67486 + Interview Questions in Secondary School in Physics

1.	A particle of mass m is moving along a trajectory given byx = x₀ + a cos ω₁ty = y₀ + b sin ω₂tThe torque, acing on the particle about the origin, at t = 0 is:(A) my₀aω₁² kˆ(B) m(-x₀b + y₀a)ω₁² kˆ(C) -m(-x₀bω₂² - y₀aω₁²)kˆ(D) Zero
Answer» ANSWER: D ) ZERO Explanation: the SIN and COS is = o x.y is ALSO 0

1.

A particle of mass m is moving along a trajectory given byx = x₀ + a cos ω₁ty = y₀ + b sin ω₂tThe torque, acing on the particle about the origin, at t = 0 is:(A) my₀aω₁² kˆ(B) m(-x₀b + y₀a)ω₁² kˆ(C) -m(-x₀bω₂² - y₀aω₁²)kˆ(D) Zero

Answer»

ANSWER:

D ) ZERO

Explanation:

the SIN and COS

is = o

x.y

is ALSO 0

Discussion

2.	In an experiment, the resistance of a material is plotted as a function of temperature (in some range). As shown in the figure, it is a straight line. One may conclude that:
Answer» ANSWER: it just CONCLUDES that when temperature increases then the average kinetic ENERGY of the electrons in the CONDUCTING material increases so the resistance also increases

2.

In an experiment, the resistance of a material is plotted as a function of temperature (in some range). As shown in the figure, it is a straight line. One may conclude that:

Answer»

ANSWER:

it just CONCLUDES that when temperature increases then the average kinetic ENERGY of the electrons in the CONDUCTING material increases so the resistance also increases

Discussion

3.	A stationary source emits sound waves of frequency 500 Hz. Two observers moving along a line passing through the source detect sound to be of frequencies 480 Hz and 530 Hz. Their respective speeds are, in ms⁻¹(Given speed of sound = 300 m/s)(A) 16, 14 (B) 12, 16(C) 8, 18 (D) 12, 18
Answer» ANSWER is D 12and 18m/s

3.

A stationary source emits sound waves of frequency 500 Hz. Two observers moving along a line passing through the source detect sound to be of frequencies 480 Hz and 530 Hz. Their respective speeds are, in ms⁻¹(Given speed of sound = 300 m/s)(A) 16, 14 (B) 12, 16(C) 8, 18 (D) 12, 18

Answer»

ANSWER is D

12and 18m/s

Discussion

4.	Human audible wavelength range in metres
Answer» 17 m to 1.7 CM is the HUMAN AUDIBLE RANGE

Discussion

5.	If specific gravity of steel is 7.82 then what is its density in SI ?
Answer» ANSWER: 7820 Explanation: IN SI UNITS DENSITY OF WATER TAKEN 1000 SO ANSWER IS 7820(Density of object)

5.

If specific gravity of steel is 7.82 then what is its density in SI ?

Answer»

ANSWER:

7820

Explanation:

IN SI UNITS DENSITY OF WATER TAKEN 1000

SO ANSWER IS 7820(Density of object)

Discussion

6.	Who discovered cyclotron
Answer» $\huge{\underline{\underline{\color{darkblue}{\bf{Answer}}}}}$ CYCLOTRON was DISCOVERED by E.O LAWRENCE ✔✔ he BELONGS to AMERICA

6.

Who discovered cyclotron

Answer»

$\huge{\underline{\underline{\color{darkblue}{\bf{Answer}}}}}$

CYCLOTRON was DISCOVERED by

E.O LAWRENCE ✔✔

he BELONGS to AMERICA

Discussion

7.	What will be the displacement and distance covered in a circular track of diameter 200m at the end of 2.20 min if velocity is 15.71 m/s?
Answer» EXPLANATION: DUE to presence of CIRCULAR TRACK the distance will be it's circumference........

7.

What will be the displacement and distance covered in a circular track of diameter 200m at the end of 2.20 min if velocity is 15.71 m/s?

Answer»

EXPLANATION:

DUE to presence of CIRCULAR TRACK the distance will be it's circumference........

Discussion

8.	Variation of A.C. Voltage (V) and Current (1) with time (t) through an electriccomponent is given as:V = 312 sin (314t);I = 312 sin (3141 + /) This component is(A) Resistance(B) Capacitor(C) Inductor(D) None of these
Answer» Answer: B.capacitor Explanation: because in capacitor the current is LEADING by some ANGLE the RMS current eq shows + it means leading

8.

Variation of A.C. Voltage (V) and Current (1) with time (t) through an electriccomponent is given as:V = 312 sin (314t);I = 312 sin (3141 + /) This component is(A) Resistance(B) Capacitor(C) Inductor(D) None of these

Answer»

Answer:

B.capacitor

Explanation:

because in capacitor the current is LEADING by some ANGLE the RMS current eq shows + it means leading

Discussion

9.	How does a cotton piece of cloth get wetted when only one end is in water ?
Answer» That's DUE to affinity of WATER or AKA any liquid TOWARDS the cloth..

Discussion

10.	-Draw a labelled diagram for forward wiresand reverse wires p-n Junction-diode
Answer» ANSWER: I HOPE this PIC will HELP you

10.

-Draw a labelled diagram for forward wiresand reverse wires p-n Junction-diode

Answer»

ANSWER:

I HOPE this PIC will HELP you

Discussion

11.	Draw a schematic diagram of circuit.Consisting of the cell of 4 v each, 6 ohm, 10 ohm, 14ohm, resister and plug. draw for parallel andseries connection. find-(a) current through each resistor(b) total current in the circuit
Answer» ANSWER: PLEASE MARK me as BRAINLIEST

11.

Draw a schematic diagram of circuit.Consisting of the cell of 4 v each, 6 ohm, 10 ohm, 14ohm, resister and plug. draw for parallel andseries connection. find-(a) current through each resistor(b) total current in the circuit

Answer»

ANSWER:

12.	if the energy in a longitudinal wave travels from South to North the particles of the medium would-be vibrating in which direction
Answer» EXPLANATION: ALOHA ! TOWARDS North Thank you @ *Twilight* ASTRO** ✌️☺️

if the energy in a longitudinal wave travels from South to North the particles of the medium would-be vibrating in which direction

Answer»

EXPLANATION:

@ Twilight *ASTRO*** ✌️☺️

Discussion

13.	How much heat is absorbed by 1 kg ice at - 12°సి to become steam at 112°c
Answer» Answer: There is ice of 1kg at 12 DEGREE to became steam at 11 2 degree. 112-12=100 Therefore it observed 100 degree

13.

How much heat is absorbed by 1 kg ice at - 12°సి to become steam at 112°c

Answer»

Answer:

There is ice of 1kg at 12 DEGREE to became steam at 11 2 degree.

112-12=100

Therefore it observed 100 degree

Discussion

14.	A ship sense of sound signal to the seabed and receives the echo after five seconds if the depth of the sea at the place is 3750 m find the speed of the sound in the sea water
Answer» Answer: GIVEN: Ship receives echo from OCEAN bed after 5 seconds. DEPTH at that point is 3750 m To find: Speed of sound in water Concept: Sound waves released from under-surface of ships travel down and reach ocean bed. From there, they undergo reflection and come upwards and analysed by the ship. Hence the wave actually travels twice the depth of ocean bed. Calculation: Let speed of sound in water be v. $\sf{ \therefore \: 2d = v \times t}$ $\sf{ = > 2 \times 3750 = v \times 5}$ $\sf{ = > v = \dfrac{2 \times 3750}{5}}$ $\sf{ = > v = 2 \times 750}$ $\sf{ = > v = 1500 \: m {s}^{ - 1}}$ So final answer is: $\boxed{ \sf{ \bold{ \red{ \huge{v = 1500 \: m {s}^{ - 1}}}}}}$ Additional INFORMATION: This method is used in SONAR to detect depth of sea bed. This is used to detect ENEMY submarines and it's depth. It helps to locate colony of fishes in a particular region of the sea.

14.

A ship sense of sound signal to the seabed and receives the echo after five seconds if the depth of the sea at the place is 3750 m find the speed of the sound in the sea water

Answer»

Answer:

GIVEN:

Ship receives echo from OCEAN bed after 5 seconds. DEPTH at that point is 3750 m

To find:

Speed of sound in water

Concept:

Sound waves released from under-surface of ships travel down and reach ocean bed. From there, they undergo reflection and come upwards and analysed by the ship.

Hence the wave actually travels twice the depth of ocean bed.

Calculation:

Let speed of sound in water be v.

$\sf{ \therefore \: 2d = v \times t}$

$\sf{ = > 2 \times 3750 = v \times 5}$

$\sf{ = > v = \dfrac{2 \times 3750}{5}}$

$\sf{ = > v = 2 \times 750}$

$\sf{ = > v = 1500 \: m {s}^{ - 1}}$

So final answer is:

$\boxed{ \sf{ \bold{ \red{ \huge{v = 1500 \: m {s}^{ - 1}}}}}}$

Additional INFORMATION:

This method is used in SONAR to detect depth of sea bed.
This is used to detect ENEMY submarines and it's depth.
It helps to locate colony of fishes in a particular region of the sea.

Discussion

15.	CLASS SIA QUIENUETime: 9am to 12 noonPHYSICSCopy and fill in the blanks with the right words:is the region that contains no matter at all.2. Many light rays together are called a3. Electrical energy - light bulb→ _4. Distance =5. Work =
Answer» 2 BEAM of light 5.work= force×distance

15.

CLASS SIA QUIENUETime: 9am to 12 noonPHYSICSCopy and fill in the blanks with the right words:is the region that contains no matter at all.2. Many light rays together are called a3. Electrical energy - light bulb→ _4. Distance =5. Work =

Answer»

2 BEAM of light

5.work= force×distance

Discussion

16.	एक चालक पर 500 इलेक्ट्रान की कमी है,इस पर आवेश की मात्रा तथा प्रकृति ज्ञात करे
Answer» ANSWER: I can't UNDERSTAND it very much sorry but I don't KNOW the CORRECT answer sorry

16.

एक चालक पर 500 इलेक्ट्रान की कमी है,इस पर आवेश की मात्रा तथा प्रकृति ज्ञात करे

Answer»

ANSWER:

I can't UNDERSTAND it very much

sorry but I don't KNOW the CORRECT answer

sorry

Discussion

17.	Tell me the answer of m please answer me fast
Answer» ANSWER: derived PHYSICAL are SOLID angle and PLANE angle

17.

Tell me the answer of m please answer me fast

Answer»

ANSWER:

derived PHYSICAL are SOLID angle and PLANE angle

Discussion

18.	What is the state of fire
Answer» ANSWER: The STATE of FIRE is PLASMA i THINK

18.

What is the state of fire

Answer»

ANSWER:

The STATE of FIRE is PLASMA i THINK

Discussion

19.	Give Laboratory preparation of ammonia ?
Answer» Answer: Hey BUDDY here's ur answer Ammonia gas is usually prepared in the laboratory by GENTLY heating AMMONIUM chloride (NH4Cl) and slaked lime [Ca(OH)2]. Ammonia gas is lighter than air, NECESSITATING its collection by the downward displacement of air. Because it is highly soluble in water it cannot be collected over it.

19.

Give Laboratory preparation of ammonia ?

Answer»

Answer:

Hey BUDDY here's ur answer

Ammonia gas is usually prepared in the laboratory by GENTLY heating AMMONIUM chloride (NH4Cl) and slaked lime [Ca(OH)2]. Ammonia gas is lighter than air, NECESSITATING its collection by the downward displacement of air. Because it is highly soluble in water it cannot be collected over it.

Discussion

20.	A block of wood of dimensions 30cmx15cmx10cm and mass 400g is kept on ahorizontal table.a) Find the maximum and minimum pressure exerted by the object on the table ifkept with surfaces having different dimensions in S.I. unit. (take g=10m/s)b) Also find the ratio of the minimum and maximum pressure thus obtained.
Answer» ANSWER: a) 266.66 N/m2, 88.88 N/m2 b 1:3 Explanation: pressure = Force/Area. since the WEIGHT is same, pressure is maximum when BASE area is minimum. i.e. A= 0.150.10 = 0.015 m2. MAX area= 0.30.15 = 0.045 m2 Force= 0.4*10= 4N Max pressure = 4/0.015 = 266.66 N/m2 Min pressure = 4/0.045 = 88.88 N/m2 Ratio of min pressure : max pressure = 1:3

20.

A block of wood of dimensions 30cmx15cmx10cm and mass 400g is kept on ahorizontal table.a) Find the maximum and minimum pressure exerted by the object on the table ifkept with surfaces having different dimensions in S.I. unit. (take g=10m/s)b) Also find the ratio of the minimum and maximum pressure thus obtained.

Answer»

ANSWER:

a) 266.66 N/m2, 88.88 N/m2

b 1:3

Explanation:

pressure = Force/Area.

since the WEIGHT is same, pressure is maximum when BASE area is minimum. i.e. A= 0.15*0.10 = 0.015 m2.

MAX area= 0.3*0.15 = 0.045 m2

Force= 0.4*10= 4N

Max pressure = 4/0.015 = 266.66 N/m2

Min pressure = 4/0.045 = 88.88 N/m2

Ratio of min pressure : max pressure = 1:3

Discussion

21.	Force exerted on an inclined plane
Answer» Answer: 2500n is the anwer hope it HELPS U

21.

Force exerted on an inclined plane

Answer»

Answer:

2500n is the anwer

hope it HELPS U

Discussion

22.	WExample 12. While launching a rocket of mass 2 x 104 kg,a force of 5 x 10° N is applied for 20 s. Calculate the velocityattained by the rocket at the end of 20 s.
Answer» Answer: 0.480m/sec or 25/52m/sec

22.

WExample 12. While launching a rocket of mass 2 x 104 kg,a force of 5 x 10° N is applied for 20 s. Calculate the velocityattained by the rocket at the end of 20 s.

Answer»

Answer:

0.480m/sec or 25/52m/sec

Discussion

23.	How many types of flind motion are seen
Answer» ANSWER: FLUID flow is generally broken down into two DIFFERENT TYPES of flows, LAMINAR flow and turbulent flow. Laminar flow is fluid motion in which all the particles in the fluid are moving in a straight line.

23.

How many types of flind motion are seen

Answer»

ANSWER:

FLUID flow is generally broken down into two DIFFERENT TYPES of flows, LAMINAR flow and turbulent flow. Laminar flow is fluid motion in which all the particles in the fluid are moving in a straight line.

Discussion

24.	What is the C-C-H bond angle in ethane ?
Answer» ANSWER:there is no BOND in ETHANE EXPLANATION:

24.

What is the C-C-H bond angle in ethane ?

Answer»

ANSWER:there is no BOND in ETHANE

EXPLANATION:

Discussion

25.	What is definition of magnetic effect of electric current
Answer» Answer: The term 'MAGNETIC effect of elecric current' means that -an electric current FLOWING in a WIRE produces a magnetic field AROUND it. In other words, electric current can PRODUCE magnetism.

25.

What is definition of magnetic effect of electric current

Answer»

Answer:

The term 'MAGNETIC effect of elecric current' means that -an electric current FLOWING in a WIRE produces a magnetic field AROUND it.

In other words, electric current can PRODUCE magnetism.

Discussion

26.	Find the momentum of a body mass hundred gram having a kinetic energy of 20 J
Answer» $\blue{\underline{ \huge{ \blue{\boxed{ \mathfrak{\fcolorbox{red}{orange}{\purple{Answer}}}}}}}} \\ \\ \star \rm \: \purple{Given} \\ \\ \leadsto \rm \: mass \: of \: body \: (m) = 100g = 0.1kg \\ \\ \leadsto \rm \: kinetic \: energy \: (KE) = 20 \: J \\ \\ \star \rm \: \purple{to \: find} \\ \\ \leadsto \rm \: momentum \: of \: a \: body..... \\ \\ \star \rm \: \purple{Formula} \\ \\ \leadsto \rm \: relation \: between \: momentum \: and \\ \rm \: kinetic \: energy \: is \: given \: by... \\ \\ \: \: \: \: \: \: \: \: \: \dagger \: \: \underline{ \boxed{ \bold{ \pink{ \rm{p = \sqrt{2m(KE)}}}}}} \: \: \dagger \\ \\ \star \rm \: \purple{Calculation} \\ \\ \mapsto \rm \: putting \: given \: values \: in \: formula... \\ \\ \mapsto \rm \: p = \sqrt{2 \times 0.1 \times 20} = \sqrt{4} \\ \\ \longrightarrow \: \star \: \underline{\boxed{ \bold{ \orange{ \rm{p = 2 \: kg \frac{m}{s} }}}}} \: \star \: \longleftarrow$

26.

Find the momentum of a body mass hundred gram having a kinetic energy of 20 J

Answer»

$\blue{\underline{ \huge{ \blue{\boxed{ \mathfrak{\fcolorbox{red}{orange}{\purple{Answer}}}}}}}} \\ \\ \star \rm \: \purple{Given} \\ \\ \leadsto \rm \: mass \: of \: body \: (m) = 100g = 0.1kg \\ \\ \leadsto \rm \: kinetic \: energy \: (KE) = 20 \: J \\ \\ \star \rm \: \purple{to \: find} \\ \\ \leadsto \rm \: momentum \: of \: a \: body..... \\ \\ \star \rm \: \purple{Formula} \\ \\ \leadsto \rm \: relation \: between \: momentum \: and \\ \rm \: kinetic \: energy \: is \: given \: by... \\ \\ \: \: \: \: \: \: \: \: \: \dagger \: \: \underline{ \boxed{ \bold{ \pink{ \rm{p = \sqrt{2m(KE)}}}}}} \: \: \dagger \\ \\ \star \rm \: \purple{Calculation} \\ \\ \mapsto \rm \: putting \: given \: values \: in \: formula... \\ \\ \mapsto \rm \: p = \sqrt{2 \times 0.1 \times 20} = \sqrt{4} \\ \\ \longrightarrow \: \star \: \underline{\boxed{ \bold{ \orange{ \rm{p = 2 \: kg \frac{m}{s} }}}}} \: \star \: \longleftarrow$

Discussion

27.	What is poli soil and what are it uses
Answer» ANSWER: Noun...The dark organic material in SOILS, producing by the decomposition of vegetables or animal MATTER essentially to the fertility of the earth....also it is useful for plants TREES etc... *hope* *it's helpful for you*....

27.

What is poli soil and what are it uses

Answer»

ANSWER:

Noun...The dark organic material in SOILS, producing by the decomposition of vegetables or animal MATTER essentially to the fertility of the earth....also it is useful for plants TREES etc...

hope it's helpful for you....

Discussion

28.	Write the difference between scalar and vector?
Answer» $\huge{\underline{\underline{\color{black}{\bf{Answer}}}}}$ Difference between scaler and vector :- scalar has only magnitude whereas vector has both magnitude and direction . SCALARS can change if their magnitude changes whereas the VECTORS can change if other magnitude direction or both change. scalar can be added according to ordinary LAWS of algebra whereas vectors can be added Only by using special law of vector addition .

28.

Write the difference between scalar and vector?

Answer»

$\huge{\underline{\underline{\color{black}{\bf{Answer}}}}}$

Difference between scaler and vector :-

scalar has only magnitude whereas vector has both magnitude and direction .
SCALARS can change if their magnitude changes whereas the VECTORS can change if other magnitude direction or both change.
scalar can be added according to ordinary LAWS of algebra whereas vectors can be added Only by using special law of vector addition .

Discussion

29.	The equivalent resistance across ABD, 2Ω4Ω4Ω8Ω(a) 6.2 Ω(c) 8.2 ΩD,(b) 5.6 Ω(d) Both (b) and (c)
Answer» ANSWER: d OPTION is CORRECT

29.

The equivalent resistance across ABD, 2Ω4Ω4Ω8Ω(a) 6.2 Ω(c) 8.2 ΩD,(b) 5.6 Ω(d) Both (b) and (c)

Answer»

ANSWER:

d OPTION is CORRECT

Discussion

30.	Q.20 Calculate the force as attraction between two metal spheres each as mass 90kg, if the distancebetween their centre is 40cm. (G= 6.67* 10 Nm²/kg)113.1
Answer» EXPLANATION: F=Gm1m2/r^2 F=6.67×10 ×90×90/0.4^2 F=66.7×8100/0.16 but U KNOW G=6.67×10^-11 please check that and REPOST questions

30.

Q.20 Calculate the force as attraction between two metal spheres each as mass 90kg, if the distancebetween their centre is 40cm. (G= 6.67* 10 Nm²/kg)113.1

Answer»

EXPLANATION:

F=Gm1m2/r^2

F=6.67×10 ×90×90/0.4^2

F=66.7×8100/0.16

but U KNOW G=6.67×10^-11

please check that and REPOST questions

Discussion

31.	What is meant by the term measurement of a physical quantity?
Answer» Answer: $\huge {\mathcal{\purple{h}\green{e}\pink{y}\blue{!}}}$ Physical quantity is the property of an object that can be quantified. For instance, the physical QUANTITIES are the length of a rod or the MASS of a body. Measurement is the act of comparing a physical quantity with its UNIT. ... This value can be EXPRESSED as the product of numerical value and CORRESPONDING unit.

31.

What is meant by the term measurement of a physical quantity?

Answer»

Answer:

$\huge {\mathcal{\purple{h}\green{e}\pink{y}\blue{!}}}$

Physical quantity is the property of an object that can be quantified. For instance, the physical QUANTITIES are the length of a rod or the MASS of a body. Measurement is the act of comparing a physical quantity with its UNIT. ... This value can be EXPRESSED as the product of numerical value and CORRESPONDING unit.

Discussion

32.	the eletrical conductivity of a semiconductor increases when electro magnetic radiation of wavelengthshorter than 2480 nmis incident on it. find the band gap of the semiconductor?
Answer» ANSWER: I don't THINK so L don't know Explanation:

32.

the eletrical conductivity of a semiconductor increases when electro magnetic radiation of wavelengthshorter than 2480 nmis incident on it. find the band gap of the semiconductor?

Answer»

ANSWER:

I don't THINK so L don't know

Explanation:

Discussion

33.	Give one property which is common to all magnetic radiations
Answer» Answer: the COMMON property for MAGNETIC radiations is that it will ATTRACT evey iron SUBSTANCE

33.

Give one property which is common to all magnetic radiations

Answer»

Answer:

the COMMON property for MAGNETIC radiations is that it will ATTRACT evey iron SUBSTANCE

Discussion

34.	According to the information presented in this lesson, how many people under the age of 21 die each year in automobile accidents caused by underage drinking. 5,000 1,600 1,900 600
Answer» I don't KNOW which is the LESSON

34.

According to the information presented in this lesson, how many people under the age of 21 die each year in automobile accidents caused by underage drinking. 5,000 1,600 1,900 600

Answer»

I don't KNOW which is the LESSON

Discussion

35.	What do you mean by the weight of a body on the moon
Answer» Answer: WEIGHT of the BODY on the MOON is 1/6 of earth. Explanation: This VARIES from earth and moon because the *GRAVITY* changes on moon.

35.

What do you mean by the weight of a body on the moon

Answer»

Answer:

WEIGHT of the BODY on the MOON is 1/6 of earth.

Explanation:

This VARIES from earth and moon because the GRAVITY changes on moon.

Discussion

36.	How to define smps in different way?
Answer» Answer: SMPS stands for Switched-MODE Power SUPPLY. ... It is also known as Switching Mode Power Supply. It is power supply UNIT (PSU) generally used in computers to CONVERT the voltage into the computer acceptable range. This device has the power handling electronic components that converts electrical power efficiently.

36.

How to define smps in different way?

Answer»

Answer:

SMPS stands for Switched-MODE Power SUPPLY. ... It is also known as Switching Mode Power Supply. It is power supply UNIT (PSU) generally used in computers to CONVERT the voltage into the computer acceptable range. This device has the power handling electronic components that converts electrical power efficiently.

Discussion

37.	What are the desirable characteristics of a physical quantity??
Answer» $\huge{\underline{\underline{\color{blue}{\bf{Answer}}}}}$ The desirable characteristics of a physical unit :- It should be WELL defined . It should be of convenient size i.e, neither too small not too large in comparison with the measure physical quantity . It should not change with time . it should be EASILY REPRODUCIBLE . it should be impressible or destructible it should not be affected by the change in physical conditions such as pressure, TEMPERATURE etc. it should be internationally acceptable . it should be easily accessible .

37.

What are the desirable characteristics of a physical quantity??

Answer»

$\huge{\underline{\underline{\color{blue}{\bf{Answer}}}}}$

The desirable characteristics of a physical unit :-

It should be WELL defined .
It should be of convenient size i.e, neither too small not too large in comparison with the measure physical quantity .
It should not change with time .
it should be EASILY REPRODUCIBLE .
it should be impressible or destructible
it should not be affected by the change in physical conditions such as pressure, TEMPERATURE etc.
it should be internationally acceptable .
it should be easily accessible .

Discussion

38.	Drip proof in meaning
Answer» Explanation: Open Drip-Proof Enclosure is a TOOL that circulates cool air and prevents water droplets from falling in a motor. It is designed to meet the needs of the industry by improving product RELIABILITY and ENERGY conversation. BROTHER PLEASE MARK IT AS BRAINLIEST PLEASE

38.

Drip proof in meaning

Answer»

Explanation:

Open Drip-Proof Enclosure is a TOOL that circulates cool air and prevents water droplets from falling in a motor. It is designed to meet the needs of the industry by improving product RELIABILITY and ENERGY conversation.

BROTHER PLEASE MARK IT AS BRAINLIEST PLEASE

Discussion

39.	Drip proof in meanings
Answer» Answer: heya ☺ Drip-Proof ENCLOSURE is a tool that CIRCULATES cool air and PREVENTS water droplets from falling in a motor.

39.

Drip proof in meanings

Answer»

Answer:

heya ☺

Drip-Proof ENCLOSURE is a tool that CIRCULATES cool air and PREVENTS water droplets from falling in a motor.

Discussion

40.	Solve the equation by reducing them to quadratic equation-2√2x+1. -2x=1
Answer» ANSWER: no SOLUTION EXIST SEE attacent Explanation: FOLLOW me

40.

Solve the equation by reducing them to quadratic equation-2√2x+1. -2x=1

Answer»

ANSWER:

no SOLUTION EXIST SEE attacent

Explanation:

FOLLOW me

Discussion

41.	Solve this and explain
Answer» Answer: Option D Explanation: Let the third spherical CONDUCTOR be A Initial force=F=kq^2/r^2 When you touch A with B, total CHARGE present on B and A gets EQUALLY divided. Total charge on both B and A =q+0=q So after touching, charge on both B and A=q/2 Now A is touched with C Total charge on both A and C=q/2+q=3q/2 Now this total charge gets equally divided between A and C. So after touching, charge on both A and C=3q/4 Now charge on B =q/2 charge on C=3q/4 Force=3Kq^2/8r^2=3F/8

41.

Solve this and explain

Answer»

Answer:

Option D

Explanation:

Let the third spherical CONDUCTOR be A

Initial force=F=kq^2/r^2

When you touch A with B, total CHARGE present on B and A gets EQUALLY divided.

Total charge on both B and A =q+0=q

So after touching, charge on both

B and A=q/2

Now A is touched with C

Total charge on both A and C=q/2+q=3q/2

Now this total charge gets equally divided between A and C.

So after touching, charge on both

A and C=3q/4

Now charge on B =q/2

charge on C=3q/4

Force=3Kq^2/8r^2=3F/8

Discussion

42.	What is deforming force,can anyone explain.........
Answer» DEFORMING force is the force which displaces a body from its original position or configuration either by CHANGING LOCATION or shape. Eg: A pencil which is broken by APPLYING force. Restoring force tends to MOVE the place of the body back to its original position or configuration. --Itzharsh★

42.

What is deforming force,can anyone explain.........

Answer»

DEFORMING force is the force which displaces a body from its original position or configuration either by CHANGING LOCATION or shape. Eg: A pencil which is broken by APPLYING force. Restoring force tends to MOVE the place of the body back to its original position or configuration.

--Itzharsh★

Discussion

43.	A 12V battery connected with a 2 ohm resistor, 3 ohm resistor, and 4 ohm resistor are connected in parallel, each on their own branch.
Answer» Answer: then current through 2 OHM is 6A current through 3 ohm is 4 A current through 4 ohm is 3 A

43.

A 12V battery connected with a 2 ohm resistor, 3 ohm resistor, and 4 ohm resistor are connected in parallel, each on their own branch.

Answer»

Answer:

then

current through 2 OHM is 6A

current through 3 ohm is 4 A

current through 4 ohm is 3 A

Discussion

44.	A bullet going with speed 150 metre per second enters in a concrete wall and penetrates a distance of 15 CM before coming to rest the tradition that offered by the wall is
Answer» $\displaystyle\longrightarrow\sf{a=\dfrac {v^2-u^2}{2s}}$ $\displaystyle\longrightarrow\sf{a=\dfrac {0^2-(150)^2}{2\times 15\times 10^{-2}}}$ $\displaystyle\longrightarrow\sf{a=\dfrac {0-22500}{30\times 10^{-2}}}$ $\displaystyle\longrightarrow\sf{a=\dfrac {-22500\times 100}{30}}$ $\displaystyle\longrightarrow\sf{\underline {\underline {a=-75000\ m\ s^{-2}}}}$ $\displaystyle\longrightarrow\sf{\underline {\underline {a=-75\ km\ s^{-2}}}}$

44.

A bullet going with speed 150 metre per second enters in a concrete wall and penetrates a distance of 15 CM before coming to rest the tradition that offered by the wall is

Answer»

$\displaystyle\longrightarrow\sf{a=\dfrac {v^2-u^2}{2s}}$

$\displaystyle\longrightarrow\sf{a=\dfrac {0^2-(150)^2}{2\times 15\times 10^{-2}}}$

$\displaystyle\longrightarrow\sf{a=\dfrac {0-22500}{30\times 10^{-2}}}$

$\displaystyle\longrightarrow\sf{a=\dfrac {-22500\times 100}{30}}$

$\displaystyle\longrightarrow\sf{\underline {\underline {a=-75000\ m\ s^{-2}}}}$

$\displaystyle\longrightarrow\sf{\underline {\underline {a=-75\ km\ s^{-2}}}}$

Discussion

45.	What is ohm's law explain
Answer» ANSWER: when temperature is constant in a CIRCUIT, the VOLTAGE divided by the current is always a constant. this constanst is called resistance R. this is ohm's law. V = IR this is ohm's law equation. HOPE it helps......

45.

What is ohm's law explain

Answer»

ANSWER:

when temperature is constant in a CIRCUIT, the VOLTAGE divided by the current is always a constant. this constanst is called resistance R. this is ohm's law.

V = IR this is ohm's law equation.

HOPE it helps......

Discussion

46.	Reflection of light
Answer» Answer: Reflection is the change in direction of a wavefront at an interface between two different MEDIA so that the wavefront returns into the medium from which it ORIGINATED. Common examples include the reflection of light, SOUND and WATER waves. Explanation: PLEASE mark as brainlest answer

46.

Reflection of light

Answer»

Answer:

Reflection is the change in direction of a wavefront at an interface between two different MEDIA so that the wavefront returns into the medium from which it ORIGINATED. Common examples include the reflection of light, SOUND and WATER waves.

Explanation:

PLEASE mark as brainlest answer

Discussion

47.	Presence of Aerenchyma tissue is steam and leaves in a characteristic of ........??. plant
Answer» Answer: Presence of Aerenchyma TISSUE in stem and LEAVES is a characteristics of $\boxed{ \red{ \sf{ \huge{ \bold{Aquatic \: plant}}}}}$ Additional information: Aerenchyma tissue is a subgroup under Parenchyma group of tissues. They are differentiated , specialized tissues. They have air pockets or spaces CONTAINING air. Presence of air makes the net density of PLANTS lesser than that of water. This characteristics helps them float in water. The air in these pockets can either be generated via metabolism (in-vivo) it taken up from the atmosphere.

47.

Presence of Aerenchyma tissue is steam and leaves in a characteristic of ........??. plant

Answer»

Answer:

Presence of Aerenchyma TISSUE in stem and LEAVES is a characteristics of

$\boxed{ \red{ \sf{ \huge{ \bold{Aquatic \: plant}}}}}$

Additional information:

Aerenchyma tissue is a subgroup under Parenchyma group of tissues.
They are differentiated , specialized tissues.
They have air pockets or spaces CONTAINING air.
Presence of air makes the net density of PLANTS lesser than that of water.
This characteristics helps them float in water.
The air in these pockets can either be generated via metabolism (in-vivo) it taken up from the atmosphere.

Discussion

48.	How many positive and negative electron in water??
Answer» ANSWER: EQUAL positive and NEGATIVE ELECTRONS will be in it. if not then it is not stable.

48.

How many positive and negative electron in water??

Answer»

ANSWER:

EQUAL positive and NEGATIVE ELECTRONS will be in it. if not then it is not stable.

Discussion

49.	Which of the following gland is related with immunity?a) Pineal glandb) adrenal glandc) Thymusd) parathyroid gland
Answer» ANSWER: (c). *THYMUS* *gland. hope it helps you........ please MARK me as a brain LIST..... I will* *follow* *you*.......

49.

Which of the following gland is related with immunity?a) Pineal glandb) adrenal glandc) Thymusd) parathyroid gland

Answer»

ANSWER:

(c). THYMUS gland.

hope it helps you........

please MARK me as a brain LIST.....

I will follow you.......

Discussion

50.	A glass sphere of radius 10cm hasrefractive index of32. A fly sitting on itis viewed directly oppositive throughglass. What will be the position of thefly?
Answer» the FLY will be in the DIRECTION of INCIDENT RAY.

Discussion

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I will follow you.......

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