6277 + Interview Questions in Physics Page 48 InterviewSolution

2351.	If a turbine is used in a fast flowing stream of river without any water storage facility. What energy conversion would take place for power generation?
Answer» If a turbine is used in a fast flowing stream of river without any water storage facility. What energy conversion would take place for power generation?

Discussion

2352.	a contracted spring is sunk in acid and then it melts.what happen of the potential energy stored in the spring
Answer» a contracted spring is sunk in acid and then it melts.what happen of the potential energy stored in the spring

Discussion

2353.	Where does the image form in eye in the case of presbyopia
Answer» Where does the image form in eye in the case of presbyopia

Discussion

2354.	A heater of 600 W is used for 5 hr. What will be the number of units of energy consumed by the heater?
Answer» A heater of $600 W$ is used for $5 hr$ . What will be the number of units of energy consumed by the heater?

Discussion

2355.	what is the velocity at which its kinetic energy is equals to its rest mass energy ?
Answer» what is the velocity at which its kinetic energy is equals to its rest mass energy ?

Discussion

2356.	A charged body has an electric flux F associated with it. Now if the body is placed inside a conducting shell then the electric flux outside the shell is
Answer» A charged body has an electric flux F associated with it. Now if the body is placed inside a conducting shell then the electric flux outside the shell is

Discussion

2357.	A wire has a mass (0.3+-0.003)g.radius(0.5+-0.005)and length(6+-0.06)cm The maximum permissible error in measuremebt of density is 1). 1 2). 2 3). 3. 4). 4
Answer» A wire has a mass (0.3+-0.003)g.radius(0.5+-0.005)and length(6+-0.06)cm The maximum permissible error in measuremebt of density is 1). 1 2). 2 3). 3. 4). 4

Discussion

2358.	Ram is playing with toys. He has a toy car and a toy tractor. The weights of the toy vehicles are given.The toy tractor is put on one side of the weighing balance and 2 toy cars are put on the other side of the weighing balance.Which side of the weighing balance will go down?Toy vehicleWeight in gramsCar122 gTractor236 g
Answer» Ram is playing with toys. He has a toy car and a toy tractor. The weights of the toy vehicles are given. The toy tractor is put on one side of the weighing balance and 2 toy cars are put on the other side of the weighing balance. Which side of the weighing balance will go down? $\begin{matrix} Toy vehicle & Weight in grams Car & 122 g Tractor & 236 g \end{matrix}$

Discussion

2359.	A charge -q & mass m is released from rest from surface of sphere of charge Q & charge density p C /m^3, then find out velocity at centre? ??
Answer» A charge -q & mass m is released from rest from surface of sphere of charge Q & charge density p C /m^3, then find out velocity at centre? ??

Discussion

2360.	Solar eclipse can be seen only on ___ day.
Answer» Solar eclipse can be seen only on ___ day.

Discussion

2361.	If train A covers the distance between Bangalore and Delhi in 40 hours and train B covers the same distance in 36 hours. Which train has a greater average speed?
Answer» If train A covers the distance between Bangalore and Delhi in 40 hours and train B covers the same distance in 36 hours. Which train has a greater average speed?

Discussion

2362.	You are standing at a distance 2 metre from a plane mirror 1.What is the distance of your image from the mirror? 2.What is the distance between you and your image?
Answer» You are standing at a distance 2 metre from a plane mirror 1.What is the distance of your image from the mirror? 2.What is the distance between you and your image?

2362.

You are standing at a distance 2 metre from a plane mirror 1.What is the distance of your image from the mirror? 2.What is the distance between you and your image?

Answer»

You are standing at a distance 2 metre from a plane mirror

1.What is the distance of your image from the mirror?

2.What is the distance between you and your image?

Discussion

2363.	A car moves from x to y with a uniform speed Vu and returns to y with a uniform speed Vd . The average speed for this round trip is
Answer» A car moves from x to y with a uniform speed Vu and returns to y with a uniform speed Vd . The average speed for this round trip is

Discussion

2364.	Sunlight does not reach directly in our rooms,but we can see things in our rooms.This is because of
Answer» Sunlight does not reach directly in our rooms,but we can see things in our rooms.This is because of

Discussion

2365.	a block of mass 10kg moving on inclined plane with cons†an t velocity 10 m/s the coefficient of kinetic friction between inclined plane and bloc
Answer» a block of mass 10kg moving on inclined plane with cons†an t velocity 10 m/s the coefficient of kinetic friction between inclined plane and bloc

Discussion

2366.	Find the relation between the x and y coordinates of the points marked on the map:
Answer» Find the relation between the x and y coordinates of the points marked on the map:

Discussion

2367.	Why are chimney exits in the kitchen placed on the top?
Answer» Why are chimney exits in the kitchen placed on the top?

Discussion

2368.	Advantages of an electromagnet over a permanent magnet is:
Answer» Advantages of an electromagnet over a permanent magnet is:

Discussion

2369.	A person operating on an earthmover actually is controlling all the moves. Is that controlling of the movements considered as work done?
Answer» A person operating on an earthmover actually is controlling all the moves. Is that controlling of the movements considered as work done?

Discussion

2370.	The colours in a rainbow are labelled as:
Answer» The colours in a rainbow are labelled as:

Discussion

2371.	Radiation power from a black body at a temperature 1500 Kelvin at distance 1 metre is 2W.If the temperature of source is increased to 3000K the power of radiation received at 2 metre will be
Answer» Radiation power from a black body at a temperature 1500 Kelvin at distance 1 metre is 2W.If the temperature of source is increased to 3000K the power of radiation received at 2 metre will be

Discussion

2372.	Question 26How is the power related to the speed at which a body can be lifted? How many kilograms will a man working at the power of 100 W, be able to lift at constant speed of 1 ms−1 vertically? (g=10 ms−2)
Answer» Question 26 How is the power related to the speed at which a body can be lifted? How many kilograms will a man working at the power of 100 W, be able to lift at constant speed of $1 m s^{- 1}$ vertically? $(g = 10 m s^{- 2})$

Discussion

2373.	21.A particle moves along a straight line such that its displacement at any time t is given by s=t^3-6t^2+3t then the velocity when the acleration is zero;
Answer» 21.A particle moves along a straight line such that its displacement at any time t is given by s=t^3-6t^2+3t then the velocity when the acleration is zero;

Discussion

2374.	In thundering and lightning, we see lightning first and hear thunder later because
Answer» In thundering and lightning, we see lightning first and hear thunder later because

Discussion

2375.	a constant pressure air thermometer gave a reading of 47 units of volume when immersed in ice cold water and 57 units when immersed in boiling water and 67 units in a boiling liquid.the boiling point of the liquid is
Answer» a constant pressure air thermometer gave a reading of 47 units of volume when immersed in ice cold water and 57 units when immersed in boiling water and 67 units in a boiling liquid.the boiling point of the liquid is

Discussion

2376.	64.The density of the material in CGS system of units is 4g/cm3. In a system of units in which unit of lenght is 10 cm and unit of mass is 100g , the value of density of material will be
Answer» 64.The density of the material in CGS system of units is 4g/cm3. In a system of units in which unit of lenght is 10 cm and unit of mass is 100g , the value of density of material will be

Discussion

2377.	How repulsion is sure check of charge why not attraction
Answer» How repulsion is sure check of charge why not attraction

Discussion

2378.	Question 21Calculate the average density of the earth in terms of g, G and R.
Answer» Question 21 Calculate the average density of the earth in terms of g, G and R.

Discussion

2379.	(a) While standing before a plane mirror, if you move your right hand to the right, which hand does your image move? (b) What is the angle of incidence of a ray if the reflected ray is at an angle of 90∘ to the incident ray? [3 MARKS]
Answer» (a) While standing before a plane mirror, if you move your right hand to the right, which hand does your image move? (b) What is the angle of incidence of a ray if the reflected ray is at an angle of $90^{\circ}$ to the incident ray? [3 MARKS]

Discussion

2380.	Why is AC dangerous than DC although in it current reverse periodically?
Answer» Why is AC dangerous than DC although in it current reverse periodically?

Discussion

2381.	Select a few examples that illustrate Bernoulli's principle.
Answer» Select a few examples that illustrate Bernoulli's principle.

Discussion

2382.	Which of the following are physical quantities? Speed of a car, how angry a person is, distance from earth to sun, how much a mother loves her child.
Answer» Which of the following are physical quantities? Speed of a car, how angry a person is, distance from earth to sun, how much a mother loves her child.

Discussion

2383.	A circular loop of flexible conducting material is kept in a magnetic field directed perpendicularly into the plane . By holding the loop at diametrically opposite points it is stretched outwards then in which direction current is induced in the coil?
Answer» A circular loop of flexible conducting material is kept in a magnetic field directed perpendicularly into the plane . By holding the loop at diametrically opposite points it is stretched outwards then in which direction current is induced in the coil?

Discussion

2384.	82.A particle executes SHM with time period 8s. Initially, it is at its mean position. Find the ratio of distance travelled in 1st second to that in 2nd second
Answer» 82.A particle executes SHM with time period 8s. Initially, it is at its mean position. Find the ratio of distance travelled in 1st second to that in 2nd second

Discussion

2385.	The heat from the hot water in a metal radiator passes through the metal and then spreads around the room. What are the main processes by which the heat is transferred through the radiator and then spread around the room?
Answer» The heat from the hot water in a metal radiator passes through the metal and then spreads around the room. What are the main processes by which the heat is transferred through the radiator and then spread around the room?

Discussion

2386.	A body A travels at 20 m s−1 and a body B travels at 30 m s−1. If the distance covered by these bodies is the same, what is the ratio of the time taken by A to the time taken by B?
Answer» A body A travels at $20 {m s}^{- 1}$ and a body B travels at $30 {m s}^{- 1}$ . If the distance covered by these bodies is the same, what is the ratio of the time taken by A to the time taken by B?

Discussion

2387.	What does external potential actually do to stop the current in an electrochemical cell or to reverse it's direction ?
Answer» What does external potential actually do to stop the current in an electrochemical cell or to reverse it's direction ?

Discussion

2388.	In which of the following, the molecules are closest to each other?
Answer» In which of the following, the molecules are closest to each other?

Discussion

2389.	An artificial satellite is revolving in a circular orbit at height of 1200 km above the surface of planet. If the radius of the planet is 6400 km and mass is 9×1023 kg, the orbital speed is (G=6.7×10−11 Nm2/kg2)
Answer» An artificial satellite is revolving in a circular orbit at height of $1200 km$ above the surface of planet. If the radius of the planet is $6400 km$ and mass is $9 \times 10^{23} kg$ , the orbital speed is ( $G = 6.7 \times 10^{- 11}$ ${Nm}^{2} / {kg}^{2}$ )

Discussion

2390.	What will be the equilibrium constant at 127 degree C . If equilibrium constant at 27'C is 4 . For the reaction N2+3H2⟶2NH3. Change in enthalpy is -46.06KJ
Answer» What will be the equilibrium constant at 127 degree C . If equilibrium constant at 27'C is 4 . For the reaction $N_{2} + 3 H_{2} ⟶ 2 N H_{3}$ . Change in enthalpy is -46.06KJ

Discussion

2391.	12.976 g of lead combines with 2.004 g of form pbo2. pbo2 can also be produced by heating lead nitrate and it was found that the percentage of oxygen present in pbo2 is 13.38\cdot/\cdot with the help of given illustrate the law of cons†an t compositio
Answer» 12.976 g of lead combines with 2.004 g of form pbo2. pbo2 can also be produced by heating lead nitrate and it was found that the percentage of oxygen present in pbo2 is 13.38\cdot/\cdot with the help of given illustrate the law of cons†an t compositio

Discussion

2392.	Tim observes a man doing yoga through his pinhole camera. Identify the image that Tim sees on the screen.
Answer» Tim observes a man doing yoga through his pinhole camera. Identify the image that Tim sees on the screen.

Discussion

2393.	Thebulb in the circuit shown in Figure doesnot glow. Can you identify the problem? Make necessary changes in thecircuit to make the bulb glow.
Answer» The bulb in the circuit shown in Figure does not glow. Can you identify the problem? Make necessary changes in the circuit to make the bulb glow.

2393.

Thebulb in the circuit shown in Figure doesnot glow. Can you identify the problem? Make necessary changes in thecircuit to make the bulb glow.

Answer»

The
bulb in the circuit shown in Figure does
not glow. Can you identify the problem? Make necessary changes in the
circuit to make the bulb glow.

Discussion

2394.	Explain what are land and sea breeze.
Answer» Explain what are land and sea breeze.

Discussion

2395.	Which of the following is a form of mechanical energy?
Answer» Which of the following is a form of mechanical energy?

Discussion

2396.	In formula to find average velocity and average speed time interval refers to total time or what?
Answer» In formula to find average velocity and average speed time interval refers to total time or what?

Discussion

2397.	A concave lens is called a diverging lens because the incident rays are bent ________.
Answer» A concave lens is called a diverging lens because the incident rays are bent ________.

Discussion

2398.	When a ray of light falls normally on the mirror, then the angle of reflection will be
Answer» When a ray of light falls normally on the mirror, then the angle of reflection will be

Discussion

2399.	Is the influence of a magnet felt only near the poles or all around the magnet? What is this area of influence known as?
Answer» Is the influence of a magnet felt only near the poles or all around the magnet? What is this area of influence known as?

Discussion

2400.	A carpet of mass m made of an in extensible material is rolled along its length in the form of a cylinder of radius R and kept on a rough floor. If the carpet is unrolled without sliding to a radius R/4. Calculate decrease in potential energy?
Answer» A carpet of mass m made of an in extensible material is rolled along its length in the form of a cylinder of radius R and kept on a rough floor. If the carpet is unrolled without sliding to a radius R/4. Calculate decrease in potential energy?

Discussion

Explore topic-wise InterviewSolutions in .

If a turbine is used in a fast flowing stream of river without any water storage facility. What energy conversion would take place for power generation?

a contracted spring is sunk in acid and then it melts.what happen of the potential energy stored in the spring

Where does the image form in eye in the case of presbyopia

A heater of 600 W is used for 5 hr. What will be the number of units of energy consumed by the heater?

what is the velocity at which its kinetic energy is equals to its rest mass energy ?

A charged body has an electric flux F associated with it. Now if the body is placed inside a conducting shell then the electric flux outside the shell is

A wire has a mass (0.3+-0.003)g.radius(0.5+-0.005)and length(6+-0.06)cm The maximum permissible error in measuremebt of density is 1). 1 2). 2 3). 3. 4). 4

A charge -q & mass m is released from rest from surface of sphere of charge Q & charge density p C /m^3, then find out velocity at centre? ??

Solar eclipse can be seen only on ___ day.

If train A covers the distance between Bangalore and Delhi in 40 hours and train B covers the same distance in 36 hours. Which train has a greater average speed?

You are standing at a distance 2 metre from a plane mirror 1.What is the distance of your image from the mirror? 2.What is the distance between you and your image?

A car moves from x to y with a uniform speed Vu and returns to y with a uniform speed Vd . The average speed for this round trip is

Sunlight does not reach directly in our rooms,but we can see things in our rooms.This is because of

a block of mass 10kg moving on inclined plane with cons†an t velocity 10 m/s the coefficient of kinetic friction between inclined plane and bloc

Find the relation between the x and y coordinates of the points marked on the map:

Why are chimney exits in the kitchen placed on the top?

Advantages of an electromagnet over a permanent magnet is:

A person operating on an earthmover actually is controlling all the moves. Is that controlling of the movements considered as work done?

The colours in a rainbow are labelled as:

Radiation power from a black body at a temperature 1500 Kelvin at distance 1 metre is 2W.If the temperature of source is increased to 3000K the power of radiation received at 2 metre will be

Question 26How is the power related to the speed at which a body can be lifted? How many kilograms will a man working at the power of 100 W, be able to lift at constant speed of 1 ms−1 vertically? (g=10 ms−2)

21.A particle moves along a straight line such that its displacement at any time t is given by s=t^3-6t^2+3t then the velocity when the acleration is zero;

In thundering and lightning, we see lightning first and hear thunder later because

a constant pressure air thermometer gave a reading of 47 units of volume when immersed in ice cold water and 57 units when immersed in boiling water and 67 units in a boiling liquid.the boiling point of the liquid is

64.The density of the material in CGS system of units is 4g/cm3. In a system of units in which unit of lenght is 10 cm and unit of mass is 100g , the value of density of material will be

How repulsion is sure check of charge why not attraction

Question 21Calculate the average density of the earth in terms of g, G and R.

(a) While standing before a plane mirror, if you move your right hand to the right, which hand does your image move? (b) What is the angle of incidence of a ray if the reflected ray is at an angle of 90∘ to the incident ray? [3 MARKS]

Why is AC dangerous than DC although in it current reverse periodically?

Select a few examples that illustrate Bernoulli's principle.

Which of the following are physical quantities? Speed of a car, how angry a person is, distance from earth to sun, how much a mother loves her child.

A circular loop of flexible conducting material is kept in a magnetic field directed perpendicularly into the plane . By holding the loop at diametrically opposite points it is stretched outwards then in which direction current is induced in the coil?

82.A particle executes SHM with time period 8s. Initially, it is at its mean position. Find the ratio of distance travelled in 1st second to that in 2nd second

The heat from the hot water in a metal radiator passes through the metal and then spreads around the room. What are the main processes by which the heat is transferred through the radiator and then spread around the room?

A body A travels at 20 m s−1 and a body B travels at 30 m s−1. If the distance covered by these bodies is the same, what is the ratio of the time taken by A to the time taken by B?

What does external potential actually do to stop the current in an electrochemical cell or to reverse it's direction ?

In which of the following, the molecules are closest to each other?

An artificial satellite is revolving in a circular orbit at height of 1200 km above the surface of planet. If the radius of the planet is 6400 km and mass is 9×1023 kg, the orbital speed is (G=6.7×10−11 Nm2/kg2)

What will be the equilibrium constant at 127 degree C . If equilibrium constant at 27'C is 4 . For the reaction N2+3H2⟶2NH3. Change in enthalpy is -46.06KJ

12.976 g of lead combines with 2.004 g of form pbo2. pbo2 can also be produced by heating lead nitrate and it was found that the percentage of oxygen present in pbo2 is 13.38\cdot/\cdot with the help of given illustrate the law of cons†an t compositio

Tim observes a man doing yoga through his pinhole camera. Identify the image that Tim sees on the screen.

Thebulb in the circuit shown in Figure doesnot glow. Can you identify the problem? Make necessary changes in thecircuit to make the bulb glow.

Explain what are land and sea breeze.

Which of the following is a form of mechanical energy?

In formula to find average velocity and average speed time interval refers to total time or what?

A concave lens is called a diverging lens because the incident rays are bent ________.

When a ray of light falls normally on the mirror, then the angle of reflection will be

Is the influence of a magnet felt only near the poles or all around the magnet? What is this area of influence known as?

A carpet of mass m made of an in extensible material is rolled along its length in the form of a cylinder of radius R and kept on a rough floor. If the carpet is unrolled without sliding to a radius R/4. Calculate decrease in potential energy?