3752 + Interview Questions in Physics Page 10 InterviewSolution

451.	In the video it is said that the electrons goes and turns the turbine and comes back and again goes and comes back and so on.... But after some time the turbine stop after some hours as the battery gets over. Why does the battery gets over or stops working even through the electrons comes back?
Answer» In the video it is said that the electrons goes and turns the turbine and comes back and again goes and comes back and so on.... But after some time the turbine stop after some hours as the battery gets over. Why does the battery gets over or stops working even through the electrons comes back?

Discussion

452.	Determine the tranfomation ratio (TR) of the gear train connecting the the spindle and the lead screw of 4TPI required to cut 1.0mm pitch screw threads in a centre lathe.
Answer» Determine the tranfomation ratio (TR) of the gear train connecting the the spindle and the lead screw of $4 T P I$ required to cut $1.0 m m$ pitch screw threads in a centre lathe.

Discussion

453.	What is a magnetic compass? State its use. [3 MARKS]
Answer» What is a magnetic compass? State its use. [3 MARKS]

Discussion

454.	Define weather and climate.
Answer» Define weather and climate.

Discussion

455.	In an electric circuit, is the energy that we receive only the heat produced ?(in all the electrical appliances)
Answer» In an electric circuit, is the energy that we receive only the heat produced ?(in all the electrical appliances)

Discussion

456.

Listen to the sounds of the birds. Make a list of these words. For example: chirp, chirp, chirp, Now write four sentences on birds using the followings words. nest water chirp fly sky wings ____________________________________________________________________________________________________________________________Write words that rhyme with the words given below. The first one has been done for you. Grow know throw day bay _ think funny eat sing ______

Answer» Listen to the sounds of the birds. Make a list of these words.

For example:

chirp, chirp, chirp,

__________________________________

__________________________________

Now write four sentences on birds using the followings words.

nest

water

chirp

fly

sky

wings

__________________________________________________________________

__________________________________________________________________

__________________________________________________________________

Write words that rhyme with the words given below. The first one has been done for you.

Grow

know

throw

day	bay	_____________
think	____________	____________
funny	____________	____________
eat	____________	____________
sing	____________	____________

Discussion

457.	21. A rod of length L is hinged from one end. It isbrought to a horizontal position and released. Theangular velocity of the rod, when it is in verticalposition is
Answer» 21. A rod of length L is hinged from one end. It isbrought to a horizontal position and released. Theangular velocity of the rod, when it is in verticalposition is

Discussion

458.	what is the state of fire and light explain.
Answer» what is the state of fire and light explain.

Discussion

459.	A room is 5 m 40 cm long and 3m 75 cm wide. What area of carpet is needed to cover the floor?
Answer» A room is $5 m 40 c m$ long and $3 m 75 c m$ wide. What area of carpet is needed to cover the floor?

Discussion

460.	How to change cm of hg into atm or bar
Answer» How to change cm of hg into atm or bar

Discussion

461.	Of the various types of friction, which has the maximum value between two surfaces in contact?
Answer» Of the various types of friction, which has the maximum value between two surfaces in contact?

Discussion

462.	Question 2 (iv) Fill in the blank: Motion of the needle of a sewing machine is ___.
Answer» Question 2 (iv) Fill in the blank: Motion of the needle of a sewing machine is ___.

462.

Question 2 (iv) Fill in the blank: Motion of the needle of a sewing machine is ___.

Answer»

Question 2 (iv)

Fill in the blank:

Motion of the needle of a sewing machine is ___.

Discussion

463.	The formation of a rainbow shows that
Answer» The formation of a rainbow shows that

Discussion

464.	Name the two different types of translatory motion and explain each in brief.
Answer» Name the two different types of translatory motion and explain each in brief.

Discussion

465.	What can a force do?
Answer» What can a force do?

Discussion

466.	light is a wave , but its properties are just opposite to that of sound which is also a wav
Answer» light is a wave , but its properties are just opposite to that of sound which is also a wav

Discussion

467.	The minute hand of a clock is 14m long. the approximate distance covered and displacement of the tip of the minute hand during the interval the time changes from 5:05 to 7:20 pm are =
Answer» The minute hand of a clock is 14m long. the approximate distance covered and displacement of the tip of the minute hand during the interval the time changes from 5:05 to 7:20 pm are =

Discussion

468.	Why Pluto is not considered as a planet?
Answer» Why Pluto is not considered as a planet?

Discussion

469.	If ū is instantaneous velocity of particle and v is velocity of wave, then(1) ū is perpendicular to v(2) ū is parallel to v(3) lūl is equal to lvl (4) ū\|= (slope of wave form)\| v
Answer» If ū is instantaneous velocity of particle and v is velocity of wave, then (1) ū is perpendicular to v (2) ū is parallel to v (3) lūl is equal to lvl (4) ū\|= (slope of wave form)\| v

Discussion

470.	Statement 1: Area of a rectangle with length ‘l’ and breadth ‘b’ is equal to ‘l×b′.Statement 2: All squares are rectangles with l=bPick the correct option from the following
Answer» Statement 1: Area of a rectangle with length ‘l’ and breadth ‘b’ is equal to $‘ l \times b^{'}$ . Statement 2: All squares are rectangles with $l = b$ Pick the correct option from the following

470.

Statement 1: Area of a rectangle with length ‘l’ and breadth ‘b’ is equal to ‘l×b′.Statement 2: All squares are rectangles with l=bPick the correct option from the following

Answer»

Statement 1: Area of a rectangle with length ‘l’ and breadth ‘b’ is equal to $‘ l \times b^{'}$ .

Statement 2: All squares are rectangles with $l = b$

Pick the correct option from the following

Discussion

471.	Write a short note on two possible errors which can happen while measuring lengths.
Answer» Write a short note on two possible errors which can happen while measuring lengths.

Discussion

472.	A hall has 10 gates. In how many ways can a man enter the hall through one gate and come out through adifferent gate?
Answer» A hall has 10 gates. In how many ways can a man enter the hall through one gate and come out through adifferent gate?

Discussion

473.	The time period of a spring-block system is given as T = , where m is the mass of block and k is spring constant. If T and m are measured as T = (20.0 ± 0.1) s and m = (100 ± 1) g, then maximum percentage error in calculation of k is
Answer» The time period of a spring-block system is given as T = , where m is the mass of block and k is spring constant. If T and m are measured as T = (20.0 ± 0.1) s and m = (100 ± 1) g, then maximum percentage error in calculation of k is

Discussion

474.	A force is applied to a ball when it is:
Answer» A force is applied to a ball when it is:

Discussion

475.	Why would you not like to use a measuring tape made of an elastic material like rubber to measure distance? What would be some of the problems you would meet in telling someone about a distance you measured with such a tape?
Answer» Why would you not like to use a measuring tape made of an elastic material like rubber to measure distance? What would be some of the problems you would meet in telling someone about a distance you measured with such a tape?

Discussion

476.	A particle is moving on a circular track. If linear speed is doubled and radius is halved then what is the change in angular speed?
Answer» A particle is moving on a circular track. If linear speed is doubled and radius is halved then what is the change in angular speed?

Discussion

477.	Calculate the area of the blue surface in cm2.36
Answer» Calculate the area of the blue surface in ${cm}^{2}$ . 36

Discussion

478.	types of motion
Answer» types of motion

Discussion

479.	80. A rod of mass m and length L is fixed at point O.The hinge force on rod 1.when it is released from horizontal position 2. When the rod becomes vertical
Answer» 80. A rod of mass m and length L is fixed at point O.The hinge force on rod 1.when it is released from horizontal position 2. When the rod becomes vertical

Discussion

480.	Does a flagpole have a simple machine in it? If so, what is it? Can that machine change the direction of applied force? If so, briefly explain.
Answer» Does a flagpole have a simple machine in it? If so, what is it? Can that machine change the direction of applied force? If so, briefly explain.

Discussion

481.	Imagine a system of unit in which the unit of mass is 100kg,length is 1km , and time is 1min. Then 1joule in this system is equal to?
Answer» Imagine a system of unit in which the unit of mass is 100kg,length is 1km , and time is 1min. Then 1joule in this system is equal to?

Discussion

482.	14. How to solve unbalanced wheatstone bridge
Answer» 14. How to solve unbalanced wheatstone bridge

Discussion

483.	You are given a piece of iron and a bar magnet. How can you magnetize the piece of iron?
Answer» You are given a piece of iron and a bar magnet. How can you magnetize the piece of iron?

Discussion

484.	An artificial satellite is moving in a circular orbit of radius 42250km .calculate its speed if it take 24 hours to revolve around the earth
Answer» An artificial satellite is moving in a circular orbit of radius 42250km .calculate its speed if it take 24 hours to revolve around the earth

Discussion

485.	In domestic circuits, the appliances are generally connected in ___ combination.
Answer» In domestic circuits, the appliances are generally connected in ___ combination.

Discussion

486.	Oscillatory motion is defined as:
Answer» Oscillatory motion is defined as:

Discussion

487.	What is a screw? Give two examples
Answer» What is a screw? Give two examples

Discussion

488.	The magnetic field at the centre of a bar magnet, having pole strength 3.6 Am, magnetic length 12cm and cross sectional area 0.9 cm2 is (1)5 x 10-2 T(3) 3 x 10-2 T(2) 4 x 10-2 T(4) 2.5x 10-2 T
Answer» The magnetic field at the centre of a bar magnet, having pole strength 3.6 Am, magnetic length 12cm and cross sectional area 0.9 cm2 is (1)5 x 10-2 T (3) 3 x 10-2 T (2) 4 x 10-2 T (4) 2.5x 10-2 T

Discussion

489.	A thin wire that emits light in a bulb is known as _____.
Answer» A thin wire that emits light in a bulb is known as _____.

Discussion

490.	Answer in brief : (a) Which planets revolve around the sun? (b) What is another name for satellites? (c) What is included in the solar system? (d) What is meant by the earth’s crust? (e) Which minerals are found in the mantle in large quantities? (f) Describe the earth’s core with respect to its form and temperature.
Answer» Answer in brief : (a) Which planets revolve around the sun? (b) What is another name for satellites? (c) What is included in the solar system? (d) What is meant by the earth’s crust? (e) Which minerals are found in the mantle in large quantities? (f) Describe the earth’s core with respect to its form and temperature.

490.

Answer in brief : (a) Which planets revolve around the sun? (b) What is another name for satellites? (c) What is included in the solar system? (d) What is meant by the earth’s crust? (e) Which minerals are found in the mantle in large quantities? (f) Describe the earth’s core with respect to its form and temperature.

Answer»

Answer in brief :

(a) Which planets revolve around the sun?

(b) What is another name for satellites?

(c) What is included in the solar system?

(d) What is meant by the earth’s crust?

(e) Which minerals are found in the mantle in large quantities?

(f) Describe the earth’s core with respect to its form and temperature.

Discussion

491.	26 an insect trapped in circular groove of radius 12 cm moves along the groove steadily and completes 7 revolutions in 100 seconds. the linear speed of motion in cm/s is
Answer» 26 an insect trapped in circular groove of radius 12 cm moves along the groove steadily and completes 7 revolutions in 100 seconds. the linear speed of motion in cm/s is

Discussion

492.	Why Torque =PE sin why not Torque = PE cos
Answer» Why Torque =PE sin why not Torque = PE cos

Discussion

493.	How can be say that cathode rays travels in straight line
Answer» How can be say that cathode rays travels in straight line

Discussion

494.	An AC generator has an internal resis†an ce of R_g and an internal reac†an ce of X_g.It is used to supply power to a passive load consistin of resis†an ce R_{g } and a reac†an ce X_{l }For a max power to be delivered from the generator to load the value of X_{l }is
Answer» An AC generator has an internal resis†an ce of R_g and an internal reac†an ce of X_g.It is used to supply power to a passive load consistin of resis†an ce R_{g } and a reac†an ce X_{l }For a max power to be delivered from the generator to load the value of X_{l }is

Discussion

495.	Which basic unit of measurement can describe the distance from a point A to B?
Answer» Which basic unit of measurement can describe the distance from a point A to B?

Discussion

496.	when workdone by spring force is positive?
Answer» when workdone by spring force is positive?

Discussion

497.	A Person Enters A Circular Park of radius r and moves on circular park for t minutes and reaches the starting point. The angular displacement of object is
Answer» A Person Enters A Circular Park of radius r and moves on circular park for t minutes and reaches the starting point. The angular displacement of object is

Discussion

498.	65.A staircase contains three steps each 10cm high and 20cm wide.what should be the minimum horizontal velocity of a ball rolling off the uppermost plane so as to hit directly the lowest plane?
Answer» 65.A staircase contains three steps each 10cm high and 20cm wide.what should be the minimum horizontal velocity of a ball rolling off the uppermost plane so as to hit directly the lowest plane?

Discussion

499.	Draw a labelled diagram with the necessary switches to connect a bulb,a fan and a plug socket in a room with the mains.In what arrangement will you connect them to the mains ?
Answer» Draw a labelled diagram with the necessary switches to connect a bulb,a fan and a plug socket in a room with the mains.In what arrangement will you connect them to the mains ?

Discussion

500.	Can an object form two or more shadows at the same time? How?
Answer» Can an object form two or more shadows at the same time? How?

Discussion

Explore topic-wise InterviewSolutions in .

In the video it is said that the electrons goes and turns the turbine and comes back and again goes and comes back and so on.... But after some time the turbine stop after some hours as the battery gets over. Why does the battery gets over or stops working even through the electrons comes back?

Determine the tranfomation ratio (TR) of the gear train connecting the the spindle and the lead screw of 4TPI required to cut 1.0mm pitch screw threads in a centre lathe.

What is a magnetic compass? State its use. [3 MARKS]

Define weather and climate.

In an electric circuit, is the energy that we receive only the heat produced ?(in all the electrical appliances)

21. A rod of length L is hinged from one end. It isbrought to a horizontal position and released. Theangular velocity of the rod, when it is in verticalposition is

what is the state of fire and light explain.

A room is 5 m 40 cm long and 3m 75 cm wide. What area of carpet is needed to cover the floor?

How to change cm of hg into atm or bar

Of the various types of friction, which has the maximum value between two surfaces in contact?

Question 2 (iv) Fill in the blank: Motion of the needle of a sewing machine is ___.

The formation of a rainbow shows that

Name the two different types of translatory motion and explain each in brief.

What can a force do?

light is a wave , but its properties are just opposite to that of sound which is also a wav

The minute hand of a clock is 14m long. the approximate distance covered and displacement of the tip of the minute hand during the interval the time changes from 5:05 to 7:20 pm are =

Why Pluto is not considered as a planet?

If ū is instantaneous velocity of particle and v is velocity of wave, then(1) ū is perpendicular to v(2) ū is parallel to v(3) lūl is equal to lvl (4) ū|= (slope of wave form)| v

Statement 1: Area of a rectangle with length ‘l’ and breadth ‘b’ is equal to ‘l×b′.Statement 2: All squares are rectangles with l=bPick the correct option from the following

Write a short note on two possible errors which can happen while measuring lengths.

A hall has 10 gates. In how many ways can a man enter the hall through one gate and come out through adifferent gate?

The time period of a spring-block system is given as T = , where m is the mass of block and k is spring constant. If T and m are measured as T = (20.0 ± 0.1) s and m = (100 ± 1) g, then maximum percentage error in calculation of k is

A force is applied to a ball when it is:

Why would you not like to use a measuring tape made of an elastic material like rubber to measure distance? What would be some of the problems you would meet in telling someone about a distance you measured with such a tape?

A particle is moving on a circular track. If linear speed is doubled and radius is halved then what is the change in angular speed?

Calculate the area of the blue surface in cm2.36

types of motion

80. A rod of mass m and length L is fixed at point O.The hinge force on rod 1.when it is released from horizontal position 2. When the rod becomes vertical

Does a flagpole have a simple machine in it? If so, what is it? Can that machine change the direction of applied force? If so, briefly explain.

Imagine a system of unit in which the unit of mass is 100kg,length is 1km , and time is 1min. Then 1joule in this system is equal to?

14. How to solve unbalanced wheatstone bridge

You are given a piece of iron and a bar magnet. How can you magnetize the piece of iron?

An artificial satellite is moving in a circular orbit of radius 42250km .calculate its speed if it take 24 hours to revolve around the earth

In domestic circuits, the appliances are generally connected in ___ combination.

Oscillatory motion is defined as:

What is a screw? Give two examples

The magnetic field at the centre of a bar magnet, having pole strength 3.6 Am, magnetic length 12cm and cross sectional area 0.9 cm2 is (1)5 x 10-2 T(3) 3 x 10-2 T(2) 4 x 10-2 T(4) 2.5x 10-2 T

A thin wire that emits light in a bulb is known as _____.

26 an insect trapped in circular groove of radius 12 cm moves along the groove steadily and completes 7 revolutions in 100 seconds. the linear speed of motion in cm/s is

Why Torque =PE sin why not Torque = PE cos

How can be say that cathode rays travels in straight line

An AC generator has an internal resis†an ce of R_g and an internal reac†an ce of X_g.It is used to supply power to a passive load consistin of resis†an ce R_{g } and a reac†an ce X_{l }For a max power to be delivered from the generator to load the value of X_{l }is

Which basic unit of measurement can describe the distance from a point A to B?

when workdone by spring force is positive?

A Person Enters A Circular Park of radius r and moves on circular park for t minutes and reaches the starting point. The angular displacement of object is

65.A staircase contains three steps each 10cm high and 20cm wide.what should be the minimum horizontal velocity of a ball rolling off the uppermost plane so as to hit directly the lowest plane?

Draw a labelled diagram with the necessary switches to connect a bulb,a fan and a plug socket in a room with the mains.In what arrangement will you connect them to the mains ?

Can an object form two or more shadows at the same time? How?