16569 + Interview Questions in Physics Page 23 InterviewSolution

1101.	Who is the odd-one-out ?(1) Diesel, crude oil, natural gas, wind(2) A running car, hauling a log, a book kept on a table, picking up the school bag.(3) Sunlight, wind, waves, petrol(4) Leaving the fan on in a vacant room, leaving the TV on while working, using AC during winter, putting off the light when going out.
Answer» Who is the odd-one-out ? (1) Diesel, crude oil, natural gas, wind (2) A running car, hauling a log, a book kept on a table, picking up the school bag. (3) Sunlight, wind, waves, petrol (4) Leaving the fan on in a vacant room, leaving the TV on while working, using AC during winter, putting off the light when going out.

Discussion

1102.	Give an account on smooth muscles.
Answer» Give an account on smooth muscles.

Discussion

1103.	We use __________ lens to correct Hypermetropia
Answer» We use __________ lens to correct Hypermetropia

Discussion

1104.	The current flowing through a solenoid of self-inductance 1 H is given by i=5sinπt4. What will be the emf induced across the solenoid at time t=2 s.
Answer» The current flowing through a solenoid of self-inductance $1 H$ is given by $i = 5 sin \frac{π t}{4} .$ What will be the emf induced across the solenoid at time $t = 2 s .$

Discussion

1105.	A ray of light passes undeviated after refraction from a thin convex lens when the ray is incident at __.
Answer» A ray of light passes undeviated after refraction from a thin convex lens when the ray is incident at __.

Discussion

1106.	Describe when the work done by spring force will be positive and when it will be negative in a horizontal spring mass system
Answer» Describe when the work done by spring force will be positive and when it will be negative in a horizontal spring mass system

Discussion

1107.	93. A glass slab of thickness 4 centimetre contains the same number of waves as 5 centimetre of water when both are Traversed by the same monochromatic light if the refractive index of water is 4 by 3 what is that of glass 1) 5 by 3 2) 5 by 4 3) 16 by 15 4) 3 by 2
Answer» 93. A glass slab of thickness 4 centimetre contains the same number of waves as 5 centimetre of water when both are Traversed by the same monochromatic light if the refractive index of water is 4 by 3 what is that of glass 1) 5 by 3 2) 5 by 4 3) 16 by 15 4) 3 by 2

Discussion

1108.	10. How to find n factor and equivalent mass ?
Answer» 10. How to find n factor and equivalent mass ?

Discussion

1109.	16. [(1+i)/(1-i)]whole raise to power x = 1, then x= (A) 2n+1 (B)4n (C) 2n (D) 4n+1
Answer» 16. [(1+i)/(1-i)]whole raise to power x = 1, then x= (A) 2n+1 (B)4n (C) 2n (D) 4n+1

Discussion

1110.	In YDSE experiment with identical slit, the distance from central maxima where we get intensity half of maximum is [`D` , `d` and λ have usual meaning]
Answer» In YDSE experiment with identical slit, the distance from central maxima where we get intensity half of maximum is [`D` , `d` and $λ$ have usual meaning]

Discussion

1111.	What is the advantages of AC current over DC current ?
Answer» What is the advantages of AC current over DC current ?

Discussion

1112.	The same colour of light takes time t1 and t2 to travel the same distance x in two different media A and B respectively. The refractive index of medium A with respect to B will be
Answer» The same colour of light takes time $t_{1}$ and $t_{2}$ to travel the same distance $x$ in two different media $A$ and $B$ respectively. The refractive index of medium $A$ with respect to $B$ will be

Discussion

1113.	A body executes SHM under the influence of one force and has a period T_1 second and the same body executes SHM with period T_2 second when under the influence of another force. When both forces act simultaneously and in the same direction, then the time period of the same body is-
Answer» A body executes SHM under the influence of one force and has a period T_1 second and the same body executes SHM with period T_2 second when under the influence of another force. When both forces act simultaneously and in the same direction, then the time period of the same body is-

Discussion

1114.	Explain briefly, with the help of a neat labelled diagram, how does white light gets dispersed by a prism. On which surface of the prism, there is both the dispersion and deviation of light?
Answer» Explain briefly, with the help of a neat labelled diagram, how does white light gets dispersed by a prism. On which surface of the prism, there is both the dispersion and deviation of light?

Discussion

1115.	A parallel oblique beam of light falls on a (i) convex lens, (ii) concave lens. Draw a diagram in each case to show the refraction of light through the lens.
Answer» A parallel oblique beam of light falls on a (i) convex lens, (ii) concave lens. Draw a diagram in each case to show the refraction of light through the lens.

Discussion

1116.	A light and a heavy object have the same momentum. Which one of them will have the greater kinetic energy and why?
Answer» A light and a heavy object have the same momentum. Which one of them will have the greater kinetic energy and why?

Discussion

1117.	A variable resistor R is wired into a circuit as shown below. To what value should this variable resistor be set to generate 0.9 A of current passing through the 10 ohm resistor?
Answer» A variable resistor $R$ is wired into a circuit as shown below. To what value should this variable resistor be set to generate $0.9 A$ of current passing through the $10$ ohm resistor?

Discussion

1118.	What is the unit of resistivity
Answer» What is the unit of resistivity

Discussion

1119.	8. A refrigerator freezes 5 kg of water at O^° C into iceat 0^° C in a time interval of 20 minutes. Assumethat the room temperature is 20^° C. Calculate theminimum power needed to accomplish it.(1) 100 W(2) 102.5 W(3) 50 W(4) 107.8 W
Answer» 8. A refrigerator freezes 5 kg of water at O^° C into iceat 0^° C in a time interval of 20 minutes. Assumethat the room temperature is 20^° C. Calculate theminimum power needed to accomplish it.(1) 100 W(2) 102.5 W(3) 50 W(4) 107.8 W

Discussion

1120.	The power of lens measures it's degree ofA) convergence onlyB) divergence onlyC) convergence and divergenceD) none
Answer» The power of lens measures it's degree of A) convergence only B) divergence only C) convergence and divergence D) none

Discussion

1121.	which pair is not associated with complementary colours?(a) orange- blue(b) yellow- purple(c) green- purple(d) red- blue green
Answer» which pair is not associated with complementary colours? (a) orange- blue (b) yellow- purple (c) green- purple (d) red- blue green

Discussion

1122.	the quantity of electricity needed to deposited 31 g Cu i
Answer» the quantity of electricity needed to deposited 31 g Cu i

Discussion

1123.	Which type of forces are present in vulcanized rubber?
Answer» Which type of forces are present in vulcanized rubber?

Discussion

1124.	In a uniform circular motion, ___
Answer» In a uniform circular motion, ___

Discussion

1125.	Question 2What is meant by saying that the potential difference between two points is 1 V?
Answer» Question 2 What is meant by saying that the potential difference between two points is 1 V?

Discussion

1126.	Why is it easier to open a door by applying the force at the free end of it ?
Answer» Why is it easier to open a door by applying the force at the free end of it ?

Discussion

1127.	One mole of an ideal gas undergoes a process P=P0/(2+V0/V),(where P0 and V0 are constant).Change in temperature of the gas when volume is changed from V=V0 to V =3V0 is
Answer» One mole of an ideal gas undergoes a process P=P0/(2+V0/V),(where P0 and V0 are constant).Change in temperature of the gas when volume is changed from V=V0 to V =3V0 is

Discussion

1128.	The lengths and cross-sectional areas of four copper wires P, Q, R and S are respectively (l/2,2A),(2l,A/2),(2l,2A) and (l/2, A/2). The wire which has the maximum resistance is
Answer» The lengths and cross-sectional areas of four copper wires P, Q, R and S are respectively (l/2,2A),(2l,A/2),(2l,2A) and (l/2, A/2). The wire which has the maximum resistance is

Discussion

1129.	Two charged bodies are connected by a conducting wire. Up to what point will charges continue to flow through the wire
Answer» Two charged bodies are connected by a conducting wire. Up to what point will charges continue to flow through the wire

Discussion

1130.	The specific heat of aluminum is 900 J/kg.K It is at room temperature 30°C and normal atmospheric pressure. If 3600 J heat is supplied to it, what will be its final temperature?
Answer» The specific heat of aluminum is 900 J/kg.K It is at room temperature 30°C and normal atmospheric pressure. If 3600 J heat is supplied to it, what will be its final temperature?

Discussion

1131.	Which of the following represents the first law of Faraday [MP PMT 1991]
Answer» Which of the following represents the first law of Faraday [MP PMT 1991]

1131.

Which of the following represents the first law of Faraday [MP PMT 1991]

Answer»

Which of the following represents the first law of Faraday

[MP PMT 1991]

Discussion

1132.	the figure shows part of a complete circuit . The potential of the point A is greater than that if B by 19 volt. what is the potential difference in volts across the 3μ F capacitor. 2μ F 3μ F 4μ F A °-\vert \vert--\vertι--\vert \vert---\vertι--\vert\vert--° B 8V 15
Answer» the figure shows part of a complete circuit . The potential of the point A is greater than that if B by 19 volt. what is the potential difference in volts across the 3μ F capacitor. 2μ F 3μ F 4μ F A °-\vert \vert--\vertι--\vert \vert---\vertι--\vert\vert--° B 8V 15

Discussion

1133.	in a compound microscope focii of objective eyepiece are 2cm and 5cm respectively an object is placed at a distance 2.2cm from objective if final image is formed at least distance the magnifying power of microscope and approximate distance between objective and eyepiece is
Answer» in a compound microscope focii of objective eyepiece are 2cm and 5cm respectively an object is placed at a distance 2.2cm from objective if final image is formed at least distance the magnifying power of microscope and approximate distance between objective and eyepiece is

Discussion

1134.	the potential at a point 0.1m from an isolated poiny charge is +100v. the nature of the point charge is?
Answer» the potential at a point 0.1m from an isolated poiny charge is +100v. the nature of the point charge is?

Discussion

1135.	A charge qif opposite nature is revolvinground an infinitey long line linear charge of density lambda coloumb in a circular orbit of radius r. the speed of the revolving charge will be
Answer» A charge qif opposite nature is revolvinground an infinitey long line linear charge of density lambda coloumb in a circular orbit of radius r. the speed of the revolving charge will be

Discussion

1136.	Will there be an induced electric current if the magnet remains at rest?
Answer» Will there be an induced electric current if the magnet remains at rest?

Discussion

1137.	The graph, which depicts the results of Rutherford gold foil experiment with α−particle, is:θ: Scattering is:Y: Number of scattering α−particles detected (Plots are schematic and not to scale)
Answer» The graph, which depicts the results of Rutherford gold foil experiment with $α -$ particle, is: $θ :$ Scattering is: $Y :$ Number of scattering $α -$ particles detected (Plots are schematic and not to scale)

Discussion

1138.	difference between cathode rays and beta rays?
Answer» difference between cathode rays and beta rays?

Discussion

1139.	What is the famous equation governing nuclear fission?
Answer» What is the famous equation governing nuclear fission?

Discussion

1140.	A gas at 27 ∘C with a volume of 5 L expands by 45%, when the temperature is raised. If the pressure is kept constant, what is the final temperature of the gas?162
Answer» A gas at $27^{\circ} C$ with a volume of $5 L$ expands by $45 %$ , when the temperature is raised. If the pressure is kept constant, what is the final temperature of the gas? 162

Discussion

1141.	Select the pairs with same powers but different bases.
Answer» Select the pairs with same powers but different bases.

Discussion

1142.	In any region, if electric field is define asE (i +2j+ K) V/m, then the potential differencebetween two points A(0, 0, 0) and B(2, 3, 4) in thatregion, is
Answer» In any region, if electric field is define asE (i +2j+ K) V/m, then the potential differencebetween two points A(0, 0, 0) and B(2, 3, 4) in thatregion, is

Discussion

1143.	what is paralel RCL circuit?
Answer» what is paralel RCL circuit?

Discussion

1144.	Question 33Draw ray diagrams showing the image formation by a concave lens when an object is placed(a) at the focus of the lens (b) between focus and twice the focal length of the lens (c) beyond twice the focal length of the lens
Answer» Question 33 Draw ray diagrams showing the image formation by a concave lens when an object is placed (a) at the focus of the lens (b) between focus and twice the focal length of the lens (c) beyond twice the focal length of the lens

Discussion

1145.	48.A telescope has an objective of focal length 50 cm and an eye piece of focal length 5 cm.the least distance of distinct vision is 25.the telescope is focussed for distinct vision on a scale 200 cm away.the separation btw the objective and eye piece is
Answer» 48.A telescope has an objective of focal length 50 cm and an eye piece of focal length 5 cm.the least distance of distinct vision is 25.the telescope is focussed for distinct vision on a scale 200 cm away.the separation btw the objective and eye piece is

Discussion

1146.	In a large building , there are 15 bulbs of 40 W, 5 bulbs of 100 W, 5 fans of 80 W and 1 heater of 1 KW. If the voltage of main electric supply is 220 V then the minimum current capacity of the main fuse will be:
Answer» In a large building , there are $15$ bulbs of $40 W$ , $5$ bulbs of $100 W$ , $5$ fans of $80 W$ and $1$ heater of $1 KW$ . If the voltage of main electric supply is $220 V$ then the minimum current capacity of the main fuse will be:

Discussion

1147.	An AC circuit consists of a 220 Ω resistance and 0.7 H choke. Find the average power absorbed from 220 V and 50 Hz source connected in this circuit if the resistance and choke are joined in parallel.
Answer» An AC circuit consists of a $220 Ω$ resistance and $0.7 H$ choke. Find the average power absorbed from $220 V$ and $50 Hz$ source connected in this circuit if the resistance and choke are joined in parallel.

Discussion

1148.	Derive the expression for the heat produced to a current 'I' flowing for a time interval 't' through a resistor 'R' having a potential difference 'V' across its ends. With which name is the relation known? How much heat will an instrument of 12 W produce in one minute if it is connected to a battery of 12 V?
Answer» Derive the expression for the heat produced to a current 'I' flowing for a time interval 't' through a resistor 'R' having a potential difference 'V' across its ends. With which name is the relation known? How much heat will an instrument of 12 W produce in one minute if it is connected to a battery of 12 V?

Discussion

1149.	How is the refractive index of a material related to the speed of light in it ?
Answer» How is the refractive index of a material related to the speed of light in it ?

Discussion

1150.	The magnetic moments of two bar magnets of same size are in the ratio 1:2 when they are placed one over the other with theirsimilar poles together then their period of oscillation in a magnetic field is 3s if one of the magnets is reversed then period of oscillation in same field will be
Answer» The magnetic moments of two bar magnets of same size are in the ratio 1:2 when they are placed one over the other with theirsimilar poles together then their period of oscillation in a magnetic field is 3s if one of the magnets is reversed then period of oscillation in same field will be

Discussion

Explore topic-wise InterviewSolutions in .

Give an account on smooth muscles.

We use __________ lens to correct Hypermetropia

The current flowing through a solenoid of self-inductance 1 H is given by i=5sinπt4. What will be the emf induced across the solenoid at time t=2 s.

A ray of light passes undeviated after refraction from a thin convex lens when the ray is incident at __.

Describe when the work done by spring force will be positive and when it will be negative in a horizontal spring mass system

93. A glass slab of thickness 4 centimetre contains the same number of waves as 5 centimetre of water when both are Traversed by the same monochromatic light if the refractive index of water is 4 by 3 what is that of glass 1) 5 by 3 2) 5 by 4 3) 16 by 15 4) 3 by 2

10. How to find n factor and equivalent mass ?

16. [(1+i)/(1-i)]whole raise to power x = 1, then x= (A) 2n+1 (B)4n (C) 2n (D) 4n+1

In YDSE experiment with identical slit, the distance from central maxima where we get intensity half of maximum is [`D` , `d` and λ have usual meaning]

What is the advantages of AC current over DC current ?

The same colour of light takes time t1 and t2 to travel the same distance x in two different media A and B respectively. The refractive index of medium A with respect to B will be

A body executes SHM under the influence of one force and has a period T_1 second and the same body executes SHM with period T_2 second when under the influence of another force. When both forces act simultaneously and in the same direction, then the time period of the same body is-

Explain briefly, with the help of a neat labelled diagram, how does white light gets dispersed by a prism. On which surface of the prism, there is both the dispersion and deviation of light?

A parallel oblique beam of light falls on a (i) convex lens, (ii) concave lens. Draw a diagram in each case to show the refraction of light through the lens.

A light and a heavy object have the same momentum. Which one of them will have the greater kinetic energy and why?

A variable resistor R is wired into a circuit as shown below. To what value should this variable resistor be set to generate 0.9 A of current passing through the 10 ohm resistor?

What is the unit of resistivity

8. A refrigerator freezes 5 kg of water at O^° C into iceat 0^° C in a time interval of 20 minutes. Assumethat the room temperature is 20^° C. Calculate theminimum power needed to accomplish it.(1) 100 W(2) 102.5 W(3) 50 W(4) 107.8 W

The power of lens measures it's degree ofA) convergence onlyB) divergence onlyC) convergence and divergenceD) none

which pair is not associated with complementary colours?(a) orange- blue(b) yellow- purple(c) green- purple(d) red- blue green

the quantity of electricity needed to deposited 31 g Cu i

Which type of forces are present in vulcanized rubber?

In a uniform circular motion, ___

Question 2What is meant by saying that the potential difference between two points is 1 V?

Why is it easier to open a door by applying the force at the free end of it ?

One mole of an ideal gas undergoes a process P=P0/(2+V0/V),(where P0 and V0 are constant).Change in temperature of the gas when volume is changed from V=V0 to V =3V0 is

The lengths and cross-sectional areas of four copper wires P, Q, R and S are respectively (l/2,2A),(2l,A/2),(2l,2A) and (l/2, A/2). The wire which has the maximum resistance is

Two charged bodies are connected by a conducting wire. Up to what point will charges continue to flow through the wire

The specific heat of aluminum is 900 J/kg.K It is at room temperature 30°C and normal atmospheric pressure. If 3600 J heat is supplied to it, what will be its final temperature?

Which of the following represents the first law of Faraday [MP PMT 1991]

the figure shows part of a complete circuit . The potential of the point A is greater than that if B by 19 volt. what is the potential difference in volts across the 3μ F capacitor. 2μ F 3μ F 4μ F A °-\vert \vert--\vertι--\vert \vert---\vertι--\vert\vert--° B 8V 15

in a compound microscope focii of objective eyepiece are 2cm and 5cm respectively an object is placed at a distance 2.2cm from objective if final image is formed at least distance the magnifying power of microscope and approximate distance between objective and eyepiece is

the potential at a point 0.1m from an isolated poiny charge is +100v. the nature of the point charge is?

A charge qif opposite nature is revolvinground an infinitey long line linear charge of density lambda coloumb in a circular orbit of radius r. the speed of the revolving charge will be

Will there be an induced electric current if the magnet remains at rest?

The graph, which depicts the results of Rutherford gold foil experiment with α−particle, is:θ: Scattering is:Y: Number of scattering α−particles detected (Plots are schematic and not to scale)

difference between cathode rays and beta rays?

What is the famous equation governing nuclear fission?

A gas at 27 ∘C with a volume of 5 L expands by 45%, when the temperature is raised. If the pressure is kept constant, what is the final temperature of the gas?162

Select the pairs with same powers but different bases.

In any region, if electric field is define asE (i +2j+ K) V/m, then the potential differencebetween two points A(0, 0, 0) and B(2, 3, 4) in thatregion, is

what is paralel RCL circuit?

Question 33Draw ray diagrams showing the image formation by a concave lens when an object is placed(a) at the focus of the lens (b) between focus and twice the focal length of the lens (c) beyond twice the focal length of the lens

48.A telescope has an objective of focal length 50 cm and an eye piece of focal length 5 cm.the least distance of distinct vision is 25.the telescope is focussed for distinct vision on a scale 200 cm away.the separation btw the objective and eye piece is

In a large building , there are 15 bulbs of 40 W, 5 bulbs of 100 W, 5 fans of 80 W and 1 heater of 1 KW. If the voltage of main electric supply is 220 V then the minimum current capacity of the main fuse will be:

An AC circuit consists of a 220 Ω resistance and 0.7 H choke. Find the average power absorbed from 220 V and 50 Hz source connected in this circuit if the resistance and choke are joined in parallel.

How is the refractive index of a material related to the speed of light in it ?

The magnetic moments of two bar magnets of same size are in the ratio 1:2 when they are placed one over the other with theirsimilar poles together then their period of oscillation in a magnetic field is 3s if one of the magnets is reversed then period of oscillation in same field will be