperature and PRESSURE must be specified for both the sample and the reference. In this way, the knowledge of relative density can help in verifying the purity of a substance.

48.

How can the knowledge of relative density help in verifying the purity of substances

Answer»

Explanation:

Relative density is defined as a ratio of density of

particular substance with that of water.

If the relative density of a substance is less than 1 then

it is less dense than the reference, if it is GREATER than 1 it is DENSER than

the reference. If it is 1 then the densities are equal, that means equal

volumes of the TWO substances have the same mass.

When the reference material is water then a substance which

has a relative density less than 1 will FLOAT and a substance with a relative

density greater than 1 will sink.

The temperature and PRESSURE must be specified for both the

sample and the reference.

In this way, the knowledge of relative density can help in

verifying the purity of a substance.

Discussion

49.	Please tell all the answers... it's mahh holiday hw
Answer» 15 answer REAL image: 1.Real image can be caught on screen 2.real image is always inverted and Virtual image:1.Virtual image cannot be caught on screen 2.Virtual image is always ERECTED.

Discussion

50.	Explain why the wall of a dam is made thicker at the bottom
Answer» ANSWER: more PRESSURE in the bottom HENCE more THICKER in the bottom Pressure is directly proportional to area Explanation:

50.

Explain why the wall of a dam is made thicker at the bottom

Answer»

ANSWER:

more PRESSURE in the bottom HENCE more THICKER in the bottom

Pressure is directly proportional to area

Explanation:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Collect information about the medicalinstrument called Jaltarang and findout how the different notes areProduced in it.​

Covert s.i unit into cgs system.1m_cm1 metre equal to dash centimetre ​

If velocity v of a particle moving on a straight lineas a function of time t is given as v = 5 - t (m/s)then the distance covered by the particle in first10 s is(1) 5 m(2)15 m​

Three similar bulbs when connected in serieswith a battery of V volt consume 9 W of powertogether. If these three bulbs are joined inparallel with the same battery of V volt thenpower consumed by the combination will be (1)9W(2) 27 W (3) 18 W(4) 81 W​

Hola!!Calculate the angular speed of the (I) Second hand and (II) minute hand of a watch.

Solution :-

(i) Second hand

(ii) Minutes hand

An object moves 3 metres towards east then moves 4 meters towards north and again 3 metres towards east. Find the displacement

Derive dimensional formula of bulk modulus

A.C 1000D 10The normal temperature of human body isసాధారణ మానవుని శరీర భాగానA137C 37D 47​

A convex lens is made up of 3 different materials hw many images does it form

Why does convective heat transfer increase with velocity

Why does an athlete run first before taking a long jump?

Explain conduction of heat in solids on the basis of kinetic theory of matter​

54.The amount of heat produced in a wire does not dependఒక విద్యుత్ తీగలో ఒక పని ఆధారపడదు"A) Materialసూరలు)బి) Latestరంగు)C) ColourD) Thicknessముందన)​

the amount of HEAT produced in a WIRE does not depend UPON COLOUR.

HELLO FRIENDSSOLVE this attachment question Right answer will mark as brainlist ✌️ ❎ ❎ Don't spam ❎ ❎ ​

D) None3.Which plant among the following is insectivorous ?క్రింది మొక్కలలో ఇది కీటకాహార మొక్కA) Hybiscusమంటారు)By TestC) Nepanthusసంధిస్)DT Aloeveraకలది)​

A formula one race car accelerates with a speed of 105 km/h in the first 15 minutes and the moves at 212 km/h in the next 20 minutes.find the distance traveled by the car?​

How does the kinetic energy of molecules in a substance depend on its temperature​

If the magnification of an image is +3, then the image is _________.Erect (upright)RealInvertedSmaller than the object

Vector question - class 11.​

Name any two elements that are used in fabricating solar cells​

Name any two element that are used in fabricating solar cells​

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Types of chemical reaction s with matter and example s class ninth​

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Enviromenttal consequence diagram

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The radius of curvature of a spherical mirror is 20 cm what is its focal length

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The Wavelength of the second line of the Balmer series is 4861 armstrong. Calculate the wavelength of the first line.

Fraunhofer diffraction​

A motor cyclist drives from A to B with a uniform speed of 30 km/h and returns backwith a speed of 20 km/h. Find the average speed.​

during a hard sneeze, your eyes may shut for 0.1 sec. If you are driving a car at 90km/hr.During such a sneeze how far does a car move in that time?​

Small circular thing you push to activate a machine

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What is the difference between spring force and tension?

Who said that atom is the smallest paricle of an element?

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Who invented the mechanism of thermal theory of heat

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a wire of length 4m is stretched so that its length becomes 8m. will its resistance and resistivity change ? And by how much ?

Find the resultant of following displacement A =20Km 30°south of eastB = 50Km due westC= 40Km north EastD = 30Km 60° south of west Find Magnitude + Direction+ angleHai Koi Plz Iska Solution de do !!!!!?

Old answer the above

If vector A+ vector B =vector A × vector B whar is the angle between A and B

How can the knowledge of relative density help in verifying the purity of substances​

Please tell all the answers... it's mahh holiday hw​

Explain why the wall of a dam is made thicker at the bottom​

Collect information about the medicalinstrument called Jaltarang and findout how the different notes areProduced in it.

Covert s.i unit into cgs system.1m_cm1 metre equal to dash centimetre

If velocity v of a particle moving on a straight lineas a function of time t is given as v = 5 - t (m/s)then the distance covered by the particle in first10 s is(1) 5 m(2)15 m

Three similar bulbs when connected in serieswith a battery of V volt consume 9 W of powertogether. If these three bulbs are joined inparallel with the same battery of V volt thenpower consumed by the combination will be (1)9W(2) 27 W (3) 18 W(4) 81 W

A.C 1000D 10The normal temperature of human body isసాధారణ మానవుని శరీర భాగానA137C 37D 47

Explain conduction of heat in solids on the basis of kinetic theory of matter

54.The amount of heat produced in a wire does not dependఒక విద్యుత్ తీగలో ఒక పని ఆధారపడదు"A) Materialసూరలు)బి) Latestరంగు)C) ColourD) Thicknessముందన)

HELLO FRIENDSSOLVE this attachment question Right answer will mark as brainlist ✌️ ❎ ❎ Don't spam ❎ ❎

D) None3.Which plant among the following is insectivorous ?క్రింది మొక్కలలో ఇది కీటకాహార మొక్కA) Hybiscusమంటారు)By TestC) Nepanthusసంధిస్)DT Aloeveraకలది)

A formula one race car accelerates with a speed of 105 km/h in the first 15 minutes and the moves at 212 km/h in the next 20 minutes.find the distance traveled by the car?

How does the kinetic energy of molecules in a substance depend on its temperature

Vector question - class 11.

Name any two elements that are used in fabricating solar cells

Name any two element that are used in fabricating solar cells

Types of chemical reaction s with matter and example s class ninth

Fraunhofer diffraction

A motor cyclist drives from A to B with a uniform speed of 30 km/h and returns backwith a speed of 20 km/h. Find the average speed.

during a hard sneeze, your eyes may shut for 0.1 sec. If you are driving a car at 90km/hr.During such a sneeze how far does a car move in that time?

How can the knowledge of relative density help in verifying the purity of substances

Please tell all the answers... it's mahh holiday hw

Explain why the wall of a dam is made thicker at the bottom