50278 + Interview Questions in Physics

1.	Potential in the x-y plane is given as V=5(x2+xy) volts. The electric field at the point (1,−2) will be
Answer» Potential in the x-y plane is given as $V = 5 (x^{2} + x y)$ volts. The electric field at the point $(1, - 2)$ will be

Discussion

2.	Figure (35-E6) shows a square loop of edge a made of a uniform wire.A current i enters the loop at the point A and leaves it at the point C.Find the magnetic field at the point P which is on the perpendicular bisector of AB at a distance a/4 from it.
Answer» Figure (35-E6) shows a square loop of edge a made of a uniform wire.A current i enters the loop at the point A and leaves it at the point C.Find the magnetic field at the point P which is on the perpendicular bisector of AB at a distance a/4 from it.

2.

Figure (35-E6) shows a square loop of edge a made of a uniform wire.A current i enters the loop at the point A and leaves it at the point C.Find the magnetic field at the point P which is on the perpendicular bisector of AB at a distance a/4 from it.

Answer»

Figure (35-E6) shows a square loop of edge a made of a uniform wire.A current i enters the loop at the point A and leaves it at the point C.Find the magnetic field at the point P which is on the perpendicular bisector of AB at a distance a/4 from it.

Discussion

3.	A ball is moving with velocity 10 m/s in downward direction as shown in figure. After collision with fixed surface having coefficient of restitution e=0.5, it rebounds back with velocity v m/s. Find the value of v. (Neglect all external forces)
Answer» A ball is moving with velocity $10 m / s$ in downward direction as shown in figure. After collision with fixed surface having coefficient of restitution $e = 0.5$ , it rebounds back with velocity $v m/s$ . Find the value of $v$ . (Neglect all external forces)

Discussion

4.	among which of the following has the maximum radius cr^{+2},cr^{+3},cr^{+4},cr^{+6
Answer» among which of the following has the maximum radius cr^{+2},cr^{+3},cr^{+4},cr^{+6

Discussion

5.	Two masses m1=5 kg, m2=10 kg connected by an inextensible massless string over a frictionless pulley, are released from rest as shown in the figure. The coefficient of static friction between the horizontal surface and block m2 is 0.15. The minimum mass m in kg that should be put on top of m2 to stop the motion is:
Answer» Two masses $m_{1} = 5 kg, m_{2} = 10 kg$ connected by an inextensible massless string over a frictionless pulley, are released from rest as shown in the figure. The coefficient of static friction between the horizontal surface and block $m_{2}$ is $0.15$ . The minimum mass $m$ in $kg$ that should be put on top of $m_{2}$ to stop the motion is:

Discussion

6.	Find Magnetic moment of the loop →M
Answer» Find Magnetic moment of the loop $\to M$

Discussion

7.	The χ vs 1T graph for an alloy of paramagnetic nature is shown in fig. The curie constant is,
Answer» The $χ$ vs $\frac{1}{T}$ graph for an alloy of paramagnetic nature is shown in fig. The curie constant is,

Discussion

8.	A compressive force is applied to a uniform rod of rectangular cross-section so that its length decreases by 1%. If the Poisson's ratio for the material of the rod is 0.2, then the volume approximately decreases by (in percentage).
Answer» A compressive force is applied to a uniform rod of rectangular cross-section so that its length decreases by 1%. If the Poisson's ratio for the material of the rod is $0.2$ , then the volume approximately decreases by (in percentage).

Discussion

9.	A 5 metre long wire is fixed to the ceiling. A weight of 10 kg is hung at the lower end and is 1 metre above the floor. The wire was elongated by 1 mm. The energy stored in the wire due to stretching is
Answer» A 5 metre long wire is fixed to the ceiling. A weight of 10 kg is hung at the lower end and is 1 metre above the floor. The wire was elongated by 1 mm. The energy stored in the wire due to stretching is

Discussion

10.	what happens to the force of 2 objects if the dis†an ce is doubled
Answer» what happens to the force of 2 objects if the dis†an ce is doubled

Discussion

11.	A part of a complete circuit is shown in the figure. At some instant, the value of current I is 1 A and it is decreasing at a rate of 102 As−1. The value of the potential difference (VP−VQ) ( in volts ) at that instant, is
Answer» A part of a complete circuit is shown in the figure. At some instant, the value of current I is $1 A$ and it is decreasing at a rate of $10^{2} {As}^{- 1}$ . The value of the potential difference $(V_{P} - V_{Q})$ ( in volts ) at that instant, is

Discussion

12.	area under v-t graph gives us dis†an ce and displacement what does it mean ?
Answer» area under v-t graph gives us dis†an ce and displacement what does it mean ?

Discussion

13.	109.What is the relationship between momentum and force
Answer» 109.What is the relationship between momentum and force

Discussion

14.	Neglecting friction and considering pulleys and strings to be massless, if a1,a2,a3 are acceleration of blocks and T is tension in the string as shown. Choose correct options(s).
Answer» Neglecting friction and considering pulleys and strings to be massless, if $a_{1}, a_{2}, a_{3}$ are acceleration of blocks and $T$ is tension in the string as shown. Choose correct options(s).

Discussion

15.	when a load of 10 kg is hung from the wire, then te extension of 2m is produced, work done i
Answer» when a load of 10 kg is hung from the wire, then te extension of 2m is produced, work done i

Discussion

16.	a parallel plate capacitor is charged by battery and then isolated from it if distance between two plates is now increased ,then
Answer» a parallel plate capacitor is charged by battery and then isolated from it if distance between two plates is now increased ,then

Discussion

17.	three point charges q, -2q and -2q are placed at the vertices of an equilateral triangle of side a. Find the work done by external forces to increase their separation to 2a
Answer» three point charges q, -2q and -2q are placed at the vertices of an equilateral triangle of side a. Find the work done by external forces to increase their separation to 2a

Discussion

18.	Both the blocks as shown in the given arrangement are given together a horizontal velocity towards right. If acm is the subsequent acceleration of the centre of mass of the system of blocks, then acm equals [Take g=10 m/s2]
Answer» Both the blocks as shown in the given arrangement are given together a horizontal velocity towards right. If $a_{c m}$ is the subsequent acceleration of the centre of mass of the system of blocks, then $a_{c m}$ equals [Take $g = 10 {m/s}^{2}$ ]

Discussion

19.	For a small temperature difference between the body and the surroundings, the relation between the rate of heat loss R and the temperature of the body is depicted by
Answer» For a small temperature difference between the body and the surroundings, the relation between the rate of heat loss $R$ and the temperature of the body is depicted by

Discussion

20.	When a beam of light goes from a denser medium (μd) to a rarer medium (μr), then it is observed that magnitude of angle of incidence is half of the angle of refraction. Then magnitude of incident angle will be: Here, μ=μdμr
Answer» When a beam of light goes from a denser medium $(μ_{d})$ to a rarer medium $(μ_{r})$ , then it is observed that magnitude of angle of incidence is half of the angle of refraction. Then magnitude of incident angle will be: Here, $μ = \frac{μ_{d}}{μ_{r}}$

Discussion

21.	At a certain time, a radioactive sample contains 2×1020 atoms and its disintegration rate is 3×1010 atoms/sec. When 2×1015 atoms are left to decay, its disintegration rate will be (atoms/sec)
Answer» At a certain time, a radioactive sample contains $2 \times 10^{20} atoms$ and its disintegration rate is $3 \times 10^{10} atoms/sec$ . When $2 \times 10^{15}$ atoms are left to decay, its disintegration rate will be ( $atoms/sec)$

Discussion

22.	In free space, a particle A of charge 1 μC is held fixed at a point P. Another particle B of the same charge and mass 4 μg is kept at a distance of 1 mm from P. If B is released, then its velcoity at a diatnce of 9 mm from P is [Take 14πε0=9×109 Nm2C−2]
Answer» In free space, a particle $A$ of charge $1 μ C$ is held fixed at a point $P$ . Another particle $B$ of the same charge and mass $4 μ g$ is kept at a distance of $1 mm$ from $P$ . If $B$ is released, then its velcoity at a diatnce of $9 mm from P$ is $[Take \frac{1}{4 π ε_{0}} = 9 \times 10^{9} {Nm}^{2} C^{- 2}]$

Discussion

23.	A cuboidal body of dimensions 2 m × 3 m × 4 m is acted upon by a perpendicular force of 50 N on the top surface (2 m × 3 m) as shown in the figure. Calculate the pressure due to the force on that surface.
Answer» A cuboidal body of dimensions 2 m $\times$ 3 m $\times$ 4 m is acted upon by a perpendicular force of 50 N on the top surface (2 m $\times$ 3 m) as shown in the figure. Calculate the pressure due to the force on that surface.

Discussion

24.	In the figure shown, 6 kg body is at a distance of 16 m from the support at t=0. The string is cut at t=1 s after the system is released from rest. Find the time (in sec) after which the 6 kg block will hit the support. Take g=10 ms2.
Answer» In the figure shown, $6 k g$ body is at a distance of $16 m$ from the support at $t = 0$ . The string is cut at $t = 1 s$ after the system is released from rest. Find the time $(in sec)$ after which the $6 k g$ block will hit the support. Take $g = 10 \frac{m}{s^{2}} .$

Discussion

25.	In an elastic collision of two particles the following quantity is conserved A.)momentum of each particle. B.) Speed of each particle C.) kinetic energy of each particle D.) total kinetic energy of both the particles
Answer» In an elastic collision of two particles the following quantity is conserved A.)momentum of each particle. B.) Speed of each particle C.) kinetic energy of each particle D.) total kinetic energy of both the particles

25.

In an elastic collision of two particles the following quantity is conserved A.)momentum of each particle. B.) Speed of each particle C.) kinetic energy of each particle D.) total kinetic energy of both the particles

Answer»

In an elastic collision of two particles the following quantity is conserved

A.)momentum of each particle. B.) Speed of each particle

C.) kinetic energy of each particle

D.) total kinetic energy of both the particles

Discussion

26.	A particle executes simple harmonic motion along a straight line with time period 12 sec. In what time the particle will cover half of the maximum displacement from the mean position?
Answer» A particle executes simple harmonic motion along a straight line with time period 12 sec. In what time the particle will cover half of the maximum displacement from the mean position?

Discussion

27.	A gear train shown in the figure consists of gears P, Q, R, and S. Gear Q and gear R are mounted on the same shaft. All the gears are mounted on parallel shafts and the number of teeth of P, Q, R and S are 24, 25, 30 and 80 respectively. Gear P is rotating at 400 rpm. The speed (in rpm). The speed(in rpm) of the gear S is
Answer» A gear train shown in the figure consists of gears P, Q, R, and S. Gear Q and gear R are mounted on the same shaft. All the gears are mounted on parallel shafts and the number of teeth of P, Q, R and S are 24, 25, 30 and 80 respectively. Gear P is rotating at 400 rpm. The speed (in rpm). The speed(in rpm) of the gear S is

Discussion

28.	Explain this common observation clearly : If you look out of the window of a fast moving train, the nearby trees, houses etc. seem to move rapidly in a direction opposite to the train’s motion, but the distant objects (hill tops, the Moon, the stars etc.) seem to be stationary. (In fact, since you are aware that you are moving, these distant objects seem to move with you).
Answer» Explain this common observation clearly : If you look out of the window of a fast moving train, the nearby trees, houses etc. seem to move rapidly in a direction opposite to the train’s motion, but the distant objects (hill tops, the Moon, the stars etc.) seem to be stationary. (In fact, since you are aware that you are moving, these distant objects seem to move with you).

Discussion

29.	Briefly explain the weak nuclear force and about the beta decay and anti-nutrino.
Answer» Briefly explain the weak nuclear force and about the beta decay and anti-nutrino.

Discussion

30.	Ultraviolet light of wavelength 300 nm and intensity 1 W m−2 falls on the surface of a photosensitive material. If one percent of the incident photons produce photoelectrons then the number of photoelectrons emitted per second from an area of 1 cm2 of the surface is nearly. [Take hc=1240 eV (nm)]
Answer» Ultraviolet light of wavelength $300 nm$ and intensity $1 {W m}^{- 2}$ falls on the surface of a photosensitive material. If one percent of the incident photons produce photoelectrons then the number of photoelectrons emitted per second from an area of $1 {cm}^{2}$ of the surface is nearly. [Take $h c = 1240 eV (nm)$ ]

Discussion

31.	ntThe phase difference between current and voltage, when the freqeuency of applied emf is w + R/2L (w is resonance frequency) in a series LCR circuit isn nt(a) pi/2 (b) pi/4 (c)pi/6 (d)0n
Answer» ntThe phase difference between current and voltage, when the freqeuency of applied emf is w + R/2L (w is resonance frequency) in a series LCR circuit isn nt(a) pi/2 (b) pi/4 (c)pi/6 (d)0n

Discussion

32.	Electric potential in a region is varying according to the relation V=3x22−y24 , where x and y are in meter and V is in volt. Electric field intensity in N/C at a point (1 m, 2 m) is
Answer» Electric potential in a region is varying according to the relation $V = \frac{3 x^{2}}{2} - \frac{y^{2}}{4}$ , where $x$ and $y$ are in $meter$ and $V$ is in $volt$ . Electric field intensity in $N/C$ at a point $(1 m, 2 m)$ is

Discussion

33.	A ball of mass m hits a floor with a speed vmaking an angle a with the normal N. Thecoefficient of restitution is e. The angle made byreflected ball with floor isNV(1) cot (ecota)(2) tan (ecota)e(4) Cot1tan o(3) tan 1/ tan
Answer» A ball of mass m hits a floor with a speed v making an angle a with the normal N. The coefficient of restitution is e. The angle made by reflected ball with floor is N V (1) cot (ecota) (2) tan (ecota) e (4) Cot1 tan o (3) tan 1/ tan

Discussion

34.	The Heights of mercury surface in the two arms of the manometer shown are 2 cm and 8 cm. find the pressure of the gas in the cylinder? Patm = 105 N/m2
Answer» The Heights of mercury surface in the two arms of the manometer shown are 2 cm and 8 cm. find the pressure of the gas in the cylinder? P_atm = 10⁵N/m²

34.

The Heights of mercury surface in the two arms of the manometer shown are 2 cm and 8 cm. find the pressure of the gas in the cylinder? Patm = 105 N/m2

Answer»

The Heights of mercury surface in the two arms of the manometer shown are 2 cm and 8 cm. find the pressure of the gas in the cylinder? P_atm = 10⁵N/m²

Discussion

35.	what is looping the loop concept?
Answer» what is looping the loop concept?

Discussion

36.	A: Power of the gravitational force on the body ina projectile motion is zero, once during itsmotion.R At the highest point only, the component ofvelocity along the gravitational force is zero.
Answer» A: Power of the gravitational force on the body ina projectile motion is zero, once during itsmotion.R At the highest point only, the component ofvelocity along the gravitational force is zero.

Discussion

37.	Whcih of the following phenomena gives evidence of the molecular structure of matter?
Answer» Whcih of the following phenomena gives evidence of the molecular structure of matter?

Discussion

38.	Assertion :A particle in x-y plane is related by x=a sin(wt) and y=a (1-cos wt),where a and w are constants then the particle has parabolic motion.Reason:A particle under the influence of two perpendicular velocities has parabolic velocity.
Answer» Assertion :A particle in x-y plane is related by x=a sin(wt) and y=a (1-cos wt),where a and w are constants then the particle has parabolic motion. Reason:A particle under the influence of two perpendicular velocities has parabolic velocity.

Discussion

39.	If an object is vibrating at 10 hertz, what is its time period?
Answer» If an object is vibrating at 10 hertz, what is its time period?

Discussion

40.	A 3000 kg cannon recoils with a velocity of 1 m s−1, when a 15 kg cannon ball is fired from it. If the ball is aimed a target 400 m away, calculate the force (in N) that the ball exerts on the target, when it hits it.750
Answer» A $3000 kg$ cannon recoils with a velocity of $1 {m s}^{- 1}$ , when a $15 kg$ cannon ball is fired from it. If the ball is aimed a target $400 m$ away, calculate the force (in $N$ ) that the ball exerts on the target, when it hits it. 750

Discussion

41.	A ray of light suffers a minnimum deviation when incident on an equilateral prism of refractive index \sqrt{2 ?.the angle of incedence is}
Answer» A ray of light suffers a minnimum deviation when incident on an equilateral prism of refractive index \sqrt{2 ?.the angle of incedence is}

Discussion

42.	An ice cube kept on a inclined plane of angle 30 degree. Coefficient of kinetic friction between the block and the plane is 1/√3.What is the acceleration of the block?
Answer» An ice cube kept on a inclined plane of angle 30 degree. Coefficient of kinetic friction between the block and the plane is 1/√3.What is the acceleration of the block?

Discussion

43.	a particle of mass 'm' in a unidirectional potentil field have potential energy U(x)=α+2β x^2 where α andβ are positive cons†an t.find its time period of oscilltion
Answer» a particle of mass 'm' in a unidirectional potentil field have potential energy U(x)=α+2β x^2 where α andβ are positive cons†an t.find its time period of oscilltion

Discussion

44.	Water is flowing in streamline motion in the tube as shown in the figure. Pressure in the tube is
Answer» Water is flowing in streamline motion in the tube as shown in the figure. Pressure in the tube is

44.

Water is flowing in streamline motion in the tube as shown in the figure. Pressure in the tube is

Answer»

Water is flowing in streamline motion in the tube as shown in the figure. Pressure in the tube is

Discussion

45.	when a resistance of 20ohm connected parellel with galvano meter then its deflection reduces from 50 divisions to 10 divisions then resistence of galvano meter
Answer» when a resistance of 20ohm connected parellel with galvano meter then its deflection reduces from 50 divisions to 10 divisions then resistence of galvano meter

Discussion

46.	71. A 100 microfarad capacitor is connected across 220 V, 50 hz power supply. What is the displacement current throughthe capacitor? 1)3 A 2)5 A 3)7 A 4)9 A
Answer» 71. A 100 microfarad capacitor is connected across 220 V, 50 hz power supply. What is the displacement current throughthe capacitor? 1)3 A 2)5 A 3)7 A 4)9 A

Discussion

47.	24. Why caustic curves are formed in spherical aberration in spherical mirrors?
Answer» 24. Why caustic curves are formed in spherical aberration in spherical mirrors?

Discussion

48.	An piece of marble is projected from earths surface with v of 19.6√2 m/s at 45°.2s later its v makes a angle alpha with horizontal , where alpha is ?
Answer» An piece of marble is projected from earths surface with v of 19.6√2 m/s at 45°.2s later its v makes a angle alpha with horizontal , where alpha is ?

Discussion

49.	ntthe displacement at any point are y1=5sinwt and y2=3coswt respectively by a light source the two waves aren nt1 incoherentn nt2 coherentn
Answer» ntthe displacement at any point are y1=5sinwt and y2=3coswt respectively by a light source the two waves aren nt1 incoherentn nt2 coherentn

Discussion

50.	A body of mass 0.5 kg is projected under gravity with a speed of 98 m/s at an angle of 30∘ with the horizontal. The change in momentum (in magnitude) of the body is
Answer» A body of mass 0.5 kg is projected under gravity with a speed of 98 m/s at an angle of $30^{\circ}$ with the horizontal. The change in momentum (in magnitude) of the body is

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Potential in the x-y plane is given as V=5(x2+xy) volts. The electric field at the point (1,−2) will be

Figure (35-E6) shows a square loop of edge a made of a uniform wire.A current i enters the loop at the point A and leaves it at the point C.Find the magnetic field at the point P which is on the perpendicular bisector of AB at a distance a/4 from it.

A ball is moving with velocity 10 m/s in downward direction as shown in figure. After collision with fixed surface having coefficient of restitution e=0.5, it rebounds back with velocity v m/s. Find the value of v. (Neglect all external forces)

among which of the following has the maximum radius cr^{+2},cr^{+3},cr^{+4},cr^{+6

Find Magnetic moment of the loop →M

The χ vs 1T graph for an alloy of paramagnetic nature is shown in fig. The curie constant is,

A compressive force is applied to a uniform rod of rectangular cross-section so that its length decreases by 1%. If the Poisson's ratio for the material of the rod is 0.2, then the volume approximately decreases by (in percentage).

A 5 metre long wire is fixed to the ceiling. A weight of 10 kg is hung at the lower end and is 1 metre above the floor. The wire was elongated by 1 mm. The energy stored in the wire due to stretching is

what happens to the force of 2 objects if the dis†an ce is doubled

A part of a complete circuit is shown in the figure. At some instant, the value of current I is 1 A and it is decreasing at a rate of 102 As−1. The value of the potential difference (VP−VQ) ( in volts ) at that instant, is

area under v-t graph gives us dis†an ce and displacement what does it mean ?

109.What is the relationship between momentum and force

Neglecting friction and considering pulleys and strings to be massless, if a1,a2,a3 are acceleration of blocks and T is tension in the string as shown. Choose correct options(s).

when a load of 10 kg is hung from the wire, then te extension of 2m is produced, work done i

a parallel plate capacitor is charged by battery and then isolated from it if distance between two plates is now increased ,then

three point charges q, -2q and -2q are placed at the vertices of an equilateral triangle of side a. Find the work done by external forces to increase their separation to 2a

Both the blocks as shown in the given arrangement are given together a horizontal velocity towards right. If acm is the subsequent acceleration of the centre of mass of the system of blocks, then acm equals [Take g=10 m/s2]

For a small temperature difference between the body and the surroundings, the relation between the rate of heat loss R and the temperature of the body is depicted by

When a beam of light goes from a denser medium (μd) to a rarer medium (μr), then it is observed that magnitude of angle of incidence is half of the angle of refraction. Then magnitude of incident angle will be: Here, μ=μdμr

At a certain time, a radioactive sample contains 2×1020 atoms and its disintegration rate is 3×1010 atoms/sec. When 2×1015 atoms are left to decay, its disintegration rate will be (atoms/sec)

In free space, a particle A of charge 1 μC is held fixed at a point P. Another particle B of the same charge and mass 4 μg is kept at a distance of 1 mm from P. If B is released, then its velcoity at a diatnce of 9 mm from P is [Take 14πε0=9×109 Nm2C−2]

A cuboidal body of dimensions 2 m × 3 m × 4 m is acted upon by a perpendicular force of 50 N on the top surface (2 m × 3 m) as shown in the figure. Calculate the pressure due to the force on that surface.

In the figure shown, 6 kg body is at a distance of 16 m from the support at t=0. The string is cut at t=1 s after the system is released from rest. Find the time (in sec) after which the 6 kg block will hit the support. Take g=10 ms2.

In an elastic collision of two particles the following quantity is conserved A.)momentum of each particle. B.) Speed of each particle C.) kinetic energy of each particle D.) total kinetic energy of both the particles

A particle executes simple harmonic motion along a straight line with time period 12 sec. In what time the particle will cover half of the maximum displacement from the mean position?

Briefly explain the weak nuclear force and about the beta decay and anti-nutrino.

Ultraviolet light of wavelength 300 nm and intensity 1 W m−2 falls on the surface of a photosensitive material. If one percent of the incident photons produce photoelectrons then the number of photoelectrons emitted per second from an area of 1 cm2 of the surface is nearly. [Take hc=1240 eV (nm)]

ntThe phase difference between current and voltage, when the freqeuency of applied emf is w + R/2L (w is resonance frequency) in a series LCR circuit isn nt(a) pi/2 (b) pi/4 (c)pi/6 (d)0n

Electric potential in a region is varying according to the relation V=3x22−y24 , where x and y are in meter and V is in volt. Electric field intensity in N/C at a point (1 m, 2 m) is

A ball of mass m hits a floor with a speed vmaking an angle a with the normal N. Thecoefficient of restitution is e. The angle made byreflected ball with floor isNV(1) cot (ecota)(2) tan (ecota)e(4) Cot1tan o(3) tan 1/ tan

The Heights of mercury surface in the two arms of the manometer shown are 2 cm and 8 cm. find the pressure of the gas in the cylinder? Patm = 105 N/m2

what is looping the loop concept?

A: Power of the gravitational force on the body ina projectile motion is zero, once during itsmotion.R At the highest point only, the component ofvelocity along the gravitational force is zero.

Whcih of the following phenomena gives evidence of the molecular structure of matter?

Assertion :A particle in x-y plane is related by x=a sin(wt) and y=a (1-cos wt),where a and w are constants then the particle has parabolic motion.Reason:A particle under the influence of two perpendicular velocities has parabolic velocity.

If an object is vibrating at 10 hertz, what is its time period?

A 3000 kg cannon recoils with a velocity of 1 m s−1, when a 15 kg cannon ball is fired from it. If the ball is aimed a target 400 m away, calculate the force (in N) that the ball exerts on the target, when it hits it.750

A ray of light suffers a minnimum deviation when incident on an equilateral prism of refractive index \sqrt{2 ?.the angle of incedence is}

An ice cube kept on a inclined plane of angle 30 degree. Coefficient of kinetic friction between the block and the plane is 1/√3.What is the acceleration of the block?

a particle of mass 'm' in a unidirectional potentil field have potential energy U(x)=α+2β x^2 where α andβ are positive cons†an t.find its time period of oscilltion

Water is flowing in streamline motion in the tube as shown in the figure. Pressure in the tube is

when a resistance of 20ohm connected parellel with galvano meter then its deflection reduces from 50 divisions to 10 divisions then resistence of galvano meter

71. A 100 microfarad capacitor is connected across 220 V, 50 hz power supply. What is the displacement current throughthe capacitor? 1)3 A 2)5 A 3)7 A 4)9 A

24. Why caustic curves are formed in spherical aberration in spherical mirrors?

An piece of marble is projected from earths surface with v of 19.6√2 m/s at 45°.2s later its v makes a angle alpha with horizontal , where alpha is ?

ntthe displacement at any point are y1=5sinwt and y2=3coswt respectively by a light source the two waves aren nt1 incoherentn nt2 coherentn

A body of mass 0.5 kg is projected under gravity with a speed of 98 m/s at an angle of 30∘ with the horizontal. The change in momentum (in magnitude) of the body is