50278 + Interview Questions in Physics

1.	a ball is thrown from a point O aiming a target at angle 30 degree with horizontal so that the ball hits the target at B but ball hits at A a vertical dis†an ce h below if initial velocity is 20 metre per second and dis†an ce Oc is 10m find
Answer» a ball is thrown from a point O aiming a target at angle 30 degree with horizontal so that the ball hits the target at B but ball hits at A a vertical dis†an ce h below if initial velocity is 20 metre per second and dis†an ce Oc is 10m find

Discussion

2.	Two inductors of inductance 2 mH and 5 mH are connected in parallel and a time varying current i flows as shown in the figure. The ratio of currents i1 and i2 at any time t is-
Answer» Two inductors of inductance $2 mH$ and $5 mH$ are connected in parallel and a time varying current $i$ flows as shown in the figure. The ratio of currents $i_{1}$ and $i_{2}$ at any time $t$ is-

Discussion

3.	A uniform rod AB of mass m is hinged to the wall at it's lower end while it's upper end is held by a rope attached to the wall. For what value of theta the tension in the rope is mg/2?(Given: the rod makes 60^° with the wall) and theta is the angle that rope makes with the wall
Answer» A uniform rod AB of mass m is hinged to the wall at it's lower end while it's upper end is held by a rope attached to the wall. For what value of theta the tension in the rope is mg/2?(Given: the rod makes 60^° with the wall) and theta is the angle that rope makes with the wall

Discussion

4.	the displacement of a body is given by s=1/2(gt^2) , where g is acceleration due to gravity. The velocity of the body at any time t is Options: a) gt^3/6 b) gt^2/2 c) gt d) gt/2
Answer» the displacement of a body is given by s=1/2(gt^2) , where g is acceleration due to gravity. The velocity of the body at any time t is Options: a) gt^3/6 b) gt^2/2 c) gt d) gt/2

Discussion

5.	Two waves of light in air have the same wavelength and are initially in the same phase. They then travel through plastic layers with thicknesses of L1=3.5 mm and L2=5.0 mm and indices of refraction n1=1.7 and n2=1.25 as shown in the figure. The rays later arrive at a common point. The longest wavelength of light for which constructive interference occurs at the point is
Answer» Two waves of light in air have the same wavelength and are initially in the same phase. They then travel through plastic layers with thicknesses of $L_{1} = 3.5 mm$ and $L_{2} = 5.0 mm$ and indices of refraction $n_{1} = 1.7$ and $n_{2} = 1.25$ as shown in the figure. The rays later arrive at a common point. The longest wavelength of light for which constructive interference occurs at the point is

Discussion

6.	Maximum sound pressure tolerable by the human ear is 30 N/m2. For a sound of frequency 103 Hz and speed 300 m/s, the maximum displacement of particles of the medium is [density of air =1.5 kg/m3)]
Answer» Maximum sound pressure tolerable by the human ear is $30 {N/m}^{2}$ . For a sound of frequency $10^{3} Hz$ and speed $300 m/s$ , the maximum displacement of particles of the medium is [density of air $= 1.5 {kg/m}^{3})$ ]

Discussion

7.	A particle moves in a circle of radius 20cm with a linear speed of 10 m/s. Find the angular velocity, in rad/sec is___
Answer» A particle moves in a circle of radius 20cm with a linear speed of 10 m/s. Find the angular velocity, in rad/sec is ___

Discussion

8.	The speed of block B in a pulley-block system as shown in figure is
Answer» The speed of block $B$ in a pulley-block system as shown in figure is

Discussion

9.	One end of a copper rod of length 1 m and area of cross section 4.0×10−4m2 is maintained at 100∘C. At the other end of the rod ice is kept at 0∘C. Neglecting the loss of heat to the surroundings, find the mass (in gm) of ice melted in 1 hour.Given KCu=401 W/m - K and Lf=3.35×105 J/kg.
Answer» One end of a copper rod of length $1 m$ and area of cross section $4.0 \times 10^{- 4} m^{2}$ is maintained at $100^{\circ} C$ . At the other end of the rod ice is kept at $0^{\circ} C$ . Neglecting the loss of heat to the surroundings, find the mass (in $gm$ ) of ice melted in $1$ hour. Given $K_{C u} = 401 W/m - K$ and $L_{f} = 3.35 \times 10^{5} J/kg$ .

Discussion

10.	Average velocity of a particle moving in a straight line ,with constant accleration & initial velocity u in first t sec is: A) u+ at/2 B)u+at C)u+at/2 D)u/2
Answer» Average velocity of a particle moving in a straight line ,with constant accleration & initial velocity u in first t sec is: A) u+ at/2 B)u+at C)u+at/2 D)u/2

Discussion

11.	44. Two stones having masses in the ratio of 3:2are dropped from the heights in the ratio of 4:9.the ratio of magnitude of their linear momenta just before reaching the ground is??
Answer» 44. Two stones having masses in the ratio of 3:2are dropped from the heights in the ratio of 4:9.the ratio of magnitude of their linear momenta just before reaching the ground is??

Discussion

12.	Which of the following is the correct relation for the second principal focal length of a single spherical surface?
Answer» Which of the following is the correct relation for the second principal focal length of a single spherical surface?

Discussion

13.	A solid sphere of uniform density and radius R applies a gravitational force of attraction equal to F1 on a particle placed at a distance 3R from the centre of the sphere. A spherical cavity of radius R2 is now made in the sphere as shown in the figure. The sphere with cavity now applies a gravitational force F2 on the same particle. The ratio F2F1 is:
Answer» A solid sphere of uniform density and radius $R$ applies a gravitational force of attraction equal to $F_{1}$ on a particle placed at a distance $3 R$ from the centre of the sphere. A spherical cavity of radius $\frac{R}{2}$ is now made in the sphere as shown in the figure. The sphere with cavity now applies a gravitational force $F_{2}$ on the same particle. The ratio $\frac{F_{2}}{F_{1}}$ is:

Discussion

14.	A dc generator generates 300 V on open circuit, running at speed of 600 rpm with diameter of pole shoe circle 0.4 m and ratio of pole arc to pole pitch 0.8. Being a 6 pole dc machine with pole shoe length 0.2 m it carries 1000 armature conductors, connected in wave winding arrangement, then the average flux density will be_________ Tesla.0.298
Answer» A dc generator generates 300 V on open circuit, running at speed of 600 rpm with diameter of pole shoe circle 0.4 m and ratio of pole arc to pole pitch 0.8. Being a 6 pole dc machine with pole shoe length 0.2 m it carries 1000 armature conductors, connected in wave winding arrangement, then the average flux density will be_________ Tesla. 0.298

Discussion

15.	6. What is the difference in energy between I1s and 2p-orbitals in the hydrogen atom? In the X-ray spectrum of Cu, radiation of 1.54 A wave length is emitted when an electron changes from 2p to 1s-orbitalis. what is the energy difference between these orbitals in copper?
Answer» 6. What is the difference in energy between I1s and 2p-orbitals in the hydrogen atom? In the X-ray spectrum of Cu, radiation of 1.54 A wave length is emitted when an electron changes from 2p to 1s-orbitalis. what is the energy difference between these orbitals in copper?

Discussion

16.	18. The work done required to stop a car of mass 1000kg moving at a velocity of 20m/s will be
Answer» 18. The work done required to stop a car of mass 1000kg moving at a velocity of 20m/s will be

Discussion

17.	A car is moving in a circular horizontal track of radius 10 m with a constant speed of 10 m/s. A bob is suspended from the roof of the car by a light rigid rod. The angle (in degrees) made by the rod with the vertical is [Take g=10 m/s2]
Answer» A car is moving in a circular horizontal track of radius $10 m$ with a constant speed of $10 m/s$ . A bob is suspended from the roof of the car by a light rigid rod. The angle (in degrees) made by the rod with the vertical is [Take $g = 10 {m/s}^{2}$ ]

Discussion

18.	Twelve equal wires, each of resistance 6 Ω are connected so as to form a cube-frame. Find the equivalent resistance( in Ω) between the diagonally opposite points 1 and 7.
Answer» Twelve equal wires, each of resistance $6 Ω$ are connected so as to form a cube-frame. Find the equivalent resistance( in $Ω$ ) between the diagonally opposite points 1 and 7.

Discussion

19.	. The potential energy of a particle of mass 5 kg moving in x-y plane is given by equation, U = –7x + 24y joule. Here x and y are in metre at t = 0, the particle is at origin and moving with velocity ( 2i +3j ˆ{{}}_{}^{} ) m/s. The magnitude of acceleration of particle is
Answer» . The potential energy of a particle of mass 5 kg moving in x-y plane is given by equation, U = –7x + 24y joule. Here x and y are in metre at t = 0, the particle is at origin and moving with velocity ( 2i +3j ˆ{{}}_{}^{} ) m/s. The magnitude of acceleration of particle is

Discussion

20.	If the earth is treated as sphere of radius R and mass M, its angular momentum about the axis of its rotation with period T, is
Answer» If the earth is treated as sphere of radius R and mass M, its angular momentum about the axis of its rotation with period T, is

Discussion

21.	A beam of light of wavelength λ and with illumination L falls on a clean surface of sodium. If N photoelectrons are emitted each with kinetic energy E, then
Answer» A beam of light of wavelength $λ$ and with illumination L falls on a clean surface of sodium. If N photoelectrons are emitted each with kinetic energy E, then

Discussion

22.	A dipole with an electric moment p is located at a distance r from a Long thread charged uniformaly with a linear charge density lambda. Find the force F acting on the dipole if the vector p is oriented along the thread
Answer» A dipole with an electric moment p is located at a distance r from a Long thread charged uniformaly with a linear charge density lambda. Find the force F acting on the dipole if the vector p is oriented along the thread

Discussion

23.	How many number of trains of circular coil of radius 12.56 cm and current 1A will produce the magnetic induction of 5×10^-5 T at its centre 1.) 5 2.) 10 3.) 15 4.) 20
Answer» How many number of trains of circular coil of radius 12.56 cm and current 1A will produce the magnetic induction of 5×10^-5 T at its centre 1.) 5 2.) 10 3.) 15 4.) 20

Discussion

24.	14. What is Universal set
Answer» 14. What is Universal set

Discussion

25.	Find the integral of the given function w.r.t - xy=e(5x+10)
Answer» Find the integral of the given function w.r.t - x $y = e^{(5 x + 10)}$

25.

Find the integral of the given function w.r.t - xy=e(5x+10)

Answer»

Find the integral of the given function w.r.t - x

$y = e^{(5 x + 10)}$

Discussion

26.	If A=3^i+4^j and B=7^i+24^j, the vector having the same magnitude as B and parallel to A is
Answer» If $A = 3^i + 4^j$ and $B = 7^i + 24^j$ , the vector having the same magnitude as B and parallel to A is

Discussion

27.	{ A uniform thin rod of length }( and } mass }m is hinged }} at one end }O and released from horizontal position } as shown in figure. The angular acceleration of } the rod about the hinge point,} when rod becomes } ulvertical is }0
Answer» { A uniform thin rod of length }( and } mass }m is hinged }} at one end }O and released from horizontal position } as shown in figure. The angular acceleration of } the rod about the hinge point,} when rod becomes } ulvertical is }0

Discussion

28.	A 10 μF capacitor is fully charged across a 12 V battery. The capacitor is then disconnected from the battery and connected across an initially uncharged capacitor C. The voltage across each capacitor is now 3 V. What is the unknown capacitance C (in μF)?
Answer» A $10 μ F$ capacitor is fully charged across a $12 V$ battery. The capacitor is then disconnected from the battery and connected across an initially uncharged capacitor $C$ . The voltage across each capacitor is now $3 V$ . What is the unknown capacitance $C$ (in $μ F$ )?

Discussion

29.	The minimum value of the distance travelled by a body(the pathlength of its journey is)
Answer» The minimum value of the distance travelled by a body(the pathlength of its journey is)

Discussion

30.	If the following equation estabilishes equilibrium in slightly bent position,d2ydx2+PEIy=0the mid-span deflection of a member shown in figure is [a is the amplitude constant for y]
Answer» If the following equation estabilishes equilibrium in slightly bent position, $\frac{d^{2} y}{d x^{2}} + \frac{P}{E I} y = 0$ the mid-span deflection of a member shown in figure is [a is the amplitude constant for y]

Discussion

31.	A particle starting from rest begins to move along a straight line with acceleration a. Its complete path x is divided into n equal parts. At the end of each part, its acceleration increases by a/n. Prove that the velocity of the particle at the end of the path is √[ax(3n – 1) /n]
Answer» A particle starting from rest begins to move along a straight line with acceleration a. Its complete path x is divided into n equal parts. At the end of each part, its acceleration increases by a/n. Prove that the velocity of the particle at the end of the path is √[ax(3n – 1) /n]

Discussion

32.	There are two identical small holes on the opposite sides of a tank containing a liquid. The tank is open at the top. The difference in height between the two holes is h. As the liquid comes out of the two holes, the tank will experience a net horizontal force proportional to -
Answer» There are two identical small holes on the opposite sides of a tank containing a liquid. The tank is open at the top. The difference in height between the two holes is $h$ . As the liquid comes out of the two holes, the tank will experience a net horizontal force proportional to -

Discussion

33.	two charges + q and + 2q, are held in place on the x axis at the locations x-d andx + d respectively. A third charge, +3q, is released from rest on the y axis at y d(a) Find the electric potential at the initial location of the third charge. (b) Find the initial electricpotential energy of the third charge. (c) What is the kinetic energy of the third charge when ithas moved infinitely far away from the other two charges?
Answer» two charges + q and + 2q, are held in place on the x axis at the locations x-d andx + d respectively. A third charge, +3q, is released from rest on the y axis at y d(a) Find the electric potential at the initial location of the third charge. (b) Find the initial electricpotential energy of the third charge. (c) What is the kinetic energy of the third charge when ithas moved infinitely far away from the other two charges?

Discussion

34.	Question 9Two particles are placed at some distance. If the mass of each of the two particles is doubled, keeping the distance between them unchanged, the value of gravitational force between them will be(a) 14 times(b) 4 times(c) 12 times(d) Unchanged
Answer» Question 9 Two particles are placed at some distance. If the mass of each of the two particles is doubled, keeping the distance between them unchanged, the value of gravitational force between them will be (a) $\frac{1}{4} t i m e s$ (b) $4 t i m e s$ (c) $\frac{1}{2} t i m e s$ (d) Unchanged

Discussion

35.	The current passing through the battery immediately after key (K) is closed (Initially all the capacitors are uncharged and the value of R=6 Ω and C=4 μF) is
Answer» The current passing through the battery immediately after key $(K)$ is closed (Initially all the capacitors are uncharged and the value of $R = 6 Ω$ and $C = 4 μ F$ ) is

Discussion

36.	Four metal plates numbered 1,2,3 and 4 are arranged as shown below. The area of each plate is A and separation between adjacent plates is d. The capacitance of the arrangement is
Answer» Four metal plates numbered $1, 2, 3$ and $4$ are arranged as shown below. The area of each plate is $A$ and separation between adjacent plates is $d$ . The capacitance of the arrangement is

Discussion

37.	the acceleration of a particle inversely proportional to distance travelled by the particle find the dimension of proportionality constant
Answer» the acceleration of a particle inversely proportional to distance travelled by the particle find the dimension of proportionality constant

Discussion

38.	A disc rotates about its axis with a constant angular acceleration of 4 rad/s2. Find the radial and tangential accelerations of a particle at a distance of 1 cm from the axis at the end of the first second after the disc starts rotating.
Answer» A disc rotates about its axis with a constant angular acceleration of 4 rad/s $^{2}$ . Find the radial and tangential accelerations of a particle at a distance of 1 cm from the axis at the end of the first second after the disc starts rotating.

38.

A disc rotates about its axis with a constant angular acceleration of 4 rad/s2. Find the radial and tangential accelerations of a particle at a distance of 1 cm from the axis at the end of the first second after the disc starts rotating.

Answer»

A disc rotates about its axis with a constant angular acceleration of 4 rad/s $^{2}$ . Find the radial and tangential accelerations of a particle at a distance of 1 cm from the axis at the end of the first second after the disc starts rotating.

Discussion

39.	Which of the following is expected to be optically active?
Answer» Which of the following is expected to be optically active?

Discussion

40.	78.A battery of emf 10 is connected to resistances as shown in fig. The pd bw the points A and B
Answer» 78.A battery of emf 10 is connected to resistances as shown in fig. The pd bw the points A and B

Discussion

41.	The conductivities of four electrolytes P, Q, R & S in ohm–1cm–1 are as follows P (5×10–5), Q (1×10–10), R (7×10–8), S (9.2×10–3). The one which offers highest resistance to the passage of electric current is
Answer» The conductivities of four electrolytes P, Q, R & S in ohm–1cm–1 are as follows P (5×10–5), Q (1×10–10), R (7×10–8), S (9.2×10–3). The one which offers highest resistance to the passage of electric current is

Discussion

42.	113. A vector of length l is turned through the angle theta about it's tail what is the change in the position vector of its head?
Answer» 113. A vector of length l is turned through the angle theta about it's tail what is the change in the position vector of its head?

Discussion

43.	What is the main concept of relative velocity?
Answer» What is the main concept of relative velocity?

Discussion

44.	The electrostatic potential of a sphere of radius r is given by φ=ar²+b. The charge density of sphere i
Answer» The electrostatic potential of a sphere of radius r is given by φ=ar²+b. The charge density of sphere i

Discussion

45.	Two swimmers leave. A on one bank of the river to reach point B line right across the other back one of the two causes the river along the straight line AB while the other streams at right angle to the stream and then what's the distance that he has been carried away by the street to get to point B. What is the velocity of his walking if both swimmers reached the destination simultaneously? ( The stream velocity = 2 km/h and the velocity of each swimmer w.r.t still water is 2.5 km/h)
Answer» Two swimmers leave. A on one bank of the river to reach point B line right across the other back one of the two causes the river along the straight line AB while the other streams at right angle to the stream and then what's the distance that he has been carried away by the street to get to point B. What is the velocity of his walking if both swimmers reached the destination simultaneously? ( The stream velocity = 2 km/h and the velocity of each swimmer w.r.t still water is 2.5 km/h)

Discussion

46.	Is a positively charged body attracted by a neutrally charged body to the same extent as a negatively charged body?
Answer» Is a positively charged body attracted by a neutrally charged body to the same extent as a negatively charged body?

Discussion

47.	Describe the motion depicted in the given below graphs. [3 MARKS]
Answer» Describe the motion depicted in the given below graphs. [3 MARKS]

47.

Describe the motion depicted in the given below graphs. [3 MARKS]

Answer»

Describe the motion depicted in the given below graphs. [3 MARKS]

Discussion

48.	The value of ∫ax⋅exdx is equal to, where a>0 and a≠1(where C is integration constant)
Answer» The value of $\int a^{x} \cdot e^{x} d x$ is equal to, where $a > 0$ and $a \neq 1$ (where $C$ is integration constant)

Discussion

49.	how force is equal to density× area× velocity^{
Answer» how force is equal to density× area× velocity^{

Discussion

50.	Three blocks of mass 2 kg, 3 kg and 5 kg are connected to each other with light string and are then placed on a frictionless surface as shown in the figure. The system is pulled by a force of 10 N, tension T1 is equal to
Answer» Three blocks of mass $2 k g$ , $3 k g$ and $5 k g$ are connected to each other with light string and are then placed on a frictionless surface as shown in the figure. The system is pulled by a force of $10 N$ , tension $T_{1}$ is equal to

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

a ball is thrown from a point O aiming a target at angle 30 degree with horizontal so that the ball hits the target at B but ball hits at A a vertical dis†an ce h below if initial velocity is 20 metre per second and dis†an ce Oc is 10m find

Two inductors of inductance 2 mH and 5 mH are connected in parallel and a time varying current i flows as shown in the figure. The ratio of currents i1 and i2 at any time t is-

A uniform rod AB of mass m is hinged to the wall at it's lower end while it's upper end is held by a rope attached to the wall. For what value of theta the tension in the rope is mg/2?(Given: the rod makes 60^° with the wall) and theta is the angle that rope makes with the wall

the displacement of a body is given by s=1/2(gt^2) , where g is acceleration due to gravity. The velocity of the body at any time t is Options: a) gt^3/6 b) gt^2/2 c) gt d) gt/2

Maximum sound pressure tolerable by the human ear is 30 N/m2. For a sound of frequency 103 Hz and speed 300 m/s, the maximum displacement of particles of the medium is [density of air =1.5 kg/m3)]

A particle moves in a circle of radius 20cm with a linear speed of 10 m/s. Find the angular velocity, in rad/sec is___

The speed of block B in a pulley-block system as shown in figure is

One end of a copper rod of length 1 m and area of cross section 4.0×10−4m2 is maintained at 100∘C. At the other end of the rod ice is kept at 0∘C. Neglecting the loss of heat to the surroundings, find the mass (in gm) of ice melted in 1 hour.Given KCu=401 W/m - K and Lf=3.35×105 J/kg.

Average velocity of a particle moving in a straight line ,with constant accleration & initial velocity u in first t sec is: A) u+ at/2 B)u+at C)u+at/2 D)u/2

44. Two stones having masses in the ratio of 3:2are dropped from the heights in the ratio of 4:9.the ratio of magnitude of their linear momenta just before reaching the ground is??

Which of the following is the correct relation for the second principal focal length of a single spherical surface?

6. What is the difference in energy between I1s and 2p-orbitals in the hydrogen atom? In the X-ray spectrum of Cu, radiation of 1.54 A wave length is emitted when an electron changes from 2p to 1s-orbitalis. what is the energy difference between these orbitals in copper?

18. The work done required to stop a car of mass 1000kg moving at a velocity of 20m/s will be

A car is moving in a circular horizontal track of radius 10 m with a constant speed of 10 m/s. A bob is suspended from the roof of the car by a light rigid rod. The angle (in degrees) made by the rod with the vertical is [Take g=10 m/s2]

Twelve equal wires, each of resistance 6 Ω are connected so as to form a cube-frame. Find the equivalent resistance( in Ω) between the diagonally opposite points 1 and 7.

. The potential energy of a particle of mass 5 kg moving in x-y plane is given by equation, U = –7x + 24y joule. Here x and y are in metre at t = 0, the particle is at origin and moving with velocity ( 2i +3j ˆ{{}}_{}^{} ) m/s. The magnitude of acceleration of particle is

If the earth is treated as sphere of radius R and mass M, its angular momentum about the axis of its rotation with period T, is

A beam of light of wavelength λ and with illumination L falls on a clean surface of sodium. If N photoelectrons are emitted each with kinetic energy E, then

A dipole with an electric moment p is located at a distance r from a Long thread charged uniformaly with a linear charge density lambda. Find the force F acting on the dipole if the vector p is oriented along the thread

How many number of trains of circular coil of radius 12.56 cm and current 1A will produce the magnetic induction of 5×10^-5 T at its centre 1.) 5 2.) 10 3.) 15 4.) 20

14. What is Universal set

Find the integral of the given function w.r.t - xy=e(5x+10)

If A=3^i+4^j and B=7^i+24^j, the vector having the same magnitude as B and parallel to A is

{ A uniform thin rod of length }( and } mass }m is hinged }} at one end }O and released from horizontal position } as shown in figure. The angular acceleration of } the rod about the hinge point,} when rod becomes } ulvertical is }0

A 10 μF capacitor is fully charged across a 12 V battery. The capacitor is then disconnected from the battery and connected across an initially uncharged capacitor C. The voltage across each capacitor is now 3 V. What is the unknown capacitance C (in μF)?

The minimum value of the distance travelled by a body(the pathlength of its journey is)

If the following equation estabilishes equilibrium in slightly bent position,d2ydx2+PEIy=0the mid-span deflection of a member shown in figure is [a is the amplitude constant for y]

A particle starting from rest begins to move along a straight line with acceleration a. Its complete path x is divided into n equal parts. At the end of each part, its acceleration increases by a/n. Prove that the velocity of the particle at the end of the path is √[ax(3n – 1) /n]

There are two identical small holes on the opposite sides of a tank containing a liquid. The tank is open at the top. The difference in height between the two holes is h. As the liquid comes out of the two holes, the tank will experience a net horizontal force proportional to -

Question 9Two particles are placed at some distance. If the mass of each of the two particles is doubled, keeping the distance between them unchanged, the value of gravitational force between them will be(a) 14 times(b) 4 times(c) 12 times(d) Unchanged

The current passing through the battery immediately after key (K) is closed (Initially all the capacitors are uncharged and the value of R=6 Ω and C=4 μF) is

Four metal plates numbered 1,2,3 and 4 are arranged as shown below. The area of each plate is A and separation between adjacent plates is d. The capacitance of the arrangement is

the acceleration of a particle inversely proportional to distance travelled by the particle find the dimension of proportionality constant

A disc rotates about its axis with a constant angular acceleration of 4 rad/s2. Find the radial and tangential accelerations of a particle at a distance of 1 cm from the axis at the end of the first second after the disc starts rotating.

Which of the following is expected to be optically active?

78.A battery of emf 10 is connected to resistances as shown in fig. The pd bw the points A and B

The conductivities of four electrolytes P, Q, R & S in ohm–1cm–1 are as follows P (5×10–5), Q (1×10–10), R (7×10–8), S (9.2×10–3). The one which offers highest resistance to the passage of electric current is

113. A vector of length l is turned through the angle theta about it's tail what is the change in the position vector of its head?

What is the main concept of relative velocity?

The electrostatic potential of a sphere of radius r is given by φ=ar²+b. The charge density of sphere i

Is a positively charged body attracted by a neutrally charged body to the same extent as a negatively charged body?

Describe the motion depicted in the given below graphs. [3 MARKS]

The value of ∫ax⋅exdx is equal to, where a&gt;0 and a≠1(where C is integration constant)

how force is equal to density× area× velocity^{

Three blocks of mass 2 kg, 3 kg and 5 kg are connected to each other with light string and are then placed on a frictionless surface as shown in the figure. The system is pulled by a force of 10 N, tension T1 is equal to

The value of ∫ax⋅exdx is equal to, where a>0 and a≠1(where C is integration constant)