6277 + Interview Questions in Physics Page 52 InterviewSolution

2551.	What will be the temperature of the mixture when one litre of water at 30 degree Celsius is mixed with one litre of water at 50 degree Celsius? [2 MARKS]
Answer» What will be the temperature of the mixture when one litre of water at 30 degree Celsius is mixed with one litre of water at 50 degree Celsius? [2 MARKS]

Discussion

2552.	which is electrophilic centre in RCN.
Answer» which is electrophilic centre in RCN.

Discussion

2553.	four conductors of same resis†an ce connected to form a square.If the resis†an ce between diagonally opposite corner is 8 ohm,the resis†an ce between any two adjacent corners is
Answer» four conductors of same resis†an ce connected to form a square.If the resis†an ce between diagonally opposite corner is 8 ohm,the resis†an ce between any two adjacent corners is

Discussion

2554.	Question 24The townhall building is situated close to Boojho’s house. There is a clock on the top of the townhall building which rings the bell every hour. Boojho has noticed that the sound of the clock appears to be much clearer at night. Explain.
Answer» Question 24 The townhall building is situated close to Boojho’s house. There is a clock on the top of the townhall building which rings the bell every hour. Boojho has noticed that the sound of the clock appears to be much clearer at night. Explain.

Discussion

2555.	When are the following true for the path lengh? 1. It is zero. 2. It is greater than the magnitude of the displacement of the object.
Answer» When are the following true for the path lengh? 1. It is zero. 2. It is greater than the magnitude of the displacement of the object.

Discussion

2556.	21. A plate of mass M is placed on a solid and hollow sphere each of mass M if the speed of plate is v asuming pure rolling of sphere with all contacting sphere. find kinetic energy of the system
Answer» 21. A plate of mass M is placed on a solid and hollow sphere each of mass M if the speed of plate is v asuming pure rolling of sphere with all contacting sphere. find kinetic energy of the system

Discussion

2557.	Study the following graph and table carefully and answer the questions given below: Time taken to travel (in hours) by six vehicles on two different days Distance covered (in kilometers) by six vehicles on each day VehicleDay 1Day 2A832864B516774C693810D552765E935546F703636 What is the respective ratio between the speeds of vehicles D and vehicle E on day 2?
Answer» Study the following graph and table carefully and answer the questions given below: Time taken to travel (in hours) by six vehicles on two different days Distance covered (in kilometers) by six vehicles on each day $\begin{matrix} V e h i c l e & D a y 1 & D a y 2 A & 832 & 864 B & 516 & 774 C & 693 & 810 D & 552 & 765 E & 935 & 546 F & 703 & 636 \end{matrix}$ What is the respective ratio between the speeds of vehicles D and vehicle E on day 2?

Discussion

2558.	The ratio of displacement to distance is
Answer» The ratio of displacement to distance is

Discussion

2559.	a heater boils certain amount of water in 15 minute another heater boils same amount of water in 10 minute time taken to boil same amount of water when both are used in parallel is
Answer» a heater boils certain amount of water in 15 minute another heater boils same amount of water in 10 minute time taken to boil same amount of water when both are used in parallel is

Discussion

2560.	An ant first travels from P to R on a right-angled triangle PQR which is 13m long. Then it walks to point Q travelling 12m. Find the displacement and distance travelled by the ant?
Answer» An ant first travels from $P$ to $R$ on a right-angled triangle $P Q R$ which is 13m long. Then it walks to point $Q$ travelling 12m. Find the displacement and distance travelled by the ant?

2560.

An ant first travels from P to R on a right-angled triangle PQR which is 13m long. Then it walks to point Q travelling 12m. Find the displacement and distance travelled by the ant?

Answer»

An ant first travels from $P$ to $R$ on a right-angled triangle $P Q R$ which is 13m long. Then it walks to point $Q$ travelling 12m. Find the displacement and distance travelled by the ant?

Discussion

2561.	A car takes 4 hours to travel from Bangalore to Chennai, whereas a flight takes only 30 minutes to travel from Bangalore to Chennai. If the distance from Bangalore to Chennai by road is 400 km and by air is 150 km, find the average speed of flight and the average speed of car respectively.
Answer» A car takes $4 h o u r s$ to travel from Bangalore to Chennai, whereas a flight takes only $30 m i n u t e s$ to travel from Bangalore to Chennai. If the distance from Bangalore to Chennai by road is $400 k m$ and by air is $150 k m$ , find the average speed of flight and the average speed of car respectively.

Discussion

2562.	A cuboid shape aquarium is 100 cm long and 50 cm wide. It contains water up to a height of 30 cm. Find the volume of water in m3.
Answer» A cuboid shape aquarium is $100 c m$ long and $50 c m$ wide. It contains water up to a height of $30 c m$ . Find the volume of water in $m^{3}$ .

Discussion

2563.	What is the specific heat of 1 g water?
Answer» What is the specific heat of 1 g water?

Discussion

2564.	When will be the radiation emitted by the body will be more as compared to the radiation it absorbs ?
Answer» When will be the radiation emitted by the body will be more as compared to the radiation it absorbs ?

Discussion

2565.	Potential energy of certain
Answer» Potential energy of certain

Discussion

2566.	An ideal heat engine exhausting heat at 77^°C is to have a 30% efiiciencey .It must take heat at ?
Answer» An ideal heat engine exhausting heat at 77^°C is to have a 30% efiiciencey .It must take heat at ?

Discussion

2567.	71.A charged particle of mass m and charge q is projected from large distance towards another identical charge with speed v. Potential energy of system at minimum separation
Answer» 71.A charged particle of mass m and charge q is projected from large distance towards another identical charge with speed v. Potential energy of system at minimum separation

Discussion

2568.	What do you mean by transfer of heat? Explain the process of transfer of heat in solids, liquids and gases.
Answer» What do you mean by transfer of heat? Explain the process of transfer of heat in solids, liquids and gases.

Discussion

2569.	Ted was going to a hill station. When he started, he checked out the odometer of the car. The reading was 1111.22 km. After the journey, the reading was 1342.56 km. How many meters did Ted travel through?
Answer» Ted was going to a hill station. When he started, he checked out the odometer of the car. The reading was 1111.22 km. After the journey, the reading was 1342.56 km. How many meters did Ted travel through?

Discussion

2570.	If the body travels 10 m in 2 s, what is its speed in kmph?
Answer» If the body travels $10 m$ in $2 s$ , what is its speed in $kmph$ ?

Discussion

2571.	What is the difference between linear and rectilinear motion?
Answer» What is the difference between linear and rectilinear motion?

Discussion

2572.	For a concave mirror, paraxial rays are focused at distance R/2 from the pole and marginal rays are focused at distance X from the pole, the (1)x=R/2 (2)x=-f (3)x>R/2 (4)x
Answer» For a concave mirror, paraxial rays are focused at distance R/2 from the pole and marginal rays are focused at distance X from the pole, the (1)x=R/2 (2)x=-f (3)x>R/2 (4)x

Discussion

2573.	It's_________time when sun is overhead.
Answer» It's_________time when sun is overhead.

Discussion

2574.	18.The energy required to raise a body of mass m from earth surface to height of 3R (where R is radius of earth)?
Answer» 18.The energy required to raise a body of mass m from earth surface to height of 3R (where R is radius of earth)?

Discussion

2575.	A Person On a Morning Walk Completes one round around a circular park of diameter 500 m,in 1 minute.what will be the dis†an ce covered and the displacement at the end of 5 minutes 30 second
Answer» A Person On a Morning Walk Completes one round around a circular park of diameter 500 m,in 1 minute.what will be the dis†an ce covered and the displacement at the end of 5 minutes 30 second

Discussion

2576.	The following diagram shows an incident ray AO and the normal ON on a plane mirror. Find the angle of incidence and angle of reflection.
Answer» The following diagram shows an incident ray AO and the normal ON on a plane mirror. Find the angle of incidence and angle of reflection.

Discussion

2577.	Give an example each of a change that involves:(a) A change in colour(b) Evolution of a gas(c) Production of sound
Answer» Give an example each of a change that involves: (a) A change in colour (b) Evolution of a gas (c) Production of sound

Discussion

2578.	The SFD and BMD of a given loading diagram is
Answer» The SFD and BMD of a given loading diagram is

Discussion

2579.	If the distance between an object and its image from a plane mirror is 13 meters, how far should the object be kept to get the distance to 20 meters?
Answer» If the distance between an object and its image from a plane mirror is 13 meters, how far should the object be kept to get the distance to 20 meters?

Discussion

2580.	Consider a two - particle system with the particle having masses m1 and m2. If the first particle is pushed towards the centre of mass through a distance d, by what distance should be the second particle be moved to keep the centre of mass at the same position ?
Answer» Consider a two - particle system with the particle having masses $m_{1}$ and $m_{2}$ . If the first particle is pushed towards the centre of mass through a distance $d$ , by what distance should be the second particle be moved to keep the centre of mass at the same position ?

Discussion

2581.	Reaction between N2 and O2 takes place as follows:4N2 (g) + O2 (g) 2N2O (g)If a mixture of 0.482 mol N2 and 0.933 mol O2 is placed in a 10L reaction vessel and allowed to form N2O at a temperature for which KC=2.0 INTO ( 10 TO THE POWER -37 ), determine the concentration of equilibrium mixture.
Answer» Reaction between N2 and O2 takes place as follows: 4N2 (g) + O2 (g) 2N2O (g) If a mixture of 0.482 mol N2 and 0.933 mol O2 is placed in a 10L reaction vessel and allowed to form N2O at a temperature for which KC=2.0 INTO ( 10 TO THE POWER -37 ), determine the concentration of equilibrium mixture.

Discussion

2582.	Question 4Why do we prefer a convex mirror as a rear-view mirror in vehicles?
Answer» Question 4 Why do we prefer a convex mirror as a rear-view mirror in vehicles?

Discussion

2583.

Match the following. Group ‘A’ Group ‘B’ (a) reflection of sound 1. the pegs on a sitar (b) pollution of sound 2. water (c) medium of sound 3. echo-point (d) frequency of sound 4. noise

Answer»

Match the following.

Group ‘A’		Group ‘B’
(a)	reflection of sound	1.	the pegs on a sitar
(b)	pollution of sound	2.	water
(c)	medium of sound	3.	echo-point
(d)	frequency of sound	4.	noise

Discussion

2584.	An irregular solid, when placed on a centimetre graph paper and outline is drawn, covers 12 complete square and 8 incomplete squares. What is the approximate area bounded by the outline?
Answer» An irregular solid, when placed on a centimetre graph paper and outline is drawn, covers 12 complete square and 8 incomplete squares. What is the approximate area bounded by the outline?

Discussion

2585.	The combination of blue and red colour gives
Answer» The combination of blue and red colour gives

Discussion

2586.	Why does the land warm and cool down faster than the sea why not otherwise
Answer» Why does the land warm and cool down faster than the sea why not otherwise

Discussion

2587.	What is a solenoid?
Answer» What is a solenoid?

Discussion

2588.	Two identical metal spheres having charges +q and +q respectively. When they are separated by distance r, exerts force of repulsion F on each other. The spheres are allowed to touch and then moved back to same separation. The new force of repulsion will be
Answer» Two identical metal spheres having charges +q and +q respectively. When they are separated by distance r, exerts force of repulsion F on each other. The spheres are allowed to touch and then moved back to same separation. The new force of repulsion will be

Discussion

2589.	How living body can bear atmospheric pressure which is very much large as body would get crushe
Answer» How living body can bear atmospheric pressure which is very much large as body would get crushe

Discussion

2590.	Show that 7 ki power n cannot end with the digit 0 for any natural number n
Answer» Show that 7 ki power n cannot end with the digit 0 for any natural number n

Discussion

2591.	63.2 point charges placed at a distance r in vaccum experience a certain force.vthe distance at which they will experiance same force in a medium of dielectric constant K is
Answer» 63.2 point charges placed at a distance r in vaccum experience a certain force.vthe distance at which they will experiance same force in a medium of dielectric constant K is

Discussion

2592.	a car is moving on a straight road cover one third of the distance with a speed of 20m km/h and the rest with a speed of 60 km/h . The average speed of the car is
Answer» a car is moving on a straight road cover one third of the distance with a speed of 20m km/h and the rest with a speed of 60 km/h . The average speed of the car is

Discussion

2593.	What are the advantages of nuclear energy? [3 MARKS]
Answer» What are the advantages of nuclear energy? [3 MARKS]

Discussion

2594.	Which part of our body vibrates when we speak?
Answer» Which part of our body vibrates when we speak?

Discussion

2595.	Why do telephone wires sag during summer?
Answer» Why do telephone wires sag during summer?

Discussion

2596.	Explain why do we see phases of moon.
Answer» Explain why do we see phases of moon.

Discussion

2597.	Describe an experiment to show that air expands on heating.
Answer» Describe an experiment to show that air expands on heating.

Discussion

2598.	What is wavelength?
Answer» What is wavelength?

Discussion

2599.	You can make a copper wire but not a coal wire. It is because:
Answer» You can make a copper wire but not a coal wire. It is because:

Discussion

2600.	photo electric effect topic does not clear properly
Answer» photo electric effect topic does not clear properly

Discussion

Explore topic-wise InterviewSolutions in .

What will be the temperature of the mixture when one litre of water at 30 degree Celsius is mixed with one litre of water at 50 degree Celsius? [2 MARKS]

which is electrophilic centre in RCN.

four conductors of same resis†an ce connected to form a square.If the resis†an ce between diagonally opposite corner is 8 ohm,the resis†an ce between any two adjacent corners is

Question 24The townhall building is situated close to Boojho’s house. There is a clock on the top of the townhall building which rings the bell every hour. Boojho has noticed that the sound of the clock appears to be much clearer at night. Explain.

When are the following true for the path lengh? 1. It is zero. 2. It is greater than the magnitude of the displacement of the object.

21. A plate of mass M is placed on a solid and hollow sphere each of mass M if the speed of plate is v asuming pure rolling of sphere with all contacting sphere. find kinetic energy of the system

The ratio of displacement to distance is

a heater boils certain amount of water in 15 minute another heater boils same amount of water in 10 minute time taken to boil same amount of water when both are used in parallel is

An ant first travels from P to R on a right-angled triangle PQR which is 13m long. Then it walks to point Q travelling 12m. Find the displacement and distance travelled by the ant?

A car takes 4 hours to travel from Bangalore to Chennai, whereas a flight takes only 30 minutes to travel from Bangalore to Chennai. If the distance from Bangalore to Chennai by road is 400 km and by air is 150 km, find the average speed of flight and the average speed of car respectively.

A cuboid shape aquarium is 100 cm long and 50 cm wide. It contains water up to a height of 30 cm. Find the volume of water in m3.

What is the specific heat of 1 g water?

When will be the radiation emitted by the body will be more as compared to the radiation it absorbs ?

Potential energy of certain

An ideal heat engine exhausting heat at 77^°C is to have a 30% efiiciencey .It must take heat at ?

71.A charged particle of mass m and charge q is projected from large distance towards another identical charge with speed v. Potential energy of system at minimum separation

What do you mean by transfer of heat? Explain the process of transfer of heat in solids, liquids and gases.

Ted was going to a hill station. When he started, he checked out the odometer of the car. The reading was 1111.22 km. After the journey, the reading was 1342.56 km. How many meters did Ted travel through?

If the body travels 10 m in 2 s, what is its speed in kmph?

What is the difference between linear and rectilinear motion?

For a concave mirror, paraxial rays are focused at distance R/2 from the pole and marginal rays are focused at distance X from the pole, the (1)x=R/2 (2)x=-f (3)x>R/2 (4)x

It's_________time when sun is overhead.

18.The energy required to raise a body of mass m from earth surface to height of 3R (where R is radius of earth)?

A Person On a Morning Walk Completes one round around a circular park of diameter 500 m,in 1 minute.what will be the dis†an ce covered and the displacement at the end of 5 minutes 30 second

The following diagram shows an incident ray AO and the normal ON on a plane mirror. Find the angle of incidence and angle of reflection.

Give an example each of a change that involves:(a) A change in colour(b) Evolution of a gas(c) Production of sound

The SFD and BMD of a given loading diagram is

If the distance between an object and its image from a plane mirror is 13 meters, how far should the object be kept to get the distance to 20 meters?

Consider a two - particle system with the particle having masses m1 and m2. If the first particle is pushed towards the centre of mass through a distance d, by what distance should be the second particle be moved to keep the centre of mass at the same position ?

Reaction between N2 and O2 takes place as follows:4N2 (g) + O2 (g) 2N2O (g)If a mixture of 0.482 mol N2 and 0.933 mol O2 is placed in a 10L reaction vessel and allowed to form N2O at a temperature for which KC=2.0 INTO ( 10 TO THE POWER -37 ), determine the concentration of equilibrium mixture.

Question 4Why do we prefer a convex mirror as a rear-view mirror in vehicles?

Match the following. Group ‘A’ Group ‘B’ (a) reflection of sound 1. the pegs on a sitar (b) pollution of sound 2. water (c) medium of sound 3. echo-point (d) frequency of sound 4. noise

An irregular solid, when placed on a centimetre graph paper and outline is drawn, covers 12 complete square and 8 incomplete squares. What is the approximate area bounded by the outline?

The combination of blue and red colour gives

Why does the land warm and cool down faster than the sea why not otherwise

What is a solenoid?

Two identical metal spheres having charges +q and +q respectively. When they are separated by distance r, exerts force of repulsion F on each other. The spheres are allowed to touch and then moved back to same separation. The new force of repulsion will be

How living body can bear atmospheric pressure which is very much large as body would get crushe

Show that 7 ki power n cannot end with the digit 0 for any natural number n

63.2 point charges placed at a distance r in vaccum experience a certain force.vthe distance at which they will experiance same force in a medium of dielectric constant K is

a car is moving on a straight road cover one third of the distance with a speed of 20m km/h and the rest with a speed of 60 km/h . The average speed of the car is

What are the advantages of nuclear energy? [3 MARKS]

Which part of our body vibrates when we speak?

Why do telephone wires sag during summer?

Explain why do we see phases of moon.

Describe an experiment to show that air expands on heating.

What is wavelength?

You can make a copper wire but not a coal wire. It is because:

photo electric effect topic does not clear properly