6277 + Interview Questions in Physics Page 41 InterviewSolution

2001.	A 60 kg person climbs the stairs of height 20m in 10 minutes. Calculate the power delivered. Take g=10m/s2.
Answer» A 60 kg person climbs the stairs of height 20m in 10 minutes. Calculate the power delivered. Take $g = 10 m / s^{2}$ .

Discussion

2002.	The device used to make or break an electric circuit is known as a _________.
Answer» The device used to make or break an electric circuit is known as a _________.

Discussion

2003.	Two bodies with kinetic energies in the ratio 2:3 are moving with equal momentum. The ratio of their masses is
Answer» Two bodies with kinetic energies in the ratio 2:3 are moving with equal momentum. The ratio of their masses is

Discussion

2004.	Select the shape that has been divided into halves.
Answer» Select the shape that has been divided into halves.

Discussion

2005.	The power of a motor pump in your neighbour's house is 20 W. How much water per minute can the pump raise to a height of 10 m?
Answer» The power of a motor pump in your neighbour's house is $20 W$ . How much water per minute can the pump raise to a height of $10 m$ ?

Discussion

2006.	Question 23An alarm bell is kept inside a vessel as shown in Fig. 13.1. A person standing close to it can distinctly hear the sound of alarm. Now if the air inside the vessel is removed completely how will the loudness of alarm get affected for the same person?
Answer» Question 23 An alarm bell is kept inside a vessel as shown in Fig. 13.1. A person standing close to it can distinctly hear the sound of alarm. Now if the air inside the vessel is removed completely how will the loudness of alarm get affected for the same person?

Discussion

2007.	77.Hydrogen and Lithium never obeyed Octet law. Is this statement true?
Answer» 77.Hydrogen and Lithium never obeyed Octet law. Is this statement true?

Discussion

2008.	Why are solar cookers painted black from inside?
Answer» Why are solar cookers painted black from inside?

Discussion

2009.	At what temperature is the Celsius and Fahrenheit equal, if the relation between Celsius and Fahrenheit is F−329=C5
Answer» At what temperature is the Celsius and Fahrenheit equal, if the relation between Celsius and Fahrenheit is $\frac{F - 32}{9} = \frac{C}{5}$

Discussion

2010.	Question 3 (b)Fill in the blanks in the following statements:(b) A charged body ___an uncharged body towards it.
Answer» Question 3 (b) Fill in the blanks in the following statements: (b) A charged body ___an uncharged body towards it.

Discussion

2011.	{ A }110 V d.c. heater is used on an a.c. source, }} such that the heat produced is same as it }{ produces when connected to }110V de in same }} time-intervals. What would be the r.m.s. value of } the altemating voltage?
Answer» { A }110 V d.c. heater is used on an a.c. source, }} such that the heat produced is same as it }{ produces when connected to }110V de in same }} time-intervals. What would be the r.m.s. value of } the altemating voltage?

Discussion

2012.	Sometimes, a crackling sound is heard while taking off a sweater during winters. Explain.
Answer» Sometimes, a crackling sound is heard while taking off a sweater during winters. Explain.

Discussion

2013.	A car is going round a circle of radius r1 with cons†an t speed another car is going round a circle of radius r2 with cons†an t speed if both of them take same time to complete the circles the ratio of their angular speeds and linear speeds will be
Answer» A car is going round a circle of radius r1 with cons†an t speed another car is going round a circle of radius r2 with cons†an t speed if both of them take same time to complete the circles the ratio of their angular speeds and linear speeds will be

Discussion

2014.	mirror funniest breathing sticking giggle
Answer» mirror funniest breathing sticking giggle

Discussion

2015.	A technician has 10 resistors each of resistance 0.1ohm. The largest and smallest resistance that he can obtain by combining these resistors are?
Answer» A technician has 10 resistors each of resistance 0.1ohm. The largest and smallest resistance that he can obtain by combining these resistors are?

Discussion

2016.	A ball is rolled along the surface. The ball comes to a stop after some time. Which force is responsible for stopping the motion of the ball?
Answer» A ball is rolled along the surface. The ball comes to a stop after some time. Which force is responsible for stopping the motion of the ball?

Discussion

2017.	The area of the rectangle with length 11 cm and breadth equal to half its length will be
Answer» The area of the rectangle with length $11 c m$ and breadth equal to half its length will be

Discussion

2018.	How does the sea get hot at night?
Answer» How does the sea get hot at night?

Discussion

2019.	Pushing force making an angle theta to the horizontal is applied on a block of weight w placed on a horizontal table. If the angle of friction is fie, the magnitude of force required to move the body is equal to what?
Answer» Pushing force making an angle theta to the horizontal is applied on a block of weight w placed on a horizontal table. If the angle of friction is fie, the magnitude of force required to move the body is equal to what?

Discussion

2020.	Maharashtra,Stage-l,2016-TDA washing machine rated 300 W is operated oneand half an hour/day. If the cost of unit 3.50, findthe cost of energy to cooperative a washingmachine for the month of September(1) R 27.90(2) 35.25(3) 47.25(4) 55.90
Answer» Maharashtra,Stage-l,2016-TDA washing machine rated 300 W is operated oneand half an hour/day. If the cost of unit 3.50, findthe cost of energy to cooperative a washingmachine for the month of September(1) R 27.90(2) 35.25(3) 47.25(4) 55.90

Discussion

2021.	A glass containing a liquid of refractive index 2 appears to be half filled when viewed from top then the container is actually Options: One-third filled Three-fourth filled Two-third filled One-fourth filled
Answer» A glass containing a liquid of refractive index 2 appears to be half filled when viewed from top then the container is actually Options: One-third filled Three-fourth filled Two-third filled One-fourth filled

Discussion

2022.	If a small sphere of mass m and charge q is hungfrom a silk thread at an angle θ with the surface of a vertical charged conducting plate, then for equilibrium of sphere, the surface charge densityof the plate is
Answer» If a small sphere of mass m and charge q is hungfrom a silk thread at an angle θ with the surface of a vertical charged conducting plate, then for equilibrium of sphere, the surface charge densityof the plate is

Discussion

2023.	According to law of reflection, How this statement(angle of incidence = angle of reflection= 90 degree) is correct? how both equal to 90 or 0 degree?
Answer» According to law of reflection, How this statement(angle of incidence = angle of reflection= 90 degree) is correct? how both equal to 90 or 0 degree?

Discussion

2024.	When we bring a magnetic needle near a current carrying conductor, it gets deflected. This deflection is an example of:
Answer» When we bring a magnetic needle near a current carrying conductor, it gets deflected. This deflection is an example of:

Discussion

2025.	We know that shiny, well polished surfaces like mirror reflect light well. We can also see our reflection in still water because it acts like a mirror. So if I make a laser light or any torch light fall on still water, will it reflect light? Plz explain the answer
Answer» We know that shiny, well polished surfaces like mirror reflect light well. We can also see our reflection in still water because it acts like a mirror. So if I make a laser light or any torch light fall on still water, will it reflect light? Plz explain the answer

Discussion

2026.	What will happen to the reflected ray, if the incident ray falls along the normal to the mirror?
Answer» What will happen to the reflected ray, if the incident ray falls along the normal to the mirror?

Discussion

2027.	A boy was playing with a spongy ball; compressing and releasing it. The work done by the boy on the ball and the ball on the boy respectively at the time of compression is
Answer» A boy was playing with a spongy ball; compressing and releasing it. The work done by the boy on the ball and the ball on the boy respectively at the time of compression is

Discussion

2028.	A candle of 15 cm is placed at 10 cm from a convex lens. Its image is formed at 20 cm on the same side of the lens. What is the height of the image?30
Answer» A candle of 15 cm is placed at 10 cm from a convex lens. Its image is formed at 20 cm on the same side of the lens. What is the height of the image? 30

Discussion

2029.	28.What are stem corrections which are used in resistance thermometers?
Answer» 28.What are stem corrections which are used in resistance thermometers?

Discussion

2030.	The distance x covered by a body moving in a straight line in time t is given by xx = tt + 2t + 3. Theacceleration of the body will vary as:
Answer» The distance x covered by a body moving in a straight line in time t is given by xx = tt + 2t + 3. The acceleration of the body will vary as:

Discussion

2031.	The angle made by the incedent ray with the mirror is 40degree. Find angle incedent and angle of reflection.
Answer» The angle made by the incedent ray with the mirror is 40degree. Find angle incedent and angle of reflection.

Discussion

2032.	A person moves 30 m north, then 20 m east then 30 root 2 metre South west. His displacement from the origin position is
Answer» A person moves 30 m north, then 20 m east then 30 root 2 metre South west. His displacement from the origin position is

Discussion

2033.	Paheli had bought a new bottle of pickles from the market. She tried to open the metal cap to taste it but could not do so. She then took a bowl of hot water and immersed the upper end of the bottle in it for five minutes. She could easily open the bottle now. Can you give the reason for this?
Answer» Paheli had bought a new bottle of pickles from the market. She tried to open the metal cap to taste it but could not do so. She then took a bowl of hot water and immersed the upper end of the bottle in it for five minutes. She could easily open the bottle now. Can you give the reason for this?

Discussion

2034.	A matchbox measures 4 cm × 2.5cm × 1.5cm. What will be the volume of a packet containing 12 such boxes?
Answer» A matchbox measures 4 cm × 2.5cm × 1.5cm. What will be the volume of a packet containing 12 such boxes?

Discussion

2035.	How will you help your neighours in case cyclone approches your village town ?
Answer» How will you help your neighours in case cyclone approches your village town ?

Discussion

2036.	Explain the time period of a simple pendulum and when one oscillation competed of a simple pendulum.
Answer» Explain the time period of a simple pendulum and when one oscillation competed of a simple pendulum.

Discussion

2037.	Identify the thermometer shown in the images.
Answer» Identify the thermometer shown in the images.

Discussion

2038.	The distance between a compression and the immediate next rarefaction of a longitudinal wave is:
Answer» The distance between a compression and the immediate next rarefaction of a longitudinal wave is:

Discussion

2039.	the constituent wave of a stationary wave have amplitude, frequency,veloctyas 8cm,25HZ,150cm/s respectively. what is the amplitude of the stationary wave at x=2cm?
Answer» the constituent wave of a stationary wave have amplitude, frequency,veloctyas 8cm,25HZ,150cm/s respectively. what is the amplitude of the stationary wave at x=2cm?

Discussion

2040.	what is electrostatic force ? how can charged body attract charged body ??
Answer» what is electrostatic force ? how can charged body attract charged body ??

Discussion

2041.	Phoebe was moving at a speed of 12 km/hr for 3 hrs. Find the distance she would have travelled in those 3 hrs.
Answer» Phoebe was moving at a speed of 12 km/hr for 3 hrs. Find the distance she would have travelled in those 3 hrs.

Discussion

2042.	A spherical gas balloon of radius 16 meter subtends an angle 60∘ at the eye of the observer A while the angle of elevation of its center from the eye of A is 75∘. Then the height (in meter) of the top most point of the balloon from the level of the observer’s eye is
Answer» A spherical gas balloon of radius $16$ meter subtends an angle $60^{\circ}$ at the eye of the observer A while the angle of elevation of its center from the eye of A is $75^{\circ}$ . Then the height (in meter) of the top most point of the balloon from the level of the observer’s eye is

Discussion

2043.	the pressure at two points in a liquid in Pascal are p and 2P the Piston attached to the mouth of the liquid is given a push with pressure 2 Pa.The respective pressures at the two points now in the ratio
Answer» the pressure at two points in a liquid in Pascal are p and 2P the Piston attached to the mouth of the liquid is given a push with pressure 2 Pa.The respective pressures at the two points now in the ratio

Discussion

2044.	Magnetic field at the centre of current carrying loop of area A carrying current I is B then magnetic moment of this loop is
Answer» Magnetic field at the centre of current carrying loop of area A carrying current I is B then magnetic moment of this loop is

Discussion

2045.	To and fro motion of a particle along its mean position is also known as_________.
Answer» To and fro motion of a particle along its mean position is also known as_________.

Discussion

2046.	Which of the following is/are correct in case of a sound wave?
Answer» Which of the following is/are correct in case of a sound wave?

Discussion

2047.	A clinical thermometer is used to
Answer» A clinical thermometer is used to

Discussion

2048.	What is the ultimate cause of a tropical cyclone? Explain the formation of a tropical cyclone.
Answer» What is the ultimate cause of a tropical cyclone? Explain the formation of a tropical cyclone.

Discussion

2049.	Two spheres are made up of same material one is hollow and other is solid having same volume. They are heated at same temperature then(1) Heat radiated in solid is is more(2) Heat radiated in hollow is more(3) Heat radiated in both are equal(4) Depend on mass of the sphere
Answer» Two spheres are made up of same material one is hollow and other is solid having same volume. They are heated at same temperature then (1) Heat radiated in solid is is more (2) Heat radiated in hollow is more (3) Heat radiated in both are equal (4) Depend on mass of the sphere

Discussion

2050.	The ratio between the amount of mirror required to view the image and the height of the object is often observed is
Answer» The ratio between the amount of mirror required to view the image and the height of the object is often observed is

Discussion

Explore topic-wise InterviewSolutions in .

A 60 kg person climbs the stairs of height 20m in 10 minutes. Calculate the power delivered. Take g=10m/s2.

The device used to make or break an electric circuit is known as a _________.

Two bodies with kinetic energies in the ratio 2:3 are moving with equal momentum. The ratio of their masses is

Select the shape that has been divided into halves.

The power of a motor pump in your neighbour's house is 20 W. How much water per minute can the pump raise to a height of 10 m?

Question 23An alarm bell is kept inside a vessel as shown in Fig. 13.1. A person standing close to it can distinctly hear the sound of alarm. Now if the air inside the vessel is removed completely how will the loudness of alarm get affected for the same person?

77.Hydrogen and Lithium never obeyed Octet law. Is this statement true?

Why are solar cookers painted black from inside?

At what temperature is the Celsius and Fahrenheit equal, if the relation between Celsius and Fahrenheit is F−329=C5

Question 3 (b)Fill in the blanks in the following statements:(b) A charged body ___an uncharged body towards it.

{ A }110 V d.c. heater is used on an a.c. source, }} such that the heat produced is same as it }{ produces when connected to }110V de in same }} time-intervals. What would be the r.m.s. value of } the altemating voltage?

Sometimes, a crackling sound is heard while taking off a sweater during winters. Explain.

A car is going round a circle of radius r1 with cons†an t speed another car is going round a circle of radius r2 with cons†an t speed if both of them take same time to complete the circles the ratio of their angular speeds and linear speeds will be

mirror funniest breathing sticking giggle

A technician has 10 resistors each of resistance 0.1ohm. The largest and smallest resistance that he can obtain by combining these resistors are?

A ball is rolled along the surface. The ball comes to a stop after some time. Which force is responsible for stopping the motion of the ball?

The area of the rectangle with length 11 cm and breadth equal to half its length will be

How does the sea get hot at night?

Pushing force making an angle theta to the horizontal is applied on a block of weight w placed on a horizontal table. If the angle of friction is fie, the magnitude of force required to move the body is equal to what?

Maharashtra,Stage-l,2016-TDA washing machine rated 300 W is operated oneand half an hour/day. If the cost of unit 3.50, findthe cost of energy to cooperative a washingmachine for the month of September(1) R 27.90(2) 35.25(3) 47.25(4) 55.90

A glass containing a liquid of refractive index 2 appears to be half filled when viewed from top then the container is actually Options: One-third filled Three-fourth filled Two-third filled One-fourth filled

If a small sphere of mass m and charge q is hungfrom a silk thread at an angle θ with the surface of a vertical charged conducting plate, then for equilibrium of sphere, the surface charge densityof the plate is

According to law of reflection, How this statement(angle of incidence = angle of reflection= 90 degree) is correct? how both equal to 90 or 0 degree?

When we bring a magnetic needle near a current carrying conductor, it gets deflected. This deflection is an example of:

We know that shiny, well polished surfaces like mirror reflect light well. We can also see our reflection in still water because it acts like a mirror. So if I make a laser light or any torch light fall on still water, will it reflect light? Plz explain the answer

What will happen to the reflected ray, if the incident ray falls along the normal to the mirror?

A boy was playing with a spongy ball; compressing and releasing it. The work done by the boy on the ball and the ball on the boy respectively at the time of compression is

A candle of 15 cm is placed at 10 cm from a convex lens. Its image is formed at 20 cm on the same side of the lens. What is the height of the image?30

28.What are stem corrections which are used in resistance thermometers?

The distance x covered by a body moving in a straight line in time t is given by x*x = t*t + 2t + 3. Theacceleration of the body will vary as:

The angle made by the incedent ray with the mirror is 40degree. Find angle incedent and angle of reflection.

A person moves 30 m north, then 20 m east then 30 root 2 metre South west. His displacement from the origin position is

Paheli had bought a new bottle of pickles from the market. She tried to open the metal cap to taste it but could not do so. She then took a bowl of hot water and immersed the upper end of the bottle in it for five minutes. She could easily open the bottle now. Can you give the reason for this?​

A matchbox measures 4 cm × 2.5cm × 1.5cm. What will be the volume of a packet containing 12 such boxes?

How will you help your neighours in case cyclone approches your village town ?

Explain the time period of a simple pendulum and when one oscillation competed of a simple pendulum.

Identify the thermometer shown in the images.

The distance between a compression and the immediate next rarefaction of a longitudinal wave is:

the constituent wave of a stationary wave have amplitude, frequency,veloctyas 8cm,25HZ,150cm/s respectively. what is the amplitude of the stationary wave at x=2cm?

what is electrostatic force ? how can charged body attract charged body ??

Phoebe was moving at a speed of 12 km/hr for 3 hrs. Find the distance she would have travelled in those 3 hrs.

A spherical gas balloon of radius 16 meter subtends an angle 60∘ at the eye of the observer A while the angle of elevation of its center from the eye of A is 75∘. Then the height (in meter) of the top most point of the balloon from the level of the observer’s eye is

the pressure at two points in a liquid in Pascal are p and 2P the Piston attached to the mouth of the liquid is given a push with pressure 2 Pa.The respective pressures at the two points now in the ratio

Magnetic field at the centre of current carrying loop of area A carrying current I is B then magnetic moment of this loop is

To and fro motion of a particle along its mean position is also known as_________.

Which of the following is/are correct in case of a sound wave?

A clinical thermometer is used to

What is the ultimate cause of a tropical cyclone? Explain the formation of a tropical cyclone.

Two spheres are made up of same material one is hollow and other is solid having same volume. They are heated at same temperature then(1) Heat radiated in solid is is more(2) Heat radiated in hollow is more(3) Heat radiated in both are equal(4) Depend on mass of the sphere

The ratio between the amount of mirror required to view the image and the height of the object is often observed is

The distance x covered by a body moving in a straight line in time t is given by xx = tt + 2t + 3. Theacceleration of the body will vary as:

Paheli had bought a new bottle of pickles from the market. She tried to open the metal cap to taste it but could not do so. She then took a bowl of hot water and immersed the upper end of the bottle in it for five minutes. She could easily open the bottle now. Can you give the reason for this?