67486 + Interview Questions in Secondary School in Physics

1.	A pendulum oscillates 120 times in 5 seconds. Find its time period and frequency.their units.
Answer» Answer: Time period is defined as the time required to complete one oscillation. FREQUENCY is defined as the NUMBER of oscillations per UNIT time. Time = 4 sec. Time Period = (Time taken) / (Number of Oscillations) Time Period = (4/40) = 0.1 sec. Frequency = (Number of Oscillations)/ (Time taken)Frequency = (40/4) =10HZ

1.

A pendulum oscillates 120 times in 5 seconds. Find its time period and frequency.their units.

Answer»

Answer:

Time period is defined as the time required to complete one oscillation.

FREQUENCY is defined as the NUMBER of oscillations per UNIT time.

Time = 4 sec.

Time Period = (Time taken) / (Number of Oscillations)

Time Period = (4/40) = 0.1 sec.

Frequency = (Number of Oscillations)/ (Time taken)Frequency = (40/4) =10HZ

Discussion

2.	You are given two samples. How do you identify, which one is a metal and which is a non-metal?
Answer» ANSWER: it is HARD it is SOFT so IDENTIFY

2.

You are given two samples. How do you identify, which one is a metal and which is a non-metal?

Answer»

ANSWER:

it is HARD it is SOFT so IDENTIFY

Discussion

3.	Question: In a system of three particles, the linear momenta of the three particles are (1,2,3), (4,5,6) and(5,6,7). These components are in kgms–1. If the velocity of centre of mass of the system is(30,39,48) ms–1, then find the total mass of the system.
Answer» Answer: Write a passage on the BASIS of the following points how General Election is DONE :- 10 Election Commissioner announces time of election electoral rolls containing voter's name prepared-presiding and polling officers recruited, trained - SENT to polling booths -school/ college building requisited as polling booths --- voters line up to vote on Electronic voting Machine (EVM) showing voter's cards or another documents - results announced amid great excite- Please said this Processing . Explanation: traditional and modern methods irrigation include the advantages and disadvantagRead the poem and answer the following questions. Words are the food and dress of thought They give it its body and swing And everyone’s longing today to hear Some FRESH and beautiful thing: But only words can free a thought From its prison behind your eyes May be your mind is HOLDING now A marvelous new surprise!

3.

Question: In a system of three particles, the linear momenta of the three particles are (1,2,3), (4,5,6) and(5,6,7). These components are in kgms–1. If the velocity of centre of mass of the system is(30,39,48) ms–1, then find the total mass of the system.

Answer»

Answer:

Write a passage on the BASIS of the following points how General Election is DONE :- 10

Election Commissioner announces time of election

electoral rolls containing voter's name

prepared-presiding and polling officers recruited, trained - SENT to polling booths -school/

college building requisited as polling booths --- voters line up to vote on Electronic voting Machine

(EVM) showing voter's cards or another documents - results announced amid great excite-

Please said this Processing .

Explanation:

traditional

and modern methods irrigation include the advantages and

disadvantagRead the poem and answer the following questions.

Words are the food and dress of thought

They give it its body and swing

And everyone’s longing today to hear

Some FRESH and beautiful thing:

But only words can free a thought

From its prison behind your eyes

May be your mind is HOLDING now

A marvelous new surprise!

Discussion

4.	The idea of displacement current is due to ___________.
Answer» $\huge\blue{\fbox{Answer}}$ DISPLACEMENT CURRENT is DUE to the time-varying ELECTRIC FIELD.

4.

The idea of displacement current is due to ___________.

Answer»

$\huge\blue{\fbox{Answer}}$

DISPLACEMENT CURRENT is DUE to the time-varying ELECTRIC FIELD.

Discussion

5.	A 12V battery of a car is connected across a 4 resistor. the calculate the current passing through the resistor
Answer» PLEASE MARK me as BRAINIEST

Discussion

6.	Differentiate function with respect to x → d/dx (2x+3)⁶
Answer» Answer: $\Large{\bf{\purple{\mathfrak{\dag{ \underline{\underline {Question:-}}}}}}}$ ☞Differentiate FUNCTION with RESPECT to x → ❥ $\dfrac{d( {2x + 3)}^{6} }{dx}$ $\Large{\bf{\green{\mathfrak{\dag{ \underline{\underline {Answer:-}}}}}}}$ Given:- y=(2x+3)⁶ To FIND:- $\dfrac{dy}{dx}$ Solution:- Let (2x+3) be equals to t t=2x+3 =>(2x+3)⁶=t⁶ So We need to differentiate t⁶ with respect to x where t=2x+3 $= > \dfrac{d( {t}^{6}) }{dx} \\ \\ = \frac{d( {t}^{6}) }{dt} \times \frac{dt}{dx}$ (MULTIPLYING and dividing dt in equation) $= (6)( {t}^{6 - 1} ) \times \dfrac{dt}{dx}$ (SINCE, $\frac{d {x}^{n} }{dx} = n {x}^{n - 1}$ ) $= 6 {t}^{5} \times \dfrac{dt}{dx} \\ = 6( {2x + 3})^{5} \times \frac{d(2x + 3)}{dx}$ (Putting value of t=2x+3) $= 6( {2x + 3})^{5} \times (2 \times 1)( {x}^{1 - 1} ) \\ = 6 \times 2 \times ( {2x + 3)}^{5} \\ = 12 \times ({2x + 3})^{5}$ Therefore,Differentiating the function $\dfrac{d( {2x + 3)}^{6} }{dx}$ with respect to x We get Solution as, 12(2x+3)⁵ ${\bf{\pink{\dag{ \underline{\underline {ADDITIONAL\;INFORMATION:-}}}}}}$ ❥Basic Differentiation Formulae:- y=constant, $= > \frac{dy}{dx} = 0$ y=xⁿ, $=>\frac{dy }{dx} = n {x}^{n - 1}$ y=sinx, $=>\frac{dy }{dx} =cosx$ y=cosx, $=>\frac{dy }{dx} =(-sinx)$ y=tanx, $=>\frac{dy }{dx} =({ sec}^{2}x)$ y=cotx, $= > \frac{dy}{dx} = { - cosec}^{2} x$ $y = {a}^{x} = > \frac{dy}{dx} = {a}^{x} ln(a)$ $y = {e}^{x} = > \frac{dy}{dx} = {e}^{x}$ $y = ln(x ) = > \frac{dy}{dx} = \frac{1}{x}$

6.

Differentiate function with respect to x → d/dx (2x+3)⁶

Answer»

Answer:

$\Large{\bf{\purple{\mathfrak{\dag{ \underline{\underline {Question:-}}}}}}}$

☞Differentiate FUNCTION with RESPECT to x →

❥ $\dfrac{d( {2x + 3)}^{6} }{dx}$

$\Large{\bf{\green{\mathfrak{\dag{ \underline{\underline {Answer:-}}}}}}}$

Given:-

y=(2x+3)⁶

To FIND:-

$\dfrac{dy}{dx}$

Solution:-

Let (2x+3) be equals to t

t=2x+3

=>(2x+3)⁶=t⁶

So We need to differentiate t⁶ with respect to x where t=2x+3

$= > \dfrac{d( {t}^{6}) }{dx} \\ \\ = \frac{d( {t}^{6}) }{dt} \times \frac{dt}{dx}$

(MULTIPLYING and dividing dt in equation)

$= (6)( {t}^{6 - 1} ) \times \dfrac{dt}{dx}$

(SINCE, $\frac{d {x}^{n} }{dx} = n {x}^{n - 1}$ )

$= 6 {t}^{5} \times \dfrac{dt}{dx} \\ = 6( {2x + 3})^{5} \times \frac{d(2x + 3)}{dx}$

(Putting value of t=2x+3)

$= 6( {2x + 3})^{5} \times (2 \times 1)( {x}^{1 - 1} ) \\ = 6 \times 2 \times ( {2x + 3)}^{5} \\ = 12 \times ({2x + 3})^{5}$

Therefore,Differentiating the function $\dfrac{d( {2x + 3)}^{6} }{dx}$ with respect to x

We get Solution as, 12(2x+3)⁵

${\bf{\pink{\dag{ \underline{\underline {ADDITIONAL\;INFORMATION:-}}}}}}$

❥Basic Differentiation Formulae:-

y=constant, $= > \frac{dy}{dx} = 0$

y=xⁿ, $=>\frac{dy }{dx} = n {x}^{n - 1}$

y=sinx, $=>\frac{dy }{dx} =cosx$

y=cosx, $=>\frac{dy }{dx} =(-sinx)$

y=tanx, $=>\frac{dy }{dx} =({ sec}^{2}x)$

y=cotx, $= > \frac{dy}{dx} = { - cosec}^{2} x$

$y = {a}^{x} = > \frac{dy}{dx} = {a}^{x} ln(a)$

$y = {e}^{x} = > \frac{dy}{dx} = {e}^{x}$

$y = ln(x ) = > \frac{dy}{dx} = \frac{1}{x}$

Discussion

7.	Define Static Electricity
Answer» Answer: *a stationary electric CHARGE, typically PRODUCED by friction, which CAUSES sparks or crackling or the ATTRACTION of dust or HAIR.*

7.

Define Static Electricity

Answer»

Answer:

a stationary electric CHARGE, typically PRODUCED by friction, which CAUSES sparks or crackling or the ATTRACTION of dust or HAIR.

Discussion

8.	Mcq. who deep is lake titicaca?a 375mb275mc475m
Answer» ANSWER: OPTION. B) 275 m is CORRECT

8.

Mcq. who deep is lake titicaca?a 375mb275mc475m

Answer»

ANSWER:

OPTION. B) 275 m is CORRECT

Discussion

9.	how many blocks of icecream each 10cm10cm4cm can be stored in the compartment of a freezer measuring 40cm40cm20cm
Answer» Concept:- Here, We have the dimensions of ice-cream and the dimensions of freezer. We have to find the number of ice-cream that can be stored in the freezer. To find this we first find the VOLUME of both ice-cream and freezer. Then divide the volume of freezer by volume of ice-cream, then we GET the number of ice-cream that can be stored. Given:- Dimension of ice-cream is 10 cm × 10 cm × 4 cm. Dimension of freezer is 40 cm × 40 cm × 20 cm. To Find:- Number of ice-cream that can be stored in the freezer ? Solution:- Here, We it is given the three dimensions of the ice-cream and freezer, So, it is a cuboid and we will use the FORMULA to find volume of cuboid. $\sf{\Longrightarrow Volume\ of\ Cuboid\ =\ Length \times Breadth \times Height}$ Where, Length of ice-cream = 10 cm Breadth of ice-cream = 10 cm Height of ice-cream = 4 cm Putting all the VALUES we get, $\sf{\Longrightarrow 10 \times 10 \times 4}$ $\sf{\Longrightarrow 400\ cm^{3}}$ So, volume of ice-cream of is 400 cm³. $\sf{\Longrightarrow Now, Volume\ of\ Cuboid\ =\ Length \times Breadth \times Height}$ Where, Length of freezer = 40 cm Breadth of freezer = 40 cm Height of freezer = 20 cm Putting all the values we get, $\sf{\Longrightarrow 40 \times 40 \times 20}$ $\sf{\Longrightarrow 32,000\ cm^{3}}$ So, Volume of freezer is 32,000 cm³. Now, number of ice-cream that can be stored in the freezer is $\sf{\Longrightarrow \dfrac{Volume\ of\ freezer}{Volume\ of\ ice-cream}}$ $\sf{\Longrightarrow \dfrac{32,000\ cm^{3}}{400\ cm^{3}}}$ $\sf{\Longrightarrow 80}$ Hence, The number of ice-cream that can be stored in the freezer is 80.

9.

how many blocks of icecream each 10cm10cm4cm can be stored in the compartment of a freezer measuring 40cm40cm20cm

Answer»

Concept:-

Here, We have the dimensions of ice-cream and the dimensions of freezer. We have to find the number of ice-cream that can be stored in the freezer. To find this we first find the VOLUME of both ice-cream and freezer. Then divide the volume of freezer by volume of ice-cream, then we GET the number of ice-cream that can be stored.

Given:-

Dimension of ice-cream is 10 cm × 10 cm × 4 cm.
Dimension of freezer is 40 cm × 40 cm × 20 cm.

To Find:-

Number of ice-cream that can be stored in the freezer ?

Solution:-

Here, We it is given the three dimensions of the ice-cream and freezer,

So, it is a cuboid and we will use the FORMULA to find volume of cuboid.

$\sf{\Longrightarrow Volume\ of\ Cuboid\ =\ Length \times Breadth \times Height}$

Where, Length of ice-cream = 10 cm

Breadth of ice-cream = 10 cm

Height of ice-cream = 4 cm

Putting all the VALUES we get,

$\sf{\Longrightarrow 10 \times 10 \times 4}$

$\sf{\Longrightarrow 400\ cm^{3}}$

So, volume of ice-cream of is 400 cm³.

$\sf{\Longrightarrow Now, Volume\ of\ Cuboid\ =\ Length \times Breadth \times Height}$

Where, Length of freezer = 40 cm

Breadth of freezer = 40 cm

Height of freezer = 20 cm

Putting all the values we get,

$\sf{\Longrightarrow 40 \times 40 \times 20}$

$\sf{\Longrightarrow 32,000\ cm^{3}}$

So, Volume of freezer is 32,000 cm³.

Now, number of ice-cream that can be stored in the freezer is

$\sf{\Longrightarrow \dfrac{Volume\ of\ freezer}{Volume\ of\ ice-cream}}$

$\sf{\Longrightarrow \dfrac{32,000\ cm^{3}}{400\ cm^{3}}}$

$\sf{\Longrightarrow 80}$

Hence, The number of ice-cream that can be stored in the freezer is 80.

Discussion

10.	For vector B = 8i - 6j, What is the magnitude of vector B
Answer» Answer: where did rainy LIVE and with WARM we had never GONE out of the VILLAGE

10.

For vector B = 8i - 6j, What is the magnitude of vector B

Answer»

Answer:

where did rainy LIVE and with WARM we had never GONE out of the VILLAGE

Discussion

11.	Is practically charge 4.5x10-19 c possible?
Answer» Answer: ab TAK f and g X V and class of persons a X factor a few minutes from the following DOCUMENT d Explanation: adi for sale in the future of our first meeting of a few minutes from the f

11.

Is practically charge 4.5x10-19 c possible?

Answer»

Answer:

ab TAK f and g X V and class of persons a X factor a few minutes from the following DOCUMENT d

Explanation:

adi for sale in the future of our first meeting of a few minutes from the f

Discussion

12.	The frequency of sound produced when a table is struck is 250 Hz.(a)What is the natural frequency of the table?
Answer» Answer: you have a LOT to say about this ONE and I will be ABLE and I Explanation: 6AM was the last of his CAREER in telugu as a

12.

The frequency of sound produced when a table is struck is 250 Hz.(a)What is the natural frequency of the table?

Answer»

Answer:

you have a LOT to say about this ONE and I will be ABLE and I

Explanation:

6AM was the last of his CAREER in telugu as a

Discussion

13.	Complete the passage.Sound waves and some earthquake waves are waves. Ocean, light, and other earthquake waves are waves.
Answer» ANSWER: SOUND waves and some earthquake waves are longitudinal waves. OCEAN, LIGHT and other earthquake waves are transverse waves.

13.

Complete the passage.Sound waves and some earthquake waves are waves. Ocean, light, and other earthquake waves are waves.

Answer»

ANSWER:

SOUND waves and some earthquake waves are longitudinal waves. OCEAN, LIGHT and other earthquake waves are transverse waves.

Discussion

14.	Cutting of log of wood into pieces is a physical change or chemical changeyour answer.Give an example for the following
Answer» Answer: Answer: In burning of WOOD, new substances are formed and hence it is a chemical change. While CUTTING the wood into small PIECES no new SUBSTANCE is formed, THUS it is a physical change.

14.

Cutting of log of wood into pieces is a physical change or chemical changeyour answer.Give an example for the following

Answer»

Answer:

Answer: In burning of WOOD, new substances are formed and hence it is a chemical change. While CUTTING the wood into small PIECES no new SUBSTANCE is formed, THUS it is a physical change.

Discussion

15.	Ɪɴ sᴇᴀʀᴄʜ ᴏғ ᴍʏ ᴍɪᴄʜɪQ1.100 joules of energy from burning coal on an open fire and in a stove.(Scale 1 small box =5 J)a. Add the missing figures to the diagram.b. Which is more efficient, the open fire or the stove? Give a reason for your answer.
Answer» ANSWER: a. I don't know b. OPEN fire because it is not EASY

15.

Ɪɴ sᴇᴀʀᴄʜ ᴏғ ᴍʏ ᴍɪᴄʜɪQ1.100 joules of energy from burning coal on an open fire and in a stove.(Scale 1 small box =5 J)a. Add the missing figures to the diagram.b. Which is more efficient, the open fire or the stove? Give a reason for your answer.

Answer»

ANSWER:

a. I don't know

b. OPEN fire

because it is not EASY

Discussion

16.	Which is the correct relationA Xc=0B Xo = wicC XE =1CD none of these
Answer» ANSWER: B is the CORRECT answer HOPE it HELPS you

16.

Which is the correct relationA Xc=0B Xo = wicC XE =1CD none of these

Answer»

ANSWER:

B is the CORRECT answer HOPE it HELPS you

Discussion

17.	define momentum caluculate the momentum of a ball moving width a velocity of 6.2 m/s and mass of ball is 2kg
Answer» QUESTION : Define momentum Find momentum of given ball <P> Given : VELOCITY of ball = 6.2m/s Mass of ball = 2kg Solution : Part 1) Momentum of a body is product of its mass and velocity with which body is travelling. Momentum is vector quantity. Momentum is denoted by p. It's UNIT is kg×m/s. p = mass × velocity Part 2) Mass of ball = 2kg Velocity of ball = 6.2 m/s ➝ p = mass × velocity ➩ p = 2kg × 6.2 m/s ➩ p = 12.4 kg-m/s ________________________________

17.

define momentum caluculate the momentum of a ball moving width a velocity of 6.2 m/s and mass of ball is 2kg

Answer»

QUESTION :

Define momentum
Find momentum of given ball

<P>

Given :

VELOCITY of ball = 6.2m/s
Mass of ball = 2kg

Solution :

Part 1)

Momentum of a body is product of its mass and velocity with which body is travelling.

Momentum is vector quantity.

Momentum is denoted by p.

It's UNIT is kg×m/s.

p = mass × velocity

Part 2)

Mass of ball = 2kg
Velocity of ball = 6.2 m/s

➝ p = mass × velocity

➩ p = 2kg × 6.2 m/s

➩ p = 12.4 kg-m/s

________________________________

Discussion

18.	0. The diagrams show what happens to each 100 joules of energy from burning coal on an open fire and in a stove.(Scale 1 small box =5 J)a. Add the missing figures to the diagram.b. Which is more efficient, the open fire or the stove? Give a reason for your answer.______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Answer» YE Q H YA Timepas?⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

Discussion

19.	A curved mirror forms an image of maginification-2 where is the object place
Answer» AnSwEr :- Object is PLACED beyond C Thank you ♥️

19.

A curved mirror forms an image of maginification-2 where is the object place

Answer»

AnSwEr :-

Object is PLACED beyond C

Thank you ♥️

Discussion

20.	The speed of sound at room temp is ………
Answer» Answer: 246 metres per second HOPE it HELPS to READER

20.

The speed of sound at room temp is ………

Answer»

Answer:

246 metres per second

HOPE it HELPS to READER

Discussion

21.	The area of contact of the brick with powdered lime when it is placed vertically is 0.02 m? calculate the pressure exerted by the brick of weight 30 N on the lime powder.
Answer» The pressure exerted by the weight of the brick on the LIME powder is 1500 Pa Explanation: GIVEN: The area of CONTACT of brick = 0.02 m² Force due to weight of the brick = 30 N To find out: The pressure exerted by the brick on the lime powder Solution: We know that Pressure = Force/Area of contact or, $P=\frac{F}{A}$ Here, F = 30 N A = 0.02 m² Thus, $P=\frac{30}{0.02}$ N/m² $\implies P=1500$ Pa Hope this answer is helpful. Know More: Q: A brick has a weight of 15 N. If the pressure it produces is 0.5 N/cm(2) what is the area in contact with the ground? Click Here: brainly.in/question/22227432

21.

The area of contact of the brick with powdered lime when it is placed vertically is 0.02 m? calculate the pressure exerted by the brick of weight 30 N on the lime powder.

Answer»

The pressure exerted by the weight of the brick on the LIME powder is 1500 Pa

Explanation:

GIVEN:

The area of CONTACT of brick = 0.02 m²

Force due to weight of the brick = 30 N

To find out:

The pressure exerted by the brick on the lime powder

Solution:

We know that

Pressure = Force/Area of contact

or, $P=\frac{F}{A}$

Here,

F = 30 N

A = 0.02 m²

Thus,

$P=\frac{30}{0.02}$ N/m²

$\implies P=1500$ Pa

Hope this answer is helpful.

Know More:

Q: A brick has a weight of 15 N. If the pressure it produces is 0.5 N/cm(2) what is the area in contact with the ground?

Click Here: brainly.in/question/22227432

Discussion

22.	If HCF (16, y) = 8 and LCM (16,y) = 48, then the value of y is *
Answer» Answer: The two numbers are= 16 and y As we know that, HCF×LCM= PRODUCT OF NUMBERS HCF= 8 and LCM= 48 HCF×LCM 8×48= 16×y y= 24. *PLEASE MARK ME AS BRAINLIEST.*

22.

If HCF (16, y) = 8 and LCM (16,y) = 48, then the value of y is *

Answer»

Answer:

The two numbers are= 16 and y

As we know that,

HCF×LCM= PRODUCT OF NUMBERS

HCF= 8 and LCM= 48

HCF×LCM

8×48= 16×y

y= 24.

PLEASE MARK ME AS BRAINLIEST.

Discussion

23.	Define an ecosystem. Explain it witha suitable example. (AS 1)
Answer» Explanation: An ecosystem includes the interaction of the LIVING things with the non-living environment. It includes ANIMALS which are interdependent on each other for SURVIVAL and can be represented by a food chain. Example- PONDS or lakes are natural stationary freshwater ECOSYSTEMS. Producers include phytoplanktons. Please mark me brainliest

23.

Define an ecosystem. Explain it witha suitable example. (AS 1)

Answer»

Explanation:

An ecosystem includes the interaction of the LIVING things with the non-living environment. It includes ANIMALS which are interdependent on each other for SURVIVAL and can be represented by a food chain. Example- PONDS or lakes are natural stationary freshwater ECOSYSTEMS. Producers include phytoplanktons.

Please mark me brainliest

Discussion

24.	The radius of a sphere measured separately yields values 4.1m, 4.2m and 4.3m, then the arithmetic mean radius will be?
Answer» Answer: hey here is your answer for your question PLS MARK it as brainliest Explanation: so the three different measures values of RADIUS of particular sphere are 4.1 cm,,4.2 cm,,4.3 cm so here as there are 3 values ARITHMETIC mean would be,, sum of total values/ total values ie 4.1 cm+4.2 cm+4.3 cm/3 ie 12.6 cm/3 =4.2 cm hence arithmetic mean radius of sphere would be 4.2 cm

24.

The radius of a sphere measured separately yields values 4.1m, 4.2m and 4.3m, then the arithmetic mean radius will be?

Answer»

Answer:

hey here is your answer for your question

PLS MARK it as brainliest

Explanation:

so the three different measures values of RADIUS of particular sphere are 4.1 cm,,4.2 cm,,4.3 cm

so here as there are 3 values

ARITHMETIC mean would be,,

sum of total values/ total values

ie 4.1 cm+4.2 cm+4.3 cm/3

ie 12.6 cm/3

=4.2 cm

hence arithmetic mean radius of sphere would be 4.2 cm

Discussion

25.	Mention the important considerations required while fabricating a p-n junction diode to be used as a Light Emitting Diode (LED). What should be the order of band gap of an LED if it is required to emit light in the visible range?
Answer» Answer: (1) The reverse BREAKDOWN voltages of LEDs are very low, typically arround 5V. So, care should be taken while fabricating a pn- junction diode so that the high reverse voltages do not appear across them. (2) There is very little resistance to LIMIT the CURRENT in LED.

25.

Mention the important considerations required while fabricating a p-n junction diode to be used as a Light Emitting Diode (LED). What should be the order of band gap of an LED if it is required to emit light in the visible range?

Answer»

Answer:

(1) The reverse BREAKDOWN voltages of LEDs are very low, typically arround 5V. So, care should be taken while fabricating a pn- junction diode so that the high reverse voltages do not appear across them. (2) There is very little resistance to LIMIT the CURRENT in LED.

Discussion

26.	Itegration of root t with respect to t
Answer» ANSWER: jsivsgsdcvaisbvwgosvsvshs Explanation: hshsgdhakosvww

26.

Itegration of root t with respect to t

Answer»

ANSWER:

jsivsgsdcvaisbvwgosvsvshs

Explanation:

hshsgdhakosvww

Discussion

27.	Fill in the blanks. golden quadrillateral will connect the ______cites of india.
Answer» ANSWER: DELHI , KOLKATA , MUMBAI and CHENNAI

27.

Fill in the blanks. golden quadrillateral will connect the ______cites of india.

Answer»

ANSWER:

DELHI , KOLKATA , MUMBAI and CHENNAI

Discussion

28.	Complete the following reaction
Answer» ANSWER: CaCO3+H2O+Cao+Co2 PLEASE MARK in BRAIN LIST

28.

Complete the following reaction

Answer»

ANSWER:

CaCO3+H2O+Cao+Co2

PLEASE MARK in BRAIN LIST

Discussion

29.	Question: In a system of three particles, the linear momenta of the three particles are (1,2,3), (4,5,6) and(5,6,7). These components are in kgms–1. If the velocity of centre of mass of the system is(30,39,48) ms–1, then find the total mass of the system.No spam allowed
Answer» Answer: Read the poem and answer the following questions. WORDS are the food and dress of thought They give it its body and swing And everyone’s longing today to hear Some FRESH and beautiful thing: But only words can free a thought From its prison BEHIND your eyes May be your mind is holding now A marvelous new SURPRISE! Explanation: Read the poem and answer the following questions. Words are the food and dress of thought They give it its body and swing And everyone’s longing today to hear Some fresh and beautiful thing: But only words can free a thought From its prison behind your eyes May be your mind is holding now A marvelous new surprise!.

29.

Question: In a system of three particles, the linear momenta of the three particles are (1,2,3), (4,5,6) and(5,6,7). These components are in kgms–1. If the velocity of centre of mass of the system is(30,39,48) ms–1, then find the total mass of the system.No spam allowed

Answer»

Answer:

Read the poem and answer the following questions.

WORDS are the food and dress of thought

They give it its body and swing

And everyone’s longing today to hear

Some FRESH and beautiful thing:

But only words can free a thought

From its prison BEHIND your eyes

May be your mind is holding now

A marvelous new SURPRISE!

Explanation:

Read the poem and answer the following questions.

Words are the food and dress of thought

They give it its body and swing

And everyone’s longing today to hear

Some fresh and beautiful thing:

But only words can free a thought

From its prison behind your eyes

May be your mind is holding now

A marvelous new surprise!.

Discussion

30.	Write the Molecules formula of the compoundof the following elementswith Hydrogen 1) S, 2) C, 3) F, 4) N, 5) CI, 6) P
Answer» have NICE DAY BRO I PURPLE you

30.

Write the Molecules formula of the compoundof the following elementswith Hydrogen 1) S, 2) C, 3) F, 4) N, 5) CI, 6) P

Answer»

have NICE DAY BRO

I PURPLE you

Discussion

31.	Calculate the molar mass of H2504 6h206
Answer» ANSWER: H×2×5×0×4×6×H×2×0×6 Explanation: TAKE ATO of ELEMENT and SOLVE it

31.

Calculate the molar mass of H2504 6h206

Answer»

ANSWER:

H×2×5×0×4×6×H×2×0×6

Explanation:

TAKE ATO of ELEMENT and SOLVE it

Discussion

32.	A force of 3 N acting perpendicular to a force of 4 N. what is the magnitude of the resultant force
Answer» Explanation: Therefore, if forces 3N,4N and 12N act at a point in MUTUALLY PERPENDICULAR directions then the magnitude of the resultant force would be 13N. *Hope* *this will* *HELP you* *Mark me* *as BRILLIANT*

32.

A force of 3 N acting perpendicular to a force of 4 N. what is the magnitude of the resultant force

Answer»

Explanation:

Therefore, if forces 3N,4N and 12N act at a point in MUTUALLY PERPENDICULAR directions then the magnitude of the resultant force would be 13N.

Hope this will HELP you

Mark me as BRILLIANT

Discussion

33.	Mention tool which maintaing biodiversity record.
Answer» ɪᴍᴩʟᴇᴍᴇɴᴛɪɴɢ ᴄᴏɴꜱᴇʀᴠᴀᴛɪᴏɴ ʀᴇꜱᴇʀᴠᴇ ᴄᴏɴᴛʀᴏʟʟɪɴɢ ɪɴᴠᴀꜱɪᴠᴇ ꜱᴩᴇᴄɪᴇꜱ ʀᴇꜱᴛᴏʀɪɴɢ ᴏꜰ ᴅᴇɢʀᴀᴅᴇᴅ ᴇᴄᴏꜱyꜱᴛᴇᴍ ᴛʀᴀɴꜱʟᴏᴄᴀᴛɪɴɢ ᴏʀ ᴄᴀᴩᴛɪᴠᴇ ʙʀᴇᴇᴅɪɴɢ ᴏꜰ ᴇɴᴅᴀɴɢᴇʀᴇᴅ ᴩʟᴀɴᴛꜱ ᴀɴᴅ ᴀɴɪᴍᴀʟꜱ.

33.

Mention tool which maintaing biodiversity record.

Answer»

ɪᴍᴩʟᴇᴍᴇɴᴛɪɴɢ ᴄᴏɴꜱᴇʀᴠᴀᴛɪᴏɴ ʀᴇꜱᴇʀᴠᴇ
ᴄᴏɴᴛʀᴏʟʟɪɴɢ ɪɴᴠᴀꜱɪᴠᴇ ꜱᴩᴇᴄɪᴇꜱ
ʀᴇꜱᴛᴏʀɪɴɢ ᴏꜰ ᴅᴇɢʀᴀᴅᴇᴅ ᴇᴄᴏꜱyꜱᴛᴇᴍ
ᴛʀᴀɴꜱʟᴏᴄᴀᴛɪɴɢ ᴏʀ ᴄᴀᴩᴛɪᴠᴇ ʙʀᴇᴇᴅɪɴɢ ᴏꜰ ᴇɴᴅᴀɴɢᴇʀᴇᴅ ᴩʟᴀɴᴛꜱ ᴀɴᴅ ᴀɴɪᴍᴀʟꜱ.

Discussion

34.	Describe a technique used to separate common salt from water
Answer» Answer: The SALT can be separated from the sea water by a simple process of evaporation. ... At this temperature the water STARTS evaporating and converting into water vapours. The water vapours then travel through the CONDENSER, which condenses the water vapours into PURE water. This pure water is collected in a CONTAINER.

34.

Describe a technique used to separate common salt from water

Answer»

Answer:

The SALT can be separated from the sea water by a simple process of evaporation. ... At this temperature the water STARTS evaporating and converting into water vapours. The water vapours then travel through the CONDENSER, which condenses the water vapours into PURE water. This pure water is collected in a CONTAINER.

Discussion

35.	when break is applied, the speed of cycle is reduced from 2 m/sec to 1 m/sec. Determine the work done during this interval ? given mass of cycle along with rider = 10 kg
Answer» Answer: -15 Explanation: Work done is equal to CHANGE in KINETIC ENERGY=(final-initial)Kinetic energy Kinetic energy=(1/2)mv^2 The work done by retardation will come negative

35.

when break is applied, the speed of cycle is reduced from 2 m/sec to 1 m/sec. Determine the work done during this interval ? given mass of cycle along with rider = 10 kg

Answer»

Answer:

-15

Explanation:

Work done is equal to CHANGE in KINETIC ENERGY=(final-initial)Kinetic energy

Kinetic energy=(1/2)mv^2

The work done by retardation will come negative

Discussion

36.	A circular copper disc of radius 0.1m rotates at 20π rad/s about an axis perpendicular to the disc through it centre. A uniform magnetic field 0.2T acts perpendicular to the disc.Calculate i) The p.d between axis and the rim.ii) Induced current in the circuit if the resistance of the circuit is 2 ohm.
Answer» ANSWER: why so SERIOUS..!!..!!..!

36.

A circular copper disc of radius 0.1m rotates at 20π rad/s about an axis perpendicular to the disc through it centre. A uniform magnetic field 0.2T acts perpendicular to the disc.Calculate i) The p.d between axis and the rim.ii) Induced current in the circuit if the resistance of the circuit is 2 ohm.

Answer»

ANSWER:

why so SERIOUS..!!..!!..!

Discussion

37.	डिफाइन फ्रिक्शनल फोर्स
Answer» ANSWER: hsjwbdkaj Explanation: H jjskchw NJ fpdo

37.

डिफाइन फ्रिक्शनल फोर्स

Answer»

ANSWER:

hsjwbdkaj

Explanation:

H jjskchw NJ fpdo

Discussion

38.	Divyansh riding his car with a velocity of 54km/h applies brakes such that he de-accelerates with a uniform acceleration of 2m/2 for 5 s. Calculate the final velocity of the car.
Answer» *MARK* ME AS *BRAINLIEST* apply the formula v=u+at let u be 54, a be 2 and t be 5 then, v=54+(2×5) =>v=54+10 =>v=64km/h

38.

Divyansh riding his car with a velocity of 54km/h applies brakes such that he de-accelerates with a uniform acceleration of 2m/2 for 5 s. Calculate the final velocity of the car.

Answer»

MARK ME AS BRAINLIEST

apply the formula

v=u+at

let u be 54, a be 2 and t be 5

then,

v=54+(2×5)

=>v=54+10

=>v=64km/h

Discussion

39.	Mercury undergoes cappilary depression. explain the reason for capillary depression
Answer» Answer: When the adhesive force of the liquid with the WALL of the container is less than the COHESIVE force of the liquid then we observe the capillary depression. MERCURY is a liquid that shows capillary depression. Mercury does not wet the WALLS of the container.

39.

Mercury undergoes cappilary depression. explain the reason for capillary depression

Answer»

Answer:

When the adhesive force of the liquid with the WALL of the container is less than the COHESIVE force of the liquid then we observe the capillary depression. MERCURY is a liquid that shows capillary depression. Mercury does not wet the WALLS of the container.

Discussion

40.	Find the distance and displacement of a circle
Answer» For example, if a BODY moves along a circle of RADIUS r and covers HALF the circumference, then displacement is given by s=2r. In one-dimensional motion displacement of the object will be the shortest distance between final and INITIAL point.

40.

Find the distance and displacement of a circle

Answer»

For example, if a BODY moves along a circle of RADIUS r and covers HALF the circumference, then displacement is given by s=2r. In one-dimensional motion displacement of the object will be the shortest distance between final and INITIAL point.

Discussion

41.	Suggest two changes that you would make to improve the reliability of the answer in the pendulum . The stopwatch cannot be changed .
Answer» ANSWER: SORRY i do know Explanation:

41.

Suggest two changes that you would make to improve the reliability of the answer in the pendulum . The stopwatch cannot be changed .

Answer»

ANSWER:

SORRY i do know

Explanation:

Discussion

42.	Define liquid pressure I need short answer
Answer» ANSWER: it REFERS to, the increase in pressure at INCREASING depths in a LIQUID :)

42.

Define liquid pressure I need short answer

Answer»

ANSWER:

it REFERS to, the increase in pressure at INCREASING depths in a LIQUID

:)

Discussion

43.	HOW IS CHANGE IN MOMENTUM EQUAL TO IMPULSE NUMERICALLY?
Answer» The IMPULSE experienced by the object equals the CHANGE in MOMENTUM of the object. In equation form, F • t = m • Δ v. In a collision, objects experience an impulse; the impulse CAUSES and is equal to the change in momentum Mark as BRAINLIEST

43.

HOW IS CHANGE IN MOMENTUM EQUAL TO IMPULSE NUMERICALLY?

Answer»

The IMPULSE experienced by the object equals the CHANGE in MOMENTUM of the object. In equation form, F • t = m • Δ v. In a collision, objects experience an impulse; the impulse CAUSES and is equal to the change in momentum

Mark as BRAINLIEST

Discussion

44.	Please help I want explanation as well cause I'm not able to understand log2 1/√8
Answer» Answer: I have 3 groups. 1. Control 2. Disease 3. Treatment. I WANT to lookup the GENE expression btw these groups, compared with control (whether is upregulated or downregulated). I did real-time qPCR and have ct values. I calculated ∆Ct = Ct[TARGET]-Ct[Housekeeping] ... and ∆∆Ct = (∆Exp.)-(∆Control) and got the -∆∆Ct log-fold-change. It looks all the values are almost same and not MUCH different between the groups.

44.

Please help I want explanation as well cause I'm not able to understand log2 1/√8

Answer»

Answer:

I have 3 groups. 1. Control 2. Disease 3. Treatment. I WANT to lookup the GENE expression btw these groups, compared with control (whether is upregulated or downregulated).

I did real-time qPCR and have ct values. I calculated ∆Ct = Ct[TARGET]-Ct[Housekeeping] ... and ∆∆Ct = (∆Exp.)-(∆Control) and got the -∆∆Ct log-fold-change. It looks all the values are almost same and not MUCH different between the groups.

Discussion

45.	Explain " Right hand and Left hand Palm rule" . Moving Charges And Magnetism. Kindly Don't spam ✅
Answer» Answer: I am not getting Explanation: Explain " RIGHT hand and Left hand Palm RULE" . MOVING CHARGES And MAGNETISM. Kindly Don't spam ✅

45.

Explain " Right hand and Left hand Palm rule" . Moving Charges And Magnetism. Kindly Don't spam ✅

Answer»

Answer:

I am not getting

Explanation:

Explain " RIGHT hand and Left hand Palm RULE" . MOVING CHARGES And MAGNETISM. Kindly Don't spam ✅

Discussion

46.	Define liquid pressure
Answer» Liquid pressure is the increase in pressure at increasing depths in a liquid. This pressure increases because the liquid at lower depths has to support all of the water above it. We calculate liquid pressure using the equation liquid pressure = mass X acceleration DUE to G density x depth in FLUID.

Discussion

47.	11 1 के संबंध8. नई कार्तीय चिह्न परिपाटी (New Cartesian SignConvention) के अनुसार सूत्रfमें निम्नलिखित में से कौन-सा सही है, जहाँ प्रतीकों केअपने सामान्य अर्थ हैं ?+Vu(a) यह केवल गोलीय दर्पणों पर लागू होता है ।(b) यह केवल गोलीय लेन्सों पर लागू होता है ।(c) यह गोलीय दर्पणों के साथ-साथ गोलीय लेन्सों परभी लागू होता है।(d) यह एक अमान्य सूत्र है ।J.F
Answer» trurehryeyjyejrdhthgdbdhfhnfhfhddhndhdgfhdh Explanation: PLEASE MARK me as a BRAINLIEST

47.

11 1 के संबंध8. नई कार्तीय चिह्न परिपाटी (New Cartesian SignConvention) के अनुसार सूत्रfमें निम्नलिखित में से कौन-सा सही है, जहाँ प्रतीकों केअपने सामान्य अर्थ हैं ?+Vu(a) यह केवल गोलीय दर्पणों पर लागू होता है ।(b) यह केवल गोलीय लेन्सों पर लागू होता है ।(c) यह गोलीय दर्पणों के साथ-साथ गोलीय लेन्सों परभी लागू होता है।(d) यह एक अमान्य सूत्र है ।J.F

Answer»

trurehryeyjyejrdhthgdbdhfhnfhfhddhndhdgfhdh

Explanation:

PLEASE MARK me as a BRAINLIEST

Discussion

48.	Log2 (1/√8) =?im not balw to understand on how its 0
Answer» ANSWER: HOPE this is HELPFUL for you

48.

Log2 (1/√8) =?im not balw to understand on how its 0

Answer»

ANSWER:

HOPE this is HELPFUL for you

Discussion

49.	Is the frictional force acting in both situations are equal? Explain your answer
Answer» Answer: friction is a force that is around US all the time that offices RELATIVE motion between systems in contract but also allows us to MOVE which you have discovered if you have ever try to walk on ICE while a comment for that behaviour of friction is actually very complicated and is still not complicated understood we have to rely heavily on observations for whatever understandings we can gain . how ever we can still deal with its more general characteristics and UNDERSTAND the circumstances in which it behaves.

49.

Is the frictional force acting in both situations are equal? Explain your answer

Answer»

Answer:

friction is a force that is around US all the time that offices RELATIVE motion between systems in contract but also allows us to MOVE which you have discovered if you have ever try to walk on ICE while a comment for that behaviour of friction is actually very complicated and is still not complicated understood we have to rely heavily on observations for whatever understandings we can gain . how ever we can still deal with its more general characteristics and UNDERSTAND the circumstances in which it behaves.

Discussion

50.	In 1905 the British parititioned _______ on the basis of religion
Answer» ANSWER: bengal Explanation: HOPE this helps u pls MARK me the BRAINLIEST

50.

In 1905 the British parititioned _______ on the basis of religion

Answer»

ANSWER:

bengal

Explanation:

HOPE this helps u

pls MARK me the BRAINLIEST

Discussion

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Hope this will HELP you

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Complete the following reaction

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Define liquid pressure

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