50278 + Interview Questions in Physics

1.	In the given figure, All surface are smooth & g=10 m/s2. The force F required to keep 4 kg in equilibria is (Write upto two digits after the decimal point)
Answer» In the given figure, All surface are smooth & $g = 10 m / s^{2}$ . The force F required to keep 4 kg in equilibria is (Write upto two digits after the decimal point)

Discussion

2.	A block of mass 2 kg hangs from the rim of a wheel of radius 1 m. On releasing from rest the block falls through 5 m height in 2 s. The moment of inertia of the wheel will be
Answer» A block of mass 2 kg hangs from the rim of a wheel of radius 1 m. On releasing from rest the block falls through 5 m height in 2 s. The moment of inertia of the wheel will be

Discussion

3.	4.11 In a chamber, a uniform magnetic field of 6.5 G (1 G= 10 Tmaintained. An electron is shot into the fleld with a speed of4.8 x 10^° m s normal to the fleld. Explain why the path of thelectron is a circle. Determine the radius of the circular orbit.(e 1.6 x 109 C, m = 9. 1x10 kg)
Answer» 4.11 In a chamber, a uniform magnetic field of 6.5 G (1 G= 10 Tmaintained. An electron is shot into the fleld with a speed of4.8 x 10^° m s normal to the fleld. Explain why the path of thelectron is a circle. Determine the radius of the circular orbit.(e 1.6 x 109 C, m = 9. 1x10 kg)

Discussion

4.	what is the path of the charged particle moving in the magnetic field in a direction parallel to magnetic field?
Answer» what is the path of the charged particle moving in the magnetic field in a direction parallel to magnetic field?

Discussion

5.	in aregion of space suppose there exists a uniform electric fieldE=10i(V/m) if a positivr charge mmoves with a velocity v= -2j its potentialenerg
Answer» in aregion of space suppose there exists a uniform electric fieldE=10i(V/m) if a positivr charge mmoves with a velocity v= -2j its potentialenerg

Discussion

6.	Three resistances 2Ω,3Ω and 4Ω are connected in parallel. The ratio of currents passing through them when a potential difference is applied across its ends will be:
Answer» Three resistances $2 Ω, 3 Ω a n d 4 Ω$ are connected in parallel. The ratio of currents passing through them when a potential difference is applied across its ends will be:

Discussion

7.	A string of length l=1 m fixed at one end carries a mass m=1 kg at the other end. The string is rotating at a rate of 2π rev/s about the axis through the fixed end as shown in the figure. Then the tension in the string is
Answer» A string of length $l = 1 m$ fixed at one end carries a mass $m = 1 kg$ at the other end. The string is rotating at a rate of $\frac{2}{π} rev/s$ about the axis through the fixed end as shown in the figure. Then the tension in the string is

Discussion

8.	The molecules of a given mass of gas has r.m.s speed 400 m/s at 27∘ C and 105 N/m2 pressure . When the absolute temperature is doubled and the pressure is halved, the r.m.s. speed of the molecules of the same gas is
Answer» The molecules of a given mass of gas has r.m.s speed $400 m/s$ at $27^{\circ} C$ and $10^{5} {N/m}^{2}$ pressure . When the absolute temperature is doubled and the pressure is halved, the r.m.s. speed of the molecules of the same gas is

Discussion

9.	A block of mass 100 g is moved with a speed of 5.0 m/s at the highest point in a closed circular tube of radius 10 cm kept in a vertical plane. The cross-section of the tube is such that the block just fits in it. The block makes several oscillations inside the tube and finally stops at the lowest point. Find the work done by the tube on the block during the process.
Answer» A block of mass 100 g is moved with a speed of 5.0 m/s at the highest point in a closed circular tube of radius 10 cm kept in a vertical plane. The cross-section of the tube is such that the block just fits in it. The block makes several oscillations inside the tube and finally stops at the lowest point. Find the work done by the tube on the block during the process.

Discussion

10.	The equation of a particle executing SHM is x=(5m)sin[(π s−1)t+π3]. What is its amplitude, time period, maximum speed and velocity. At t = 1s?
Answer» The equation of a particle executing SHM is $x = (5 m) s i n [(π s^{- 1}) t + \frac{π}{3}]$ . What is its amplitude, time period, maximum speed and velocity. At t = 1s?

Discussion

11.	Three liquids of densities d,2d and 3d are mixed in equal proportions of weights. What is the relative density of the mixture, if d is the density of water?
Answer» Three liquids of densities $d, 2 d$ and $3 d$ are mixed in equal proportions of weights. What is the relative density of the mixture, if $d$ is the density of water?

Discussion

12.	The figure below shows the scale of a voltmeter.The least count of this voltmeter is :(1) 1 V(2) 0.5 V(3) 5 V(4) 0.05 V
Answer» The figure below shows the scale of a voltmeter. The least count of this voltmeter is : (1) 1 V (2) 0.5 V (3) 5 V (4) 0.05 V

Discussion

13.	A ball is dropped onto a fixed horizontal surface from height h0. The coefficient of restitution is e. Find the total distance D travelled by the ball before it comes to rest on the surface.
Answer» A ball is dropped onto a fixed horizontal surface from height h₀. The coefficient of restitution is e. Find the total distance D travelled by the ball before it comes to rest on the surface.

Discussion

14.	What is the time rate of change of momentum of an object of mass m (in gram), if its velocity changes by v (in m/s) in time 0.1 second? 1. (10) mv 2. (0.1 mv) N 3. (0.01 mv) N 4. (0.001 mv) N
Answer» What is the time rate of change of momentum of an object of mass m (in gram), if its velocity changes by v (in m/s) in time 0.1 second? 1. (10) mv 2. (0.1 mv) N 3. (0.01 mv) N 4. (0.001 mv) N

Discussion

15.	A particle starting from the origin (0,0) moves in a straight line in the (x,y) plane. Its coordinates at a later time are (√3,3). The path of the particle makes with the x-axis an angle of
Answer» A particle starting from the origin $(0, 0)$ moves in a straight line in the $(x, y)$ plane. Its coordinates at a later time are $(\sqrt{3}, 3)$ . The path of the particle makes with the x-axis an angle of

Discussion

16.	In an electromagnetic wave in free space, the root mean square value of the electric field is Erms=6 V/m. The peak value of the magnetic field is
Answer» In an electromagnetic wave in free space, the root mean square value of the electric field is $E_{r m s} = 6 V / m$ . The peak value of the magnetic field is

Discussion

17.	The magnetic moment vectors μs and μl associated with the intrinsicspin angular momentum S and orbital angular momentum l,respectively, of an electron are predicted by quantum theory (andverified experimentally to a high accuracy) to be given by:μs= –(e/m) S,μl = –(e/2m)lWhich of these relations is in accordance with the result expectedclassically? Outline the derivation of the classical result.
Answer» The magnetic moment vectors μs and μl associated with the intrinsicspin angular momentum S and orbital angular momentum l,respectively, of an electron are predicted by quantum theory (andverified experimentally to a high accuracy) to be given by:μs= –(e/m) S,μl = –(e/2m)lWhich of these relations is in accordance with the result expectedclassically? Outline the derivation of the classical result.

Discussion

18.	A charged particle of specific charge 1000 C/kg is projected from the origin of the x−y plane with velocity 2 ^i m/s at t=0. The plane has uniform magnetic field of 289√19 T and electric field of magnitude 10−3 N/C along the positive x− axis. Find the position of particle at t=2 s.
Answer» A charged particle of specific charge $1000 C/kg$ is projected from the origin of the $x - y$ plane with velocity $2^i m/s$ at $t = 0$ . The plane has uniform magnetic field of $289 \sqrt{19} T$ and electric field of magnitude $10^{- 3} N/C$ along the positive $x -$ axis. Find the position of particle at $t = 2 s$ .

Discussion

19.	Two stones are thrown up simultaneously with initial speeds of u1 and u2 (u2>u1). They hit the ground after 6 s and 10 s respectively. Which graph in figure correctly represents the time variation of Δx=(x2−x1), the relative position of the second stone with respect to the first upto t=10 s? Assume that the stones do not rebound after hitting the ground.
Answer» Two stones are thrown up simultaneously with initial speeds of $u_{1}$ and $u_{2} (u_{2} > u_{1})$ . They hit the ground after $6 s$ and $10 s$ respectively. Which graph in figure correctly represents the time variation of $Δ x = (x_{2} - x_{1})$ , the relative position of the second stone with respect to the first upto $t = 10 s$ ? Assume that the stones do not rebound after hitting the ground.

Discussion

20.	If a chain is lowered at a constant speed of v=1.2 m/s, determine the normal reaction exerted on the floor as a function of time. The chain has a mass of 80 kg and a total length of 6 m. [Take g=10 m/s2]
Answer» If a chain is lowered at a constant speed of $v = 1.2 m/s$ , determine the normal reaction exerted on the floor as a function of time. The chain has a mass of $80 kg$ and a total length of $6 m$ . [Take $g = 10 {m/s}^{2}$ ]

Discussion

21.	We do not choose to transmit and audio signal by Just Directly converting it to an em wave of the same frequency. give two reasons for the same
Answer» We do not choose to transmit and audio signal by Just Directly converting it to an em wave of the same frequency. give two reasons for the same

Discussion

22.	Question 19Soni says that the acceleration in an object could be zero even when several forces are acting on it. Do you agree with her? Why?
Answer» Question 19 Soni says that the acceleration in an object could be zero even when several forces are acting on it. Do you agree with her? Why?

Discussion

23.	On passing through a resistor, does the value of current change?
Answer» On passing through a resistor, does the value of current change?

Discussion

24.	A progressive wave travelling along the positive x direction is represented by y(x,t)=Asin(kx−ωt+ϕ). Its snapshot at t=0 is given in the figure.For this wave, the phase constant ϕ is :
Answer» A progressive wave travelling along the positive $x$ direction is represented by $y (x, t) = A sin (k x - ω t + ϕ)$ . Its snapshot at $t = 0$ is given in the figure. For this wave, the phase constant $ϕ$ is :

Discussion

25.	Figure 5.16 shows the position-time graph of a particle of mass 4 kg. What is the (a) force on the particle for t < 0, t > 4 s, 0 < t < 4 s? (b) impulse at t = 0 and t = 4 s ? (Consider one-dimensional motion only).
Answer» Figure 5.16 shows the position-time graph of a particle of mass 4 kg. What is the (a) force on the particle for t < 0, t > 4 s, 0 < t < 4 s? (b) impulse at t = 0 and t = 4 s ? (Consider one-dimensional motion only).

Discussion

26.	The following figure shows a network of currents, their magnitudes and directions. The current I will be equal to _____.
Answer» The following figure shows a network of currents, their magnitudes and directions. The current $I$ will be equal to _____.

26.

The following figure shows a network of currents, their magnitudes and directions. The current I will be equal to _____.

Answer»

The following figure shows a network of currents, their magnitudes and directions. The current $I$ will be equal to _____.

Discussion

27.	The filter to check for leads with specific device model
Answer» The filter to check for leads with specific device model

Discussion

28.	13. The length of a copper wire is 5 metre and its radius is 1 millimetre a force of 31.4 Newton is applied at each end of the wire.
Answer» 13. The length of a copper wire is 5 metre and its radius is 1 millimetre a force of 31.4 Newton is applied at each end of the wire.

Discussion

29.	20. a particle moves with velocity v and sticks to one end of a metal rod of length l fixed about its centre of mass.� what is the angular velocity with which the rod rotates?
Answer» 20. a particle moves with velocity v and sticks to one end of a metal rod of length l fixed about its centre of mass.� what is the angular velocity with which the rod rotates?

Discussion

30.	The number of significant figures in 1.217×10−4 is
Answer» The number of significant figures in $1.217 \times 10^{- 4}$ is

Discussion

31.	Critical load for the figure below is ? (E and G are stiffness of corresponding springs)
Answer» Critical load for the figure below is ? (E and G are stiffness of corresponding springs)

Discussion

32.	A wire of mass M and length L is hanging from point A. Find the increase in its length due to its own weight. The Young's modulus of elasticity of the wire is Y and area of cross-section of the wire is A.
Answer» A wire of mass $M$ and length $L$ is hanging from point $A$ . Find the increase in its length due to its own weight. The Young's modulus of elasticity of the wire is $Y$ and area of cross-section of the wire is $A$ .

Discussion

33.	A particle is moving on a straight line such that velocity is given by v= 6t + 3t² , where v is in m/s and t is in second. If at t=0, the particle is at origin then average velocity during t=0 to t=3 s is.
Answer» A particle is moving on a straight line such that velocity is given by v= 6t + 3t² , where v is in m/s and t is in second. If at t=0, the particle is at origin then average velocity during t=0 to t=3 s is.

Discussion

34.	equation y=\pm\sqrt3x and y=1 which triangle side
Answer» equation y=\pm\sqrt3x and y=1 which triangle side

Discussion

35.	A block of mass m is connected to another block of mass M by a massless spring of spring constant k. The blocks are kept on a smooth horizontal plane. Initially, the blocks are at rest and the spring is un-stretched when a constant force F starts acting on the block of mass M to pull it. Find the maximum extension of the spring?
Answer» A block of mass m is connected to another block of mass M by a massless spring of spring constant k. The blocks are kept on a smooth horizontal plane. Initially, the blocks are at rest and the spring is un-stretched when a constant force F starts acting on the block of mass M to pull it. Find the maximum extension of the spring?

35.

A block of mass m is connected to another block of mass M by a massless spring of spring constant k. The blocks are kept on a smooth horizontal plane. Initially, the blocks are at rest and the spring is un-stretched when a constant force F starts acting on the block of mass M to pull it. Find the maximum extension of the spring?

Answer»

A block of mass m is connected to another block of mass M by a massless spring of spring constant k. The blocks are kept on a smooth horizontal plane. Initially, the blocks are at rest and the spring is un-stretched when a constant force F starts acting on the block of mass M to pull it. Find the maximum extension of the spring?

Discussion

36.	The area of parallelogram whose adjacent sides are ^i+^k and 2^i+^j+^k is
Answer» The area of parallelogram whose adjacent sides are $^i +^k a n d 2^i +^j +^k$ is

Discussion

37.	If mass of earth is M, radius is R and gravitational constant is G, then work done to take 1 kg mass from earth surface to infinity will be
Answer» If mass of earth is M, radius is R and gravitational constant is G, then work done to take 1 kg mass from earth surface to infinity will be

Discussion

38.	7. The mean free path of a molecule of He gas is . Its mean free path along any arbitrary coordinate axis will be OC 2 3 (4) 3
Answer» 7. The mean free path of a molecule of He gas is . Its mean free path along any arbitrary coordinate axis will be OC 2 3 (4) 3

Discussion

39.	The power of a motor is 40 kW.At what speed can the motor raise a load of 20,000 N?
Answer» The power of a motor is 40 kW.At what speed can the motor raise a load of 20,000 N?

Discussion

40.	A single-phase, 50 Hz, 1200/120 V transformer gave the following results of open-circuit test with voltage 120 V, current 16 A, power input 400 W, then the magnetizing component of no-load current is ______A.15.65
Answer» A single-phase, 50 Hz, 1200/120 V transformer gave the following results of open-circuit test with voltage 120 V, current 16 A, power input 400 W, then the magnetizing component of no-load current is ______A. 15.65

Discussion

41.	Two thin parallel threads carry a uniform charge with linear densities λ and —λ. The distance between the threads is equal to l. Find the potential of the electric field and the magnitude of its strength vector at the distance r >> l at the angle θ to the vector l .
Answer» Two thin parallel threads carry a uniform charge with linear densities λ and —λ. The distance between the threads is equal to l. Find the potential of the electric field and the magnitude of its strength vector at the distance r >> l at the angle θ to the vector l .

Discussion

42.	There are two concentric hollow conducting spherical shells of radii r and R (R>r). The charge on the outer shell is Q. What charge should be given to the inner shell, so that the potential at a point P ,at a distance 2R from the common centre, is zero.
Answer» There are two concentric hollow conducting spherical shells of radii r and R (R>r). The charge on the outer shell is Q. What charge should be given to the inner shell, so that the potential at a point P ,at a distance 2R from the common centre, is zero.

Discussion

43.	the nineteenth electron of chromium has which of the following quantum numbers
Answer» the nineteenth electron of chromium has which of the following quantum numbers

Discussion

44.	A body rotates about fixed axis with an angular acceleration of 3 rad/s2. Through what angle does it rotate during the time in which its angular velocity increases from 15 rad/s to 45 rad/s ?
Answer» A body rotates about fixed axis with an angular acceleration of $3 {rad/s}^{2}$ . Through what angle does it rotate during the time in which its angular velocity increases from $15 rad/s$ to $45 rad/s$ ?

Discussion

45.	a region of space contains a constant electric field of magnitude 1325 N/C .A wire frame forming a square of 0.27m on a side is placed in this region.Oriented so that the perpendicular to the square makes an angle of 48 with the field. What is the magnitude of electric flux through the frame?
Answer» a region of space contains a constant electric field of magnitude 1325 N/C .A wire frame forming a square of 0.27m on a side is placed in this region.Oriented so that the perpendicular to the square makes an angle of 48 with the field. What is the magnitude of electric flux through the frame?

Discussion

46.	Answer the following questions based on the P-T phase diagram of carbon dioxide: (a) At what temperature and pressure can the solid, liquid and vapour phases of CO2 co-exist in equilibrium ? (b) What is the effect of decrease of pressure on the fusion and boiling point of CO2 ? (c) What are the critical temperature and pressure for CO2 ? What is their significance ? (d) Is CO2 solid, liquid or gas at (a) –70 °C under 1 atm, (b) –60 °C under 10 atm, (c) 15 °C under 56 atm ?
Answer» Answer the following questions based on the P-T phase diagram of carbon dioxide: (a) At what temperature and pressure can the solid, liquid and vapour phases of CO2 co-exist in equilibrium ? (b) What is the effect of decrease of pressure on the fusion and boiling point of CO2 ? (c) What are the critical temperature and pressure for CO2 ? What is their significance ? (d) Is CO2 solid, liquid or gas at (a) –70 °C under 1 atm, (b) –60 °C under 10 atm, (c) 15 °C under 56 atm ?

Discussion

47.	The count rate of a Geiger- Muller counter for the radiation of a radioactive material of half life of 30 minutes decreases to 5s−1 after 2 hours. The initial count rate was
Answer» The count rate of a Geiger- Muller counter for the radiation of a radioactive material of half life of 30 minutes decreases to $5 s^{- 1}$ after 2 hours. The initial count rate was

Discussion

48.	Gravitational potential in a region is given by V=−(x+y+z) J/kg. Find the gravitational field intensity at (2,2,2).
Answer» Gravitational potential in a region is given by $V = - (x + y + z) J/kg$ . Find the gravitational field intensity at $(2, 2, 2)$ .

Discussion

49.	Structure of alkyl plastic polymer.
Answer» Structure of alkyl plastic polymer.

Discussion

50.	the ratio of wavelength of electrons in the first and third orbit of hydrogen atom is
Answer» the ratio of wavelength of electrons in the first and third orbit of hydrogen atom is

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

In the given figure, All surface are smooth & g=10 m/s2. The force F required to keep 4 kg in equilibria is (Write upto two digits after the decimal point)

A block of mass 2 kg hangs from the rim of a wheel of radius 1 m. On releasing from rest the block falls through 5 m height in 2 s. The moment of inertia of the wheel will be

4.11 In a chamber, a uniform magnetic field of 6.5 G (1 G= 10 Tmaintained. An electron is shot into the fleld with a speed of4.8 x 10^° m s normal to the fleld. Explain why the path of thelectron is a circle. Determine the radius of the circular orbit.(e 1.6 x 109 C, m = 9. 1x10 kg)

what is the path of the charged particle moving in the magnetic field in a direction parallel to magnetic field?

in aregion of space suppose there exists a uniform electric fieldE=10i(V/m) if a positivr charge mmoves with a velocity v= -2j its potentialenerg

Three resistances 2Ω,3Ω and 4Ω are connected in parallel. The ratio of currents passing through them when a potential difference is applied across its ends will be:

A string of length l=1 m fixed at one end carries a mass m=1 kg at the other end. The string is rotating at a rate of 2π rev/s about the axis through the fixed end as shown in the figure. Then the tension in the string is

The molecules of a given mass of gas has r.m.s speed 400 m/s at 27∘ C and 105 N/m2 pressure . When the absolute temperature is doubled and the pressure is halved, the r.m.s. speed of the molecules of the same gas is

The equation of a particle executing SHM is x=(5m)sin[(π s−1)t+π3]. What is its amplitude, time period, maximum speed and velocity. At t = 1s?

Three liquids of densities d,2d and 3d are mixed in equal proportions of weights. What is the relative density of the mixture, if d is the density of water?

The figure below shows the scale of a voltmeter.The least count of this voltmeter is :(1) 1 V(2) 0.5 V(3) 5 V(4) 0.05 V

A ball is dropped onto a fixed horizontal surface from height h0. The coefficient of restitution is e. Find the total distance D travelled by the ball before it comes to rest on the surface.

What is the time rate of change of momentum of an object of mass m (in gram), if its velocity changes by v (in m/s) in time 0.1 second? 1. (10) mv 2. (0.1 mv) N 3. (0.01 mv) N 4. (0.001 mv) N

A particle starting from the origin (0,0) moves in a straight line in the (x,y) plane. Its coordinates at a later time are (√3,3). The path of the particle makes with the x-axis an angle of

In an electromagnetic wave in free space, the root mean square value of the electric field is Erms=6 V/m. The peak value of the magnetic field is

A charged particle of specific charge 1000 C/kg is projected from the origin of the x−y plane with velocity 2 ^i m/s at t=0. The plane has uniform magnetic field of 289√19 T and electric field of magnitude 10−3 N/C along the positive x− axis. Find the position of particle at t=2 s.

If a chain is lowered at a constant speed of v=1.2 m/s, determine the normal reaction exerted on the floor as a function of time. The chain has a mass of 80 kg and a total length of 6 m. [Take g=10 m/s2]

We do not choose to transmit and audio signal by Just Directly converting it to an em wave of the same frequency. give two reasons for the same

Question 19Soni says that the acceleration in an object could be zero even when several forces are acting on it. Do you agree with her? Why?

On passing through a resistor, does the value of current change?

A progressive wave travelling along the positive x direction is represented by y(x,t)=Asin(kx−ωt+ϕ). Its snapshot at t=0 is given in the figure.For this wave, the phase constant ϕ is :

Figure 5.16 shows the position-time graph of a particle of mass 4 kg. What is the (a) force on the particle for t < 0, t > 4 s, 0 < t < 4 s? (b) impulse at t = 0 and t = 4 s ? (Consider one-dimensional motion only).

The following figure shows a network of currents, their magnitudes and directions. The current I will be equal to _____.

The filter to check for leads with specific device model

13. The length of a copper wire is 5 metre and its radius is 1 millimetre a force of 31.4 Newton is applied at each end of the wire.

20. a particle moves with velocity v and sticks to one end of a metal rod of length l fixed about its centre of mass.� what is the angular velocity with which the rod rotates?

The number of significant figures in 1.217×10−4 is

Critical load for the figure below is ? (E and G are stiffness of corresponding springs)

A wire of mass M and length L is hanging from point A. Find the increase in its length due to its own weight. The Young's modulus of elasticity of the wire is Y and area of cross-section of the wire is A.

A particle is moving on a straight line such that velocity is given by v= 6t + 3t² , where v is in m/s and t is in second. If at t=0, the particle is at origin then average velocity during t=0 to t=3 s is.

equation y=\pm\sqrt3x and y=1 which triangle side

The area of parallelogram whose adjacent sides are ^i+^k and 2^i+^j+^k is

If mass of earth is M, radius is R and gravitational constant is G, then work done to take 1 kg mass from earth surface to infinity will be

7. The mean free path of a molecule of He gas is . Its mean free path along any arbitrary coordinate axis will be OC 2 3 (4) 3

The power of a motor is 40 kW.At what speed can the motor raise a load of 20,000 N?

A single-phase, 50 Hz, 1200/120 V transformer gave the following results of open-circuit test with voltage 120 V, current 16 A, power input 400 W, then the magnetizing component of no-load current is ______A.15.65

Two thin parallel threads carry a uniform charge with linear densities λ and —λ. The distance between the threads is equal to l. Find the potential of the electric field and the magnitude of its strength vector at the distance r >> l at the angle θ to the vector l .

There are two concentric hollow conducting spherical shells of radii r and R (R>r). The charge on the outer shell is Q. What charge should be given to the inner shell, so that the potential at a point P ,at a distance 2R from the common centre, is zero.

the nineteenth electron of chromium has which of the following quantum numbers

A body rotates about fixed axis with an angular acceleration of 3 rad/s2. Through what angle does it rotate during the time in which its angular velocity increases from 15 rad/s to 45 rad/s ?

a region of space contains a constant electric field of magnitude 1325 N/C .A wire frame forming a square of 0.27m on a side is placed in this region.Oriented so that the perpendicular to the square makes an angle of 48 with the field. What is the magnitude of electric flux through the frame?

The count rate of a Geiger- Muller counter for the radiation of a radioactive material of half life of 30 minutes decreases to 5s−1 after 2 hours. The initial count rate was

Gravitational potential in a region is given by V=−(x+y+z) J/kg. Find the gravitational field intensity at (2,2,2).

Structure of alkyl plastic polymer.

the ratio of wavelength of electrons in the first and third orbit of hydrogen atom is