6277 + Interview Questions in Physics Page 45 InterviewSolution

2201.	A solid cone of a base radius 10cm is cut into two parts through the mid-point of it's height, by a plane parallel to it's base. Find the ratio in the volumes of two parts of the cone.
Answer» A solid cone of a base radius 10cm is cut into two parts through the mid-point of it's height, by a plane parallel to it's base. Find the ratio in the volumes of two parts of the cone.

Discussion

2202.	The percentyage error in mass and speed ARE 2 PERCENTAGE AND 3 PERCENTAGE RSPECTIVELY WHAT IS THE MAXIMUM ERROR IN KINETIC ENERGY
Answer» The percentyage error in mass and speed ARE 2 PERCENTAGE AND 3 PERCENTAGE RSPECTIVELY WHAT IS THE MAXIMUM ERROR IN KINETIC ENERGY

Discussion

2203.	1. Weight of an object on the moon is 1/6th of its weight on the earth. True or False? 2. How much would a 70 kg man weigh on the moon? What would be his mass on the earth and on the moon? (Acceleration due to gravity on moon =1.63 m/s2) [3 MARKS]
Answer» 1. Weight of an object on the moon is 1/6th of its weight on the earth. True or False? 2. How much would a 70 kg man weigh on the moon? What would be his mass on the earth and on the moon? (Acceleration due to gravity on moon $= 1.63 m / s^{2}$ ) [3 MARKS]

Discussion

2204.	An ice-box is made of wood 1.75 cm thick, lined inside with cork 2 cm thick. If the temperature of the inner surface of the cork is steady at 0°C and that of the outer surface is steady at 12∘C, what is the temperature of the interface? The thermal conductivity of wood is 5 times that of cork.
Answer» An ice-box is made of wood 1.75 cm thick, lined inside with cork 2 cm thick. If the temperature of the inner surface of the cork is steady at 0°C and that of the outer surface is steady at $12^{\circ} C$ , what is the temperature of the interface? The thermal conductivity of wood is 5 times that of cork.

2204.

An ice-box is made of wood 1.75 cm thick, lined inside with cork 2 cm thick. If the temperature of the inner surface of the cork is steady at 0°C and that of the outer surface is steady at 12∘C, what is the temperature of the interface? The thermal conductivity of wood is 5 times that of cork.

Answer»

An ice-box is made of wood 1.75 cm thick, lined inside with cork 2 cm thick. If the temperature of the inner surface of the cork is steady at 0°C and that of the outer surface is steady at $12^{\circ} C$ , what is the temperature of the interface? The thermal conductivity of wood is 5 times that of cork.

Discussion

2205.	why the volume of ideal gas is less than real gas ?
Answer» why the volume of ideal gas is less than real gas ?

Discussion

2206.	What is the difference between cyclone and tornado?
Answer» What is the difference between cyclone and tornado?

Discussion

2207.	In which of the following case(s) can we say that the object is moving?
Answer» In which of the following case(s) can we say that the object is moving?

Discussion

2208.	Which of the option given below is not correct?
Answer» Which of the option given below is not correct?

Discussion

2209.	Which of the bones in the middle ear are responsible for amplification of the vibrations?
Answer» Which of the bones in the middle ear are responsible for amplification of the vibrations?

Discussion

2210.	A plane mirror is inclined at an angle θ=37∘ with horizontal surface. A particle is projected from point P (see figure) at t=0 with a velocity v=20 m/s at an angle α=53∘ with horizontal. Assuming the particle does not collide with the mirror. If in time t (in s), image will be momentarily at rest with respect to particle, Find 10t.
Answer» A plane mirror is inclined at an angle $θ = 37^{\circ}$ with horizontal surface. A particle is projected from point $P$ (see figure) at $t = 0$ with a velocity $v = 20 m/s$ at an angle $α = 53^{\circ}$ with horizontal. Assuming the particle does not collide with the mirror. If in time $t$ (in $s$ ), image will be momentarily at rest with respect to particle, Find $10 t$ .

Discussion

2211.	State the direction of heat transfer by way of convection.
Answer» State the direction of heat transfer by way of convection.

Discussion

2212.

The following data was obtained for a body of mass 1 kg dropped from a height of 5 metres: Distance above ground Velocity 5 m 0 m/s 3.2 m 6 m/s 0 m 10 m/s Show by calculations that the above data verifies the law of conservation of energy (Neglect air resistance). (g = 10 m/s2).

Answer» The following data was obtained for a body of mass 1 kg dropped from a height of 5 metres:

Distance above ground	Velocity
5 m	0 m/s
3.2 m	6 m/s
0 m	10 m/s

Show by calculations that the above data verifies the law of conservation of energy (Neglect air resistance). (g = 10 m/s²).

Discussion

2213.	A Galvanometer of resistance G is to be converted into ammeter, with the help of a shunt resistance S. If the ratio of heat dissipated through galvanometer and shunt is 3:4 then
Answer» A Galvanometer of resistance $G$ is to be converted into ammeter, with the help of a shunt resistance $S .$ If the ratio of heat dissipated through galvanometer and shunt is $3 : 4$ then

Discussion

2214.	A wire of resistance 12 ohm is bent to form a circle. What is its equivalent resistance across it's diameter?
Answer» A wire of resistance 12 ohm is bent to form a circle. What is its equivalent resistance across it's diameter?

Discussion

2215.	The value of θB (magnitude only ) for the beam shown in the figure is then the value of K is_____(kEI)30
Answer» The value of $θ_{B}$ (magnitude only ) for the beam shown in the figure is then the value of K is_____ $(\frac{k}{E I})$ 30

Discussion

2216.	if magnitude of charge on the plates of a capacitor is 0.12 micro coulomb ,then determine the work done in pulling the plates apart by 0.1mm.area of each plate is 100cm^2
Answer» if magnitude of charge on the plates of a capacitor is 0.12 micro coulomb ,then determine the work done in pulling the plates apart by 0.1mm.area of each plate is 100cm^2

Discussion

2217.	A layer of normally consolidated, saturated silty clay of 1.2 m thickness is subjected to one dimensional consolidation under a pressure increment of 25 kPa. The properties of the soil are: Specific gravity = 2.7. natural moisture content = 40% and compression index 0.45. The initial average effective stress within the layer is 125 kPa. Assuming Terzaghi s theory to be applicable, the primary consolidation settlement is mm20.56
Answer» A layer of normally consolidated, saturated silty clay of 1.2 m thickness is subjected to one dimensional consolidation under a pressure increment of 25 kPa. The properties of the soil are: Specific gravity = 2.7. natural moisture content = 40% and compression index 0.45. The initial average effective stress within the layer is 125 kPa. Assuming Terzaghi s theory to be applicable, the primary consolidation settlement is mm 20.56

2217.

A layer of normally consolidated, saturated silty clay of 1.2 m thickness is subjected to one dimensional consolidation under a pressure increment of 25 kPa. The properties of the soil are: Specific gravity = 2.7. natural moisture content = 40% and compression index 0.45. The initial average effective stress within the layer is 125 kPa. Assuming Terzaghi s theory to be applicable, the primary consolidation settlement is mm20.56

Answer»

A layer of normally consolidated, saturated silty clay of 1.2 m thickness is subjected to one dimensional consolidation under a pressure increment of 25 kPa. The properties of the soil are: Specific gravity = 2.7. natural moisture content = 40% and compression index 0.45. The initial average effective stress within the layer is 125 kPa. Assuming Terzaghi s theory to be applicable, the primary consolidation settlement is mm

20.56

Discussion

2218.	If a wire is stretched, so that its length is 20 % more than its initial length, the percentage increase in the resistance of the wire is :- (1) 40% (2) 10% (3) 44% (4) 25%
Answer» If a wire is stretched, so that its length is 20 % more than its initial length, the percentage increase in the resistance of the wire is :- (1) 40% (2) 10% (3) 44% (4) 25%

Discussion

2219.	Fill in the blanks. (a) It takes thousands of years for a ………… layer of soil to be formed. (b) We must use a fuel like ………… rather than fuels which are getting depleted. (c) ………… gas causes heat to be trapped in the earth’s atmosphere. (d) 20 August is observed as ………… Day. (e) ………… are also an integral part of a forest. (f) The trapping of heat in the earth’s atmosphere causes the danger of ………… .
Answer» Fill in the blanks. (a) It takes thousands of years for a ………… layer of soil to be formed. (b) We must use a fuel like ………… rather than fuels which are getting depleted. (c) ………… gas causes heat to be trapped in the earth’s atmosphere. (d) 20 August is observed as ………… Day. (e) ………… are also an integral part of a forest. (f) The trapping of heat in the earth’s atmosphere causes the danger of ………… .

2219.

Fill in the blanks. (a) It takes thousands of years for a ………… layer of soil to be formed. (b) We must use a fuel like ………… rather than fuels which are getting depleted. (c) ………… gas causes heat to be trapped in the earth’s atmosphere. (d) 20 August is observed as ………… Day. (e) ………… are also an integral part of a forest. (f) The trapping of heat in the earth’s atmosphere causes the danger of ………… .

Answer»

Fill in the blanks.

(a) It takes thousands of years for a ………… layer of soil to be formed.

(b) We must use a fuel like ………… rather than fuels which are getting depleted.

(c) ………… gas causes heat to be trapped in the earth’s atmosphere.

(d) 20 August is observed as ………… Day.

(e) ………… are also an integral part of a forest.

(f) The trapping of heat in the earth’s atmosphere causes the danger of ………… .

Discussion

2220.	List down the measures for lightning safety for outdoors.
Answer» List down the measures for lightning safety for outdoors.

Discussion

2221.	The volumes of two cylinders are a : b and their heights are c :d. The ratio of their diameters .
Answer» The volumes of two cylinders are a : b and their heights are c :d. The ratio of their diameters .

Discussion

2222.	43. How to find radius if area is given of circle
Answer» 43. How to find radius if area is given of circle

Discussion

2223.	Convert 42°C into °F.
Answer» Convert 42°C into °F.

Discussion

2224.	a body is moving with uniform retardation covers 3km before its speed is reduced to half of its initial value it comes under rest in another distance of
Answer» a body is moving with uniform retardation covers 3km before its speed is reduced to half of its initial value it comes under rest in another distance of

Discussion

2225.	Question 28 (i)B1, B2 and B3 are three identical bulbs connected as shown in figure. When all the three bulbs glow, a current of 3A is recorded by the ammeter A. (i) What happens to the glow of the other two bulbs when the bulb B1 gets fused?
Answer» Question 28 (i) $B_{1}, B_{2}$ and $B_{3}$ are three identical bulbs connected as shown in figure. When all the three bulbs glow, a current of 3A is recorded by the ammeter A. (i) What happens to the glow of the other two bulbs when the bulb $B_{1}$ gets fused?

Discussion

2226.	A thermally insulated vessel contains 150 g of water at 0∘C. Then the air from the vessel is pumped out adiabatically. A fraction of water turns into ice and the rest evaporates at 0∘C itself. The mass of evaporated water will be closest to(Latent heat of vaporization of water =2.10×106J kg−1 and Latent heat of fusion of water =3.36×105J kg−1)
Answer» A thermally insulated vessel contains $150 g$ of water at $0^{\circ} C$ . Then the air from the vessel is pumped out adiabatically. A fraction of water turns into ice and the rest evaporates at $0^{\circ} C$ itself. The mass of evaporated water will be closest to (Latent heat of vaporization of water $= 2.10 \times 10^{6} J k g^{- 1}$ and Latent heat of fusion of water $= 3.36 \times 10^{5} J k g^{- 1})$

Discussion

2227.	What is rate of change of acceleration?
Answer» What is rate of change of acceleration?

Discussion

2228.	14. what is electrolytic cell
Answer» 14. what is electrolytic cell

Discussion

2229.	Explain the working of an electric bell.
Answer» Explain the working of an electric bell.

Discussion

2230.	What is a magnetising field?
Answer» What is a magnetising field?

Discussion

2231.	11. At 320 K, a gas A2 is 20% dissociated to A(g). The standard free energy change at 320 K and 1 atm in J /mol is approximately : (R=8.314 J/Kmol ; ln 2 =0.693; ln 3=1.098) (1) 4763 (2) 2068 (3) 1844 (4) 4281
Answer» 11. At 320 K, a gas A2 is 20% dissociated to A(g). The standard free energy change at 320 K and 1 atm in J /mol is approximately : (R=8.314 J/Kmol ; ln 2 =0.693; ln 3=1.098) (1) 4763 (2) 2068 (3) 1844 (4) 4281

Discussion

2232.	Question 5Explain why holes are made in hanging banners and hoardings.
Answer» Question 5 Explain why holes are made in hanging banners and hoardings.

Discussion

2233.	The displacement of a particle from a point having position vector 2i^ + 4j^ to another point having position vector 5i^ + 1j^
Answer» The displacement of a particle from a point having position vector 2i^ + 4j^ to another point having position vector 5i^ + 1j^

Discussion

2234.	State two experiences that made you think that air exerts pressure (other than those given in the text).
Answer» State two experiences that made you think that air exerts pressure (other than those given in the text).

Discussion

2235.	A liquid is coming out from the orifice of tank and falls upto a maximum horizontal distance of 6 m. The heighth is equal to
Answer» A liquid is coming out from the orifice of tank and falls upto a maximum horizontal distance of 6 m. The heighth is equal to

Discussion

2236.	3. The mass of moon is 1% of mass of earth, The ratio ofgravitational pull of earth on moon and that of moon onearth will be(1) 1:1(3) 1:100(2) 1:10(4) 2:1
Answer» 3. The mass of moon is 1% of mass of earth, The ratio ofgravitational pull of earth on moon and that of moon onearth will be(1) 1:1(3) 1:100(2) 1:10(4) 2:1

Discussion

2237.	Ohm's Law describes the mathematical relationship between
Answer» Ohm's Law describes the mathematical relationship between

Discussion

2238.	25.a long wire is folded in the form of a circular coil and 100mA electric current flowing in it,then magnetic field at a point 1m away from the wire is? Explain in detail solving values
Answer» 25.a long wire is folded in the form of a circular coil and 100mA electric current flowing in it,then magnetic field at a point 1m away from the wire is? Explain in detail solving values

Discussion

2239.	The temperature of a body falls from 40∘C to 36∘C in 5 minutes when placed in a surrounding of constant temperature 16∘C . Find the time taken for the temperature of the body to become 32∘C.
Answer» The temperature of a body falls from $40^{\circ} C$ to $36^{\circ} C$ in 5 minutes when placed in a surrounding of constant temperature $16^{\circ} C$ . Find the time taken for the temperature of the body to become $32^{\circ} C$ .

Discussion

2240.	Harish ran a certain distance faster than Suresh. Which of the following fundamental physical quantity/quantities is/are useful for comparing their speeds?
Answer» Harish ran a certain distance faster than Suresh. Which of the following fundamental physical quantity/quantities is/are useful for comparing their speeds?

Discussion

2241.	A treasure box is of the volume 0.4 ×105 cu m, which equals to cu cm.
Answer» A treasure box is of the volume $0.4 \times 10^{5}$ cu m, which equals to cu cm.

Discussion

2242.	what is energy gap or band gap?
Answer» what is energy gap or band gap?

Discussion

2243.	When a paper ball is kept near the mouth of a plastic bottle and air is blown through the sides, it will be pushed out because ___.
Answer» When a paper ball is kept near the mouth of a plastic bottle and air is blown through the sides, it will be pushed out because ___.

2243.

When a paper ball is kept near the mouth of a plastic bottle and air is blown through the sides, it will be pushed out because ___.

Answer»

When a paper ball is kept near the mouth of a plastic bottle and air is blown through the sides, it will be pushed out because ___.

Discussion

2244.	the kinetic energy of a particle depends on the square of speed of the particle. If error in measurement of speed is 30%, the error in the measurement of kinetic energy will be
Answer» the kinetic energy of a particle depends on the square of speed of the particle. If error in measurement of speed is 30%, the error in the measurement of kinetic energy will be

Discussion

2245.	64.If the units of length, mass and time are doubled, what will be the change in work?
Answer» 64.If the units of length, mass and time are doubled, what will be the change in work?

Discussion

2246.	A ray of light after reflection from a mirror is known as reflected ray normal incident ray refracted ray
Answer» A ray of light after reflection from a mirror is known as reflected ray normal incident ray refracted ray

2246.

A ray of light after reflection from a mirror is known as reflected ray normal incident ray refracted ray

Answer»

A ray of light after reflection from a mirror is known as

reflected ray

normal

incident ray

refracted ray

Discussion

2247.	what are the differences between aqeous medium and liquid medium?
Answer» what are the differences between aqeous medium and liquid medium?

Discussion

2248.	At t=0, a car is moving East at 10m/s. Find its average acceleration between t=0 & 5 secs. If it is moving with a velocity 5m/s west at t=5secs.
Answer» At t=0, a car is moving East at 10m/s. Find its average acceleration between t=0 & 5 secs. If it is moving with a velocity 5m/s west at t=5secs.

Discussion

2249.	Question 18 When strong/high speed wind blows, an umbrella held upright at times gets upturned. Explain the reason.
Answer» Question 18 When strong/high speed wind blows, an umbrella held upright at times gets upturned. Explain the reason.

2249.

Question 18 When strong/high speed wind blows, an umbrella held upright at times gets upturned. Explain the reason.

Answer»

Question 18

When strong/high speed wind blows, an umbrella held upright at times gets upturned. Explain the reason.

Discussion

2250.

Question 16 The side mirror of a scooter got broken. The mechanic replaced it with a plane mirror. Mention any inconvenience that the rider will face while using it?

Answer»

Question 16

The side mirror of a scooter got broken. The mechanic replaced it with a plane mirror. Mention any inconvenience that the rider will face while using it?

Discussion

Explore topic-wise InterviewSolutions in .

A solid cone of a base radius 10cm is cut into two parts through the mid-point of it's height, by a plane parallel to it's base. Find the ratio in the volumes of two parts of the cone.

The percentyage error in mass and speed ARE 2 PERCENTAGE AND 3 PERCENTAGE RSPECTIVELY WHAT IS THE MAXIMUM ERROR IN KINETIC ENERGY

1. Weight of an object on the moon is 1/6th of its weight on the earth. True or False? 2. How much would a 70 kg man weigh on the moon? What would be his mass on the earth and on the moon? (Acceleration due to gravity on moon =1.63 m/s2) [3 MARKS]

An ice-box is made of wood 1.75 cm thick, lined inside with cork 2 cm thick. If the temperature of the inner surface of the cork is steady at 0°C and that of the outer surface is steady at 12∘C, what is the temperature of the interface? The thermal conductivity of wood is 5 times that of cork.

why the volume of ideal gas is less than real gas ?

What is the difference between cyclone and tornado?

In which of the following case(s) can we say that the object is moving?

Which of the option given below is not correct?

Which of the bones in the middle ear are responsible for amplification of the vibrations?

State the direction of heat transfer by way of convection.

The following data was obtained for a body of mass 1 kg dropped from a height of 5 metres: Distance above ground Velocity 5 m 0 m/s 3.2 m 6 m/s 0 m 10 m/s Show by calculations that the above data verifies the law of conservation of energy (Neglect air resistance). (g = 10 m/s2).

A Galvanometer of resistance G is to be converted into ammeter, with the help of a shunt resistance S. If the ratio of heat dissipated through galvanometer and shunt is 3:4 then

A wire of resistance 12 ohm is bent to form a circle. What is its equivalent resistance across it's diameter?

The value of θB (magnitude only ) for the beam shown in the figure is then the value of K is_____(kEI)30

if magnitude of charge on the plates of a capacitor is 0.12 micro coulomb ,then determine the work done in pulling the plates apart by 0.1mm.area of each plate is 100cm^2

If a wire is stretched, so that its length is 20 % more than its initial length, the percentage increase in the resistance of the wire is :- (1) 40% (2) 10% (3) 44% (4) 25%

List down the measures for lightning safety for outdoors.

The volumes of two cylinders are a : b and their heights are c :d. The ratio of their diameters .

43. How to find radius if area is given of circle

Convert 42°C into °F.

a body is moving with uniform retardation covers 3km before its speed is reduced to half of its initial value it comes under rest in another distance of

Question 28 (i)B1, B2 and B3 are three identical bulbs connected as shown in figure. When all the three bulbs glow, a current of 3A is recorded by the ammeter A. (i) What happens to the glow of the other two bulbs when the bulb B1 gets fused?

What is rate of change of acceleration?

14. what is electrolytic cell

Explain the working of an electric bell.

What is a magnetising field?

11. At 320 K, a gas A2 is 20% dissociated to A(g). The standard free energy change at 320 K and 1 atm in J /mol is approximately : (R=8.314 J/Kmol ; ln 2 =0.693; ln 3=1.098) (1) 4763 (2) 2068 (3) 1844 (4) 4281

Question 5Explain why holes are made in hanging banners and hoardings.

The displacement of a particle from a point having position vector 2i^ + 4j^ to another point having position vector 5i^ + 1j^

State two experiences that made you think that air exerts pressure (other than those given in the text).

A liquid is coming out from the orifice of tank and falls upto a maximum horizontal distance of 6 m. The heighth is equal to

3. The mass of moon is 1% of mass of earth, The ratio ofgravitational pull of earth on moon and that of moon onearth will be(1) 1:1(3) 1:100(2) 1:10(4) 2:1

Ohm's Law describes the mathematical relationship between

25.a long wire is folded in the form of a circular coil and 100mA electric current flowing in it,then magnetic field at a point 1m away from the wire is? Explain in detail solving values

The temperature of a body falls from 40∘C to 36∘C in 5 minutes when placed in a surrounding of constant temperature 16∘C . Find the time taken for the temperature of the body to become 32∘C.

Harish ran a certain distance faster than Suresh. Which of the following fundamental physical quantity/quantities is/are useful for comparing their speeds?

A treasure box is of the volume 0.4 ×105 cu m, which equals to cu cm.

what is energy gap or band gap?

When a paper ball is kept near the mouth of a plastic bottle and air is blown through the sides, it will be pushed out because ___.

the kinetic energy of a particle depends on the square of speed of the particle. If error in measurement of speed is 30%, the error in the measurement of kinetic energy will be

64.If the units of length, mass and time are doubled, what will be the change in work?

A ray of light after reflection from a mirror is known as reflected ray normal incident ray refracted ray

what are the differences between aqeous medium and liquid medium?

At t=0, a car is moving East at 10m/s. Find its average acceleration between t=0 & 5 secs. If it is moving with a velocity 5m/s west at t=5secs.

Question 18 When strong/high speed wind blows, an umbrella held upright at times gets upturned. Explain the reason.

Question 16 The side mirror of a scooter got broken. The mechanic replaced it with a plane mirror. Mention any inconvenience that the rider will face while using it?