67486 + Interview Questions in Secondary School in Physics

1.	What is the value of g (acceleration due to gravity)and G(Gravitational constant) ?
Answer» G= 9.8m/s^2 while G= 6.67x10^-11 N/m^2

Discussion

2.	A body throw vertically upward to a height of 30 m , and comes back .finda.total distance ,b.total displacement
Answer» A. 60m b.0m Mark it as brailliest

Discussion

3.	Plz help me with q no 6 nd 7
Answer» This is the answer.l HOPE it will HELP you.

Discussion

4.	What is s. I. system of units explain it's need
Answer» S. l STANDS for Standard UNIT which is accepted across the WORLD.

Discussion

5.	two charges 9e and 3e are placed at a distance r. what will be the distance where electric field intensity will be zero ?
Answer» Neutral.... DUE to system of TWO like point CHARGE.

Discussion

6.	Application of potentiometer to determine of internal resistance of a cell by potentiometer method
Answer» Potentiometer. Potentiometer is a device USED to MEASURE the internal resistance of a cell, to COMPARE the e.m.f. of two cells and potential DIFFERENCE across a resistor. It consists of a long wire of UNIFORM cross sectional area and of 10 m in length.

Discussion

7.	A piece of chalk can be broken into small particles by hammering but a piece of iron cannot be broken into small particles by hammering which characteristic of the particles of matter is illustrated by these observations?
Answer» In FIRST OBSERVATION the CHARACTERISTICS of MATTER is :- Particles of matter are continuously moving. In second observation the characteristics of matter is :- Particles of matter attract each other.

Discussion

8.	A person goes to certain distance at speed 4kmph. he returns on bicycle at the speed of 16kmph. find his average speed during the whole journey
Answer» LET the distance be X km so, time taken to go the distance with speed 4kmph = x/4 hr so, time taken to return with speed 16kmph = x / 16 hr so, total time = x/4 + x/16 = 5x/16 hr total distance = x + x = 2X so, average speed = 2x / (5x/16) = 32/5 = 6.4 kmph

Discussion

9.	Given question in figure
Answer» The FIRST ONE REPRESENTS UNIFORM ACCELERATION

Discussion

10.	Why do passengers in the bus tend to fall back when it starts suddenly
Answer» Due to inertia of rest. because when the BUS is STOPPED. there is NOTHING any motion on the bus but suddenly bus start and start to move but we human are STILL in rest so it gives us a force TOWARDS back and set us in motion with bus.

Discussion

11.	What is friction?What are the types of friction?
Answer» Hey mate ____________ here is ur answer WHAT IS FRICTION ? ANSWER :the RESISTANCE that one surface or object encounters when moving over another is called friction WHAT ARE THE TYPES OF FRICTION ?? There are four types of friction: (1) static (2)sliding (3)rolling (4) fluidfriction. HOPE IT HELPS U #AARCHI

Discussion

12.	What does projection of a vector ina particular direction mean
Answer» VECTOR will MAKE an angle with the direction. so a part EFFECT of vector must be in the direction .(it MAY or may not be zero but it is). so calculating the part effect of vector in the direction ,that is vcos theta,where theta is the angle from direction, is known as projection of vector. as in IMAGE it is vcosπ/3=v√3/2

Discussion

13.	An electric iron draws a current of 15 a from 220 v supply
Answer» Its resistance=V/I =220/15=14.66

Discussion

14.	Question :- A cube whose sides measure 2 cm each has a volume equal to ?
Answer» Hey there!!! Answer :- Since, 2 CM = 1200 m So, VOLUME of the cube = a3 = 1200 m×1200 m×1200 m = 8 x 106 Therefore, the volume = 8 x 106 I Hope it will HELP you☺️

Discussion

15.	A 200m train crosses bridge 400m log with velocity 36 km per hour. find time yaken
Answer» 60 MIN= 1 HR will be the ANSWER

Discussion

16.	A motercycle a to b with a uniform speed of 30 kmh-1 and return back with a speed of 20kmh-1 find the average speed
Answer» 50KMH I THINK it will HELP you

Discussion

17.	the velocity at maximum height of a projectile is half of its initial velocity of projectile u . find its horizontal range
Answer» FIRST we need to FIND the angle. we are given that VELOCITY at maximum is half of initial velocity . we know that at maximum height, the vertical component of velocity is zero that's why it is on maximum height. so only horizontal component remains. horizontal component is constant in whole motion. that is UCOS theta. so ucos theta=u/2. =>cos theta=1/2 =>theta=π/6 now range of projectile=(u^2 sin2π/6)/g. =u^2/2g

Discussion

18.	A tower is 61.25 m high. a rigid body is dropped from its top and at the same instant asecond body is thrown upwards from the bottom of the tower with such a velocity that they met in the middle of the tower. what is the velocity of the projection of the second body
Answer» 9.8m/s is the VELOCITY

Discussion

19.	What is unit and SI unit of potential difference ?
Answer» S.I UNIT of PD is VOLT

Discussion

20.	Difference bêtween Balanced and Unbalanced forces w¡th exåmple...!!!
Answer» SEE these IMAGES.....You will UNDERSTAND..it

Discussion

21.	G IS THE UNIVERSAL CONSTANT OF GRAVITATIONAL FORCE ∵G = F×R²÷M₁M₂ ,WHERE M₁ AND M2 ARWE THE MASS OF THE BODYIF WE INCREASE THE MASS OF BODY, THEN THE VALUE OF G SHIUD BE DECREASE BUT, WHY ITS VALUE IS ALWAYS REMAINS CONSTANT WHICH IS 6.67×10⁻¹¹ N×M²÷KG²
Answer» Yes it IA ur answer as we increases the MASS FORCE between them also increases which keeps the G CONSTANT

Discussion

22.	How are the different electric appliances connected in a house state three advantages of this type
Answer» HEYA!! --------- ---------------------------------------------------------------------------------------------------- ✴PARALLEL COMBINATION✴ ----------------------------------------------------------------------------------------------------- ✔In a household circuit , the APPLIANCES are CONNECTED in Parallel Combination . The advantages of connecting circuit in Parallel Combination are : ----------------------------------------------------------------------------------------------------- ✨It is very easy , simple to design and more reliable than series circuit . ✨The voltage in a parallel circuit is consistent i,e same . so all appliances GLOW equally . ✨it's components are independent . If one DEVICE fails , the others keep on working . ---------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------

Discussion

23.	A car of mass m starts from rest and accelerates so that
Answer» The FORCE will be m.(dv/dt)

Discussion

24.	A car is 120 m behind the bus, in how much time it will be 760 m ahead of bus
Answer» What is the VELOCITY of the BUS and the CAR.

Discussion

25.	A car moves 50 km/h in 1 hour and 60 km/h in next 1 hour then find the average speed
Answer» In 1st 1 HOUR, distance covered - 50 km In 2ND hour, distance covered -60 km total time 2 hour then avg SPEED -( 50+60)÷2=55 km/hr

Discussion

26.	Which type of direction
Answer» QUESTION is INCOMPLETE BROTHER..

Discussion

27.	What is half period in diffraction
Answer» The intensity at any POINT depends UPON the DISTANCE between point and Fresnel zone and OBLIQUITY between the point and zone under consideration.

Discussion

28.	What is zone plate in Fresnel diffraction?
Answer» There is your ANSWER .... A zone PLATE is a device USED to focus LIGHT or other things exhibiting wave character. Unlike lenses or curved mirrors however, zone plates usediffraction instead of refraction or reflection.

Discussion

29.	By knowing the voltage and current can we find the cable isolation resistance
Answer» By ohm's LAW.... "the voltage is DIRECTLY proportional to the current in CIRCUIT." it means V proportional to I. so we can SAY V=IR. here R is a proportional constant. its value =V/R.

Discussion

30.	If the velocity of a body increases by equal amount in equal intervals of time however small it is said to move with
Answer» The ANSWER is UNIFORM VELOCITY .........

Discussion

31.	Does the time required to completely charge a capacitor depend upon the applied EMF
Answer» YES,high emf means high POTENTIAL difference, so it will CHARGE faster for high emf.

Discussion

32.	What is Quantization of electric charge?
Answer» HEY MATE HERE IS YOUR ANSWER:- QUANTISATION OF CHARGE:- All free charges are integrable multiple of BASIC UNIT of charge DENOTES by electron. HOPE IT HELPS ☺️

Discussion

33.	A body is projected vertically upward with speed 40 m/s . the distance travelled by body in the last second of upward journey is what ( g= 9.8 m/s and neglect eff8 of air resistance)
Answer» HY.. Friend... Total distance travelled by body = H Distance travelled by body in last SECOND = d H = u^2 / (2g) = 40^2 / (2 * 9.8) = 1600 / 19.6 m = 81.63 m Time taken by body to REACH height H is sqrt(2H/g) = sqrt(2 * 81.63 / 9.8) = 4.08 seconds Use equation of motion..., S = ut + 0.5at^2 H - d = 40(t - 1) - 0.5g(t - 1)^2 81.63 - d = 40 (4.08 - 1) - 0.59.8(4.08 - 1)^2 81.63 - d = 76.71 d = 81.63 - 76.71 d = 4.9 m Thankyou

Discussion

34.	A ball is thrown vertically upwards from the top of a tower with velocity 100m/s .it strikes the pond near the base of the tower after 25s . find the height of tower
Answer» HEY MATE. HERE IS YOUR ANSWER- HOPE IT IS CORRECT. GIVEN- Velocity of the thrown stone=100m/s. Time it TAKEN to reach the pond=25s. Therefore,height of the TOWER= Distance it covered. i.e Distance=V×T $x = \frac{100m}{s} \times 25s$ =2500m answer. Therefore,Height of the tower is 2500m. HOPE IT HELPS YOU. PLEASE MARK IT AS BRAINLIEST.

Discussion

35.	Six pipes are fitted to a water tank.some of these pipes are used for filling
Answer» The VOLUME of water can be calculated by the FORMULA πr^2vt. where R is radius of pipes,V is speed of water and t is time.

Discussion

36.	A ball is dropped on the floor from a height of 12m
Answer» ANSWER: Explanation: The INITIAL potential energy is equal to the FINAL kinetic energy

36.

A ball is dropped on the floor from a height of 12m

Answer»

ANSWER:

Explanation:

The INITIAL potential energy is equal to the FINAL kinetic energy

Discussion

37.	A ball is thrown up and attains a maximum height of 20 m. calculate its initial speed
Answer» At maximum height, its VELOCITY is zero. by using the FORMULA v^2=u^2-2gh 0^2=u^2-2(10)20 =>u^2=400 =>u=20m/s

Discussion

38.	A ball is released from top of a tower of height h meters.it takes t seconds to reach the ground .what is the position of the ball in t/3 seconds
Answer» By the formula , s = ut + (1/2) at2 by replacing the VALUES, H = 0(T) + (1/2) (10) (T2) H = 5T2 . Therefore, Position of the ball at T/3 secs = (1/2) (10)(T/3)2 =5T2 / 9 = H/9 . Hence at T/3 secs the ball is H/9 meters from top of the tower. Hope it's HELP you Please mark me in brain list answer

Discussion

39.	A ball is dropped from height h. the velocity attain by ball just before reaching the ground is
Answer» A ball is DROPPED from height h. The ball has no velocity at start. So, Initial velocity = 0 m/s The ball is accelerated by Earth's Gravity. Acceleration of the ball = g. Now, The ball comes down a height. Acceleration due to gravity is 9.8 m/s² that means, the body will be change its velocity by 9.8 m/s every second during it's fall. Equations of motion v = u + at s = UT + at²/2 s = ut + at²/2 v² - u² = 2as We have the initial velocity of the ball, height it travels. So, Equation 1, 2 can't be used as we don't know the time it falls. Therefore, THIRD Equation is to be used. v² = u² + 2as v² = 0² + 2gh v² = 2gh $v = \sqrt{2gh}$ Therefore, The velocity of the ball is $v = \sqrt{2gh}$

39.

A ball is dropped from height h. the velocity attain by ball just before reaching the ground is

Answer»

A ball is DROPPED from height h.

The ball has no velocity at start.

So, Initial velocity = 0 m/s

The ball is accelerated by Earth's Gravity.

Acceleration of the ball = g.

Now, The ball comes down a height.

Acceleration due to gravity is 9.8 m/s² that means, the body will be change its velocity by 9.8 m/s every second during it's fall.

Equations of motion

v = u + at

s = UT + at²/2

s = ut + at²/2 v² - u² = 2as

We have the initial velocity of the ball, height it travels. So, Equation 1, 2 can't be used as we don't know the time it falls. Therefore, THIRD Equation is to be used.

v² = u² + 2as

v² = 0² + 2gh

v² = 2gh

$v = \sqrt{2gh}$

Therefore, The velocity of the ball is

$v = \sqrt{2gh}$

Discussion

40.	A ball is dropped from the top of the building. the bank takes 0.5s to fall past 3m height of a window some distance from the top of the building. if the speed of the ball at the top and at the bottom of the window are vt and vb respectively then
Answer» The BALL TAKES 0.5 sec to FALL past the 3 m length of a window some distance from the top of building ,How fast was ... Let, 'v t ' be the speed of the ball at the top point of the window, 'v b ' be the speed at the bottom point of ... The TIME taken to cross the window, t =0.5 s and the length of the window is S = 3 m

Discussion

41.	Mass of proton and what nature
Answer» NATURE= PROTON is the PART of the nucleus .It is denoted by CAPITAL A . It has tendency to attract electrons revolving around nucleus . It has MASS 1.67×10^-27 KG . MAGNITUDE= positive , 1.6×10^-19 C

Discussion

42.	a constant force acting on a body of mass 3 kg and changes its speed from 2 metre per second to 3.5 M per second in 25 seconds that the direction of motion remain unchanged what is magnitude and direction of force
Answer» HII bro here U can see the mass m=3kg and speed is u=2m/s and v=3.5m/s also the time is 25 SECS so, we know that F= ma and a= v-u/t therefore, a=3.5-2/25 =0.06 F= 3×0.06 =0.18 N

Discussion

43.	two cars A and B are moving with velocity of 60 km per hour and 45 km per hour respectively calculate the relative velocity of A w.r.t.B if case 1 both cards are travelling eastward and case 2 car A traveling eastwards and car B is traveling westward
Answer» Case1 when both are in same direction VELOCITY of A w.r.t. B i.e., VAB= Va-Vb=60-45=15km/h EAST ward case2 when both are in OPP. dir. then Vab=60 - (-45) =60+45=105km/h in EASTWARD

Discussion

44.	A body free falling from rest has velocity v after it falls down a height H.The distance it has to fall down for its velocity to become double is A)2H or B)4H or C)6H or D)8H
Answer» SENDING you WRITTEN SOLUTION

Discussion

45.	two men P and Q are standing at corners A and B of square ABCD of side 8m. they start moving along the track with constant speed 2m/s and 10m/s respectively. find the time when they will meet for the first time.
Answer» Lets see if person at POINT A is STATIONARY then speed of person at point B will be 8m/s. Speed = 8m/s Distance = 8*3 = 24 m Time = D/S = 24/8 = 3SEC.

45.

two men P and Q are standing at corners A and B of square ABCD of side 8m. they start moving along the track with constant speed 2m/s and 10m/s respectively. find the time when they will meet for the first time.

Answer»

Lets see if person at POINT A is STATIONARY then speed of person at point B will be 8m/s.

Speed = 8m/s

Distance = 8*3 = 24 m

Time = D/S = 24/8 = 3SEC.

Discussion

46.	Help me to solve this question.....
Answer» SENDING you WRITTEN SOLUTION

Discussion

47.	If mass is constant then how we are going to find percentage error of it
Answer» If in which have no VARIATIONS then they have not any ERROR...

Discussion

48.	What happens when light ray falls on the intersection point of curvature of convex lens and principal axis?
Answer» Answer: EXPLANATION: LIGHT SIMPLY gets refracted and forms a real image.

48.

What happens when light ray falls on the intersection point of curvature of convex lens and principal axis?

Answer»

Answer:

EXPLANATION:

LIGHT SIMPLY gets refracted and forms a real image.

Discussion

49.	Plz give the answer of questions no.2
Answer» $< 60kmperhour$

Discussion

50.	a swimmer can swim in still water with a speed of 3M per second while crossing a river his average speed is 5 metre per second if he process the river in the shortest possible time what is the speed of flow of water
Answer» Your ANSWER is in above IMAGE.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

What is the value of g (acceleration due to gravity)and G(Gravitational constant) ?

A body throw vertically upward to a height of 30 m , and comes back .finda.total distance ,b.total displacement

Plz help me with q no 6 nd 7

What is s. I. system of units explain it's need

two charges 9e and 3e are placed at a distance r. what will be the distance where electric field intensity will be zero ?

Application of potentiometer to determine of internal resistance of a cell by potentiometer method

A piece of chalk can be broken into small particles by hammering but a piece of iron cannot be broken into small particles by hammering which characteristic of the particles of matter is illustrated by these observations?

A person goes to certain distance at speed 4kmph. he returns on bicycle at the speed of 16kmph. find his average speed during the whole journey

Given question in figure

Why do passengers in the bus tend to fall back when it starts suddenly

What is friction?What are the types of friction?

What does projection of a vector ina particular direction mean

An electric iron draws a current of 15 a from 220 v supply

Question :- A cube whose sides measure 2 cm each has a volume equal to ?

A 200m train crosses bridge 400m log with velocity 36 km per hour. find time yaken

A motercycle a to b with a uniform speed of 30 kmh-1 and return back with a speed of 20kmh-1 find the average speed

the velocity at maximum height of a projectile is half of its initial velocity of projectile u . find its horizontal range

A tower is 61.25 m high. a rigid body is dropped from its top and at the same instant asecond body is thrown upwards from the bottom of the tower with such a velocity that they met in the middle of the tower. what is the velocity of the projection of the second body

What is unit and SI unit of potential difference ?

Difference bêtween Balanced and Unbalanced forces w¡th exåmple...!!!

G IS THE UNIVERSAL CONSTANT OF GRAVITATIONAL FORCE ∵G = F×R²÷M₁M₂ ,WHERE M₁ AND M2 ARWE THE MASS OF THE BODYIF WE INCREASE THE MASS OF BODY, THEN THE VALUE OF G SHIUD BE DECREASE BUT, WHY ITS VALUE IS ALWAYS REMAINS CONSTANT WHICH IS 6.67×10⁻¹¹ N×M²÷KG²

How are the different electric appliances connected in a house state three advantages of this type

A car of mass m starts from rest and accelerates so that

A car is 120 m behind the bus, in how much time it will be 760 m ahead of bus

A car moves 50 km/h in 1 hour and 60 km/h in next 1 hour then find the average speed

Which type of direction

What is half period in diffraction

What is zone plate in Fresnel diffraction?

By knowing the voltage and current can we find the cable isolation resistance

If the velocity of a body increases by equal amount in equal intervals of time however small it is said to move with

Does the time required to completely charge a capacitor depend upon the applied EMF

What is Quantization of electric charge?

A body is projected vertically upward with speed 40 m/s . the distance travelled by body in the last second of upward journey is what ( g= 9.8 m/s and neglect eff8 of air resistance)

A ball is thrown vertically upwards from the top of a tower with velocity 100m/s .it strikes the pond near the base of the tower after 25s . find the height of tower

Six pipes are fitted to a water tank.some of these pipes are used for filling

A ball is dropped on the floor from a height of 12m

A ball is thrown up and attains a maximum height of 20 m. calculate its initial speed

A ball is released from top of a tower of height h meters.it takes t seconds to reach the ground .what is the position of the ball in t/3 seconds

A ball is dropped from height h. the velocity attain by ball just before reaching the ground is

A ball is dropped from the top of the building. the bank takes 0.5s to fall past 3m height of a window some distance from the top of the building. if the speed of the ball at the top and at the bottom of the window are vt and vb respectively then

Mass of proton and what nature

a constant force acting on a body of mass 3 kg and changes its speed from 2 metre per second to 3.5 M per second in 25 seconds that the direction of motion remain unchanged what is magnitude and direction of force

two cars A and B are moving with velocity of 60 km per hour and 45 km per hour respectively calculate the relative velocity of A w.r.t.B if case 1 both cards are travelling eastward and case 2 car A traveling eastwards and car B is traveling westward

A body free falling from rest has velocity v after it falls down a height H.The distance it has to fall down for its velocity to become double is A)2H or B)4H or C)6H or D)8H

two men P and Q are standing at corners A and B of square ABCD of side 8m. they start moving along the track with constant speed 2m/s and 10m/s respectively. find the time when they will meet for the first time.

Help me to solve this question.....

If mass is constant then how we are going to find percentage error of it

What happens when light ray falls on the intersection point of curvature of convex lens and principal axis?

Plz give the answer of questions no.2

a swimmer can swim in still water with a speed of 3M per second while crossing a river his average speed is 5 metre per second if he process the river in the shortest possible time what is the speed of flow of water