50278 + Interview Questions in Physics

1.	Two small identical balls P and Q, each of mass √310 gram, carry identical charges and are suspended by threads of equal lengths. At equilibrium, they position themselves as shown in fig. What is the charge on each ball? Given 14πϵ0=9×109Nm2C−2 and take g=10ms−2
Answer» Two small identical balls P and Q, each of mass $\frac{\sqrt{3}}{10}$ gram, carry identical charges and are suspended by threads of equal lengths. At equilibrium, they position themselves as shown in fig. What is the charge on each ball? Given $\frac{1}{4 π ϵ_{0}} = 9 \times 10^{9} N m^{2} C^{- 2}$ and take $g = 10 m s^{- 2}$

Discussion

2.	Two springs of spring cons†an t 1500N/m and 3000N/m respectively are stretched with the same force. They will have the potential energy in ratio (1) 4:1 (2) 1:4 (3) 2:1 (4) 1:2
Answer» Two springs of spring cons†an t 1500N/m and 3000N/m respectively are stretched with the same force. They will have the potential energy in ratio (1) 4:1 (2) 1:4 (3) 2:1 (4) 1:2

Discussion

3.	In young's double slit experiment, interference pattern is observed on the screen L distance away from slits, distance between centre of two consecutive bright fringes is x and slits separation is d, then the wavelength of light will be –
Answer» In young's double slit experiment, interference pattern is observed on the screen $L$ distance away from slits, distance between centre of two consecutive bright fringes is $x$ and slits separation is $d$ , then the wavelength of light will be –

Discussion

4.	′n′ transparent slabs of refractive index 1.5 each having thickness 1 cm,2 cm,...n cm are arranged one over the other. A point object is seen through this combination from top with perpendicular light. If the shift of the object by combination is 5 cm. Then the value of ′n′ is
Answer» $^{'} n^{'}$ transparent slabs of refractive index $1.5$ each having thickness $1 cm, 2 cm, . . . n cm$ are arranged one over the other. A point object is seen through this combination from top with perpendicular light. If the shift of the object by combination is $5 cm$ . Then the value of $^{'} n^{'}$ is

Discussion

5.	in YDSE two pin holes are seperated by a dis†an ce 2.5 lambda where lambda ia wavelength of light. initial phase difference is zero. a screen is placed perpendicular to line joining two pin holes. at the centre of screen . we obtain 1. a minima 2. a maxima 3. neither maxima nor minima 4. information not sufficient
Answer» in YDSE two pin holes are seperated by a dis†an ce 2.5 lambda where lambda ia wavelength of light. initial phase difference is zero. a screen is placed perpendicular to line joining two pin holes. at the centre of screen . we obtain 1. a minima 2. a maxima 3. neither maxima nor minima 4. information not sufficient

Discussion

6.	13. Force between two charges placed at a distance r in vacuum is F .Now a dielectric slab of K =4 is inserted between them .its thickness is r/2.The new force between the charges
Answer» 13. Force between two charges placed at a distance r in vacuum is F .Now a dielectric slab of K =4 is inserted between them .its thickness is r/2.The new force between the charges

Discussion

7.	A river is flowing with a speed of 1 km/hr. A swimmer wants to go to point ‘C’ starting from ‘A’. He swims with a speed of 5 km/hr at an angle θ w.r.t the river flow. If AB =BC =400 m, what is the value of θ?
Answer» A river is flowing with a speed of 1 km/hr. A swimmer wants to go to point ‘C’ starting from ‘A’. He swims with a speed of 5 km/hr at an angle $θ$ w.r.t the river flow. If AB =BC =400 m, what is the value of $θ$ ?

Discussion

8.	A room has AC run for 5 hours a day at a voltage of 220 V. The wiring of the room consists of Cu of 1 mm radius and a length of 10 m. Power consumption per day is 10 commercial units. What fraction of it goes in the joule heating in wires? What would happen if the wiring is made of aluminium of the same dimensions? [ρCu = 1.7 × 10−8 Ω m, ρAl = 2.7 × 10−8 Ω m]
Answer» A room has AC run for 5 hours a day at a voltage of 220 V. The wiring of the room consists of Cu of 1 mm radius and a length of 10 m. Power consumption per day is 10 commercial units. What fraction of it goes in the joule heating in wires? What would happen if the wiring is made of aluminium of the same dimensions? [ρCu = 1.7 × $10^{- 8}$ Ω m, ρAl = 2.7 × $10^{- 8}$ Ω m]

Discussion

9.	If acceleration is uniform then it's value in mathematical expression is?
Answer» If acceleration is uniform then it's value in mathematical expression is?

Discussion

10.	A mass of block 8 kg is attached by a rope with other block of mass 4 kg as shown in the figure. Find the acceleration of COM of the system. (Neglect friction everywhere and neglect the mass of the rope and pulley)
Answer» A mass of block $8 kg$ is attached by a rope with other block of mass $4 kg$ as shown in the figure. Find the acceleration of COM of the system. (Neglect friction everywhere and neglect the mass of the rope and pulley)

Discussion

11.	The threshold frequency of a metal corresponds to the wavelength of x nm. In two separate experiments A and B, incident radiations of wavelengths 1/2x nm and 1/4x nm respectively are used. The ratio of kinetic energy of the released electrons in experiment B to that in experiment A is-
Answer» The threshold frequency of a metal corresponds to the wavelength of x nm. In two separate experiments A and B, incident radiations of wavelengths 1/2x nm and 1/4x nm respectively are used. The ratio of kinetic energy of the released electrons in experiment B to that in experiment A is-

Discussion

12.	The number of particles n crossing a unit area perpendicular to the x – axis in unit time can be written as n = p (n2−n1)(x2−x1) where n1andn2 are number of particles per unit volume between length (x2−x1). The dimensions of p are
Answer» The number of particles n crossing a unit area perpendicular to the x – axis in unit time can be written as n = p $\frac{(n_{2} - n_{1})}{(x_{2} - x_{1})}$ where $n_{1} a n d n_{2}$ are number of particles per unit volume between length $(x_{2} - x_{1})$ . The dimensions of p are

Discussion

13.	33.The resistance of the ammeter and the voltmeter connected in the circuit shown in the figure are 0.8 ohm and 98 ohm respectively.what r the readings in ammeter and voltmeter?
Answer» 33.The resistance of the ammeter and the voltmeter connected in the circuit shown in the figure are 0.8 ohm and 98 ohm respectively.what r the readings in ammeter and voltmeter?

Discussion

14.	An aircraft with a wing span of 40 m flies with a speed of 1080 km-hr−1 in the eastward direction at a constant altitude in the Northern Hemisphere, where the vertical component of earth's magnetic field is 1.75×10−5 T. Find the emf that develops across the tips of the wings.
Answer» An aircraft with a wing span of $40 m$ flies with a speed of $1080 {km-hr}^{- 1}$ in the eastward direction at a constant altitude in the Northern Hemisphere, where the vertical component of earth's magnetic field is $1.75 \times 10^{- 5} T$ . Find the emf that develops across the tips of the wings.

Discussion

15.	A current is made of two components, a DC component of 3A and AC component of 4√2sinωtA. The reading of the hot wire ammeter is
Answer» A current is made of two components, a DC component of 3A and AC component of $4 \sqrt{2} s i n ω t A$ . The reading of the hot wire ammeter is

Discussion

16.	6.How the magnitude of electromagnetic force changes on changing the medium?
Answer» 6.How the magnitude of electromagnetic force changes on changing the medium?

Discussion

17.	Man A takes 5 seconds to stop a 1 kg ball thrown at 10 m/s at him. Man B takes the same time to return the same ball coming at him at 5 m/s exactly in the opposite direction with same speed. Who applied more force?
Answer» Man A takes 5 seconds to stop a 1 kg ball thrown at 10 m/s at him. Man B takes the same time to return the same ball coming at him at 5 m/s exactly in the opposite direction with same speed. Who applied more force?

Discussion

18.	31. For the formation of 3.65g of HCl gas what volume of hydrogen gas and chlorine gas are required at NTP CONDITION?
Answer» 31. For the formation of 3.65g of HCl gas what volume of hydrogen gas and chlorine gas are required at NTP CONDITION?

Discussion

19.	A metallic spherical shell of inner radius R1 and outer radius R2 is shown in figure below. A charge is placed at the centre of the spherical cavity. The surface charge density on the inner surface is:
Answer» A metallic spherical shell of inner radius $R_{1}$ and outer radius $R_{2}$ is shown in figure below. A charge is placed at the centre of the spherical cavity. The surface charge density on the inner surface is:

Discussion

20.	For a particle whose speed decreases as it undergoes a circular motion with instantaneous velocity →v,जब एक कण तात्क्षणिक वेग →v से वृत्तीय गति करता है, इसकी चाल घटती है, तब इस कण के लिए
Answer» For a particle whose speed decreases as it undergoes a circular motion with instantaneous velocity $\to v$ , जब एक कण तात्क्षणिक वेग $\to v$ से वृत्तीय गति करता है, इसकी चाल घटती है, तब इस कण के लिए

Discussion

21.	18.The ratio of distancesdescribed by a body falling freely from rest in the last second of its motion to that in last but one second of its motion is 5:4 find the toval time taken by the body to reach the ground
Answer» 18.The ratio of distancesdescribed by a body falling freely from rest in the last second of its motion to that in last but one second of its motion is 5:4 find the toval time taken by the body to reach the ground

Discussion

22.	An electric dipole consisting of two opposite charges of 2×10−6C separated by a distance of 3cm is placed in an electric field of 2×105N/C. The maximum torque on the dipole will be
Answer» An electric dipole consisting of two opposite charges of $2 \times 10^{- 6} C$ separated by a distance of 3cm is placed in an electric field of $2 \times 10^{5} N / C$ . The maximum torque on the dipole will be

Discussion

23.	How can we determine the range of frequency over which a signal can be transmitted ?
Answer» How can we determine the range of frequency over which a signal can be transmitted ?

Discussion

24.	What is the de Broglie wavelength of an electron with a kinetic energy of 120 eV?(Given: h=6.63×10−34 Js,me=9.11×10−31 kg,e=1.6×10−19 coulomb
Answer» What is the de Broglie wavelength of an electron with a kinetic energy of $120 eV$ ? (Given: $h = 6.63 \times 10^{- 34} Js, m_{e} = 9.11 \times 10^{- 31} kg, e = 1.6 \times 10^{- 19} coulomb$

Discussion

25.	What is the stopping potential when the metal with work function 0.6 eV is illuminated with the light of 2 eV
Answer» What is the stopping potential when the metal with work function 0.6 eV is illuminated with the light of 2 eV

Discussion

26.	If a current I given by I0 sin(ωt−π2) flows in an ac circuit across which an ac potential of E=E0sin ω t has been applied, then the power consumption P in the circuit will be
Answer» If a current I given by $I_{0} s i n (ω t - \frac{π}{2})$ flows in an ac circuit across which an ac potential of $E = E_{0} s i n ω t$ has been applied, then the power consumption P in the circuit will be

Discussion

27.	What is the value of iota the power iota?
Answer» What is the value of iota the power iota?

Discussion

28.	Smalles unit of charge is -Frankline -Faraday - Coulomb -e.m.u
Answer» Smalles unit of charge is -Frankline -Faraday - Coulomb -e.m.u

Discussion

29.	If the surface area of each surface of a plate is A and separation between two adjacent plates is d. Calculate the charge given by the battery.
Answer» If the surface area of each surface of a plate is $A$ and separation between two adjacent plates is $d$ . Calculate the charge given by the battery.

Discussion

30.	The equiconvex lens of glass refractive index 1.5 of focal length 10 cm in air is silvered on one side it will behave lik
Answer» The equiconvex lens of glass refractive index 1.5 of focal length 10 cm in air is silvered on one side it will behave lik

Discussion

31.	If the gas expands against vaccum then the work done is zero .How
Answer» If the gas expands against vaccum then the work done is zero .How

Discussion

32.	A machine gun has mass of 20kg.It fires 25g bullet at the rate of 600 bullets per minutes with a speed of 200 m/s.Calculate recoil velocity of the gun and force required to keep the gun in position.
Answer» A machine gun has mass of 20kg.It fires 25g bullet at the rate of 600 bullets per minutes with a speed of 200 m/s.Calculate recoil velocity of the gun and force required to keep the gun in position.

Discussion

33.	how light ray gets bend towards the normal through converging len
Answer» how light ray gets bend towards the normal through converging len

Discussion

34.	∫(t√t+√tt2)dt is equal to
Answer» $\int (\frac{t \sqrt{t} + \sqrt{t}}{t^{2}}) d t$ is equal to

Discussion

35.	A body is thrown horizontally from the top of a tower of height 5 m. It touches the ground at a distance of 10 m from the foot of the tower. The initial velocity of the body is (g = 10 ms−2)
Answer» A body is thrown horizontally from the top of a tower of height 5 m. It touches the ground at a distance of 10 m from the foot of the tower. The initial velocity of the body is (g = 10 $m s^{- 2}$ )

Discussion

36.	In a system of two concentric spherical conducting shells charge q is given to both inner and outer shells as shown in figure. Inner shell is connected to earth by a switch. Find the amount of heat produced when switch is closed.
Answer» In a system of two concentric spherical conducting shells charge $q$ is given to both inner and outer shells as shown in figure. Inner shell is connected to earth by a switch. Find the amount of heat produced when switch is closed.

Discussion

37.	Two identical bar magnets are held perpendicular to each other with a certain separation, as shown below. The area around the magnets is divided into four zones.Given that there is a neutral point, it is located in
Answer» Two identical bar magnets are held perpendicular to each other with a certain separation, as shown below. The area around the magnets is divided into four zones. Given that there is a neutral point, it is located in

37.

Two identical bar magnets are held perpendicular to each other with a certain separation, as shown below. The area around the magnets is divided into four zones.Given that there is a neutral point, it is located in

Answer»

Two identical bar magnets are held perpendicular to each other with a certain separation, as shown below. The area around the magnets is divided into four zones.

Given that there is a neutral point, it is located in

Discussion

38.	Two small balls each having a positive charge q coulomb is suspended by two insulated strings of equal length l meter from a hook fixed to a stand.the whole setup is taken in a satellite into space where there is no gravity. The angle between tension in each string will be _.
Answer» Two small balls each having a positive charge q coulomb is suspended by two insulated strings of equal length l meter from a hook fixed to a stand.the whole setup is taken in a satellite into space where there is no gravity. The angle between tension in each string will be _.

Discussion

39.	A parallel plate capacitor is charged by connecting its plates to the terminals of a battery. The battery is then disconnected and a glass plate is interposed between the plates of the capacitor, then
Answer» A parallel plate capacitor is charged by connecting its plates to the terminals of a battery. The battery is then disconnected and a glass plate is interposed between the plates of the capacitor, then

Discussion

40.	FIND THE WORK DONE BY CONSERVATIVE FORCE WHEN PARTICLE MOVES FROM A(d,d)&B(2d,2d).u=ax^2+b
Answer» FIND THE WORK DONE BY CONSERVATIVE FORCE WHEN PARTICLE MOVES FROM A(d,d)&B(2d,2d).u=ax^2+b

Discussion

41.	In the circuit shown in the figure, E=50 V, R=250 Ω, L=20 mH and C=0.5 μF. The switch is closed for a long time and no voltage is measured across the capacitor. After the switch is opened, the voltage across the capacitor reaches a maximum value of V(Integer only)
Answer» In the circuit shown in the figure, $E = 50 V, R = 250 Ω, L = 20 mH$ and $C = 0.5 μ F$ . The switch is closed for a long time and no voltage is measured across the capacitor. After the switch is opened, the voltage across the capacitor reaches a maximum value of $V$ (Integer only)

Discussion

42.	A point moves along an arc of a circle of radius R.Its velocity depends on the distance covered (s) as V=as, where a is constant.Find the angle X between the vector of the total acceleration and the vector of the velocity as a function of s
Answer» A point moves along an arc of a circle of radius R.Its velocity depends on the distance covered (s) as V=as, where a is constant.Find the angle X between the vector of the total acceleration and the vector of the velocity as a function of s

Discussion

43.	What will be the escape speed from a planethaving volume 27 times that of earth and the samemean density as that of the earth? (Take escapespeed from the earth 11.2 km/s, earth and planetare perfectly sphere)
Answer» What will be the escape speed from a planethaving volume 27 times that of earth and the samemean density as that of the earth? (Take escapespeed from the earth 11.2 km/s, earth and planetare perfectly sphere)

Discussion

44.	the velocity of a particle is given by v=at^2+bt+c,where v is in m/s, time t is in second abd a b,c are the cons†an ts. the unit of the quantity abc is
Answer» the velocity of a particle is given by v=at^2+bt+c,where v is in m/s, time t is in second abd a b,c are the cons†an ts. the unit of the quantity abc is

Discussion

45.	Q 13/15 An astronaut inside an earth satelliteexperiences weightlessness because He is falling freely towards the centre ofearth everytime No external force is acting on him He is far away from the earth's surface Gravitational pull by the earth is consumed toprovide centripetal force
Answer» Q 13/15 An astronaut inside an earth satelliteexperiences weightlessness because He is falling freely towards the centre ofearth everytime No external force is acting on him He is far away from the earth's surface Gravitational pull by the earth is consumed toprovide centripetal force

Discussion

46.	Two mirrors placed at an angle of θ produces 5 images of an object placed symmetrically between the mirrors. The number of images produced when θ is decreased by 30∘ will be
Answer» Two mirrors placed at an angle of $θ$ produces $5$ images of an object placed symmetrically between the mirrors. The number of images produced when $θ$ is decreased by $30^{\circ}$ will be

Discussion

47.	A car travelled the first one-third of the distance d at a speed of 20 kmh−1, the second one-third of the distance at a speed of 40 kmh−1 and the last one-third of the distance at a speed of 120 kmh−1. Determine the average speed of the car.
Answer» A car travelled the first one-third of the distance $d$ at a speed of $20 k m h^{- 1}$ , the second one-third of the distance at a speed of $40 k m h^{- 1}$ and the last one-third of the distance at a speed of $120 k m h^{- 1}$ . Determine the average speed of the car.

Discussion

48.	A capacitor and a coil in series are connected to a 6 volt ac source. By varying the frequency of the source, maximum current of 600 mA is observed. If the same coil is now connected to a cell of emf 6 volt and internal resistance of 2 Ω, the current through it will be :
Answer» A capacitor and a coil in series are connected to a $6 volt$ ac source. By varying the frequency of the source, maximum current of $600 mA$ is observed. If the same coil is now connected to a cell of emf $6 volt$ and internal resistance of $2 Ω$ , the current through it will be :

Discussion

49.	How to represent wave equation
Answer» How to represent wave equation

Discussion

50.	A particle is projected from ground with a speed of v0=80 m/s at angle of 60∘ with horizontal. During first 3 seconds average velocity is →v & acceleration is →a & displacement is −→Δr, then (→a×→v).−→Δr equals to
Answer» A particle is projected from ground with a speed of $v_{0} = 80 m / s$ at angle of $60^{\circ}$ with horizontal. During first 3 seconds average velocity is $\to v$ & acceleration is $\to a$ & displacement is $- \to Δ r$ , then $(\to a \times \to v) . - \to Δ r$ equals to

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Two small identical balls P and Q, each of mass √310 gram, carry identical charges and are suspended by threads of equal lengths. At equilibrium, they position themselves as shown in fig. What is the charge on each ball? Given 14πϵ0=9×109Nm2C−2 and take g=10ms−2

Two springs of spring cons†an t 1500N/m and 3000N/m respectively are stretched with the same force. They will have the potential energy in ratio (1) 4:1 (2) 1:4 (3) 2:1 (4) 1:2

In young's double slit experiment, interference pattern is observed on the screen L distance away from slits, distance between centre of two consecutive bright fringes is x and slits separation is d, then the wavelength of light will be –

′n′ transparent slabs of refractive index 1.5 each having thickness 1 cm,2 cm,...n cm are arranged one over the other. A point object is seen through this combination from top with perpendicular light. If the shift of the object by combination is 5 cm. Then the value of ′n′ is

13. Force between two charges placed at a distance r in vacuum is F .Now a dielectric slab of K =4 is inserted between them .its thickness is r/2.The new force between the charges

A river is flowing with a speed of 1 km/hr. A swimmer wants to go to point ‘C’ starting from ‘A’. He swims with a speed of 5 km/hr at an angle θ w.r.t the river flow. If AB =BC =400 m, what is the value of θ?

If acceleration is uniform then it's value in mathematical expression is?

A mass of block 8 kg is attached by a rope with other block of mass 4 kg as shown in the figure. Find the acceleration of COM of the system. (Neglect friction everywhere and neglect the mass of the rope and pulley)

The threshold frequency of a metal corresponds to the wavelength of x nm. In two separate experiments A and B, incident radiations of wavelengths 1/2x nm and 1/4x nm respectively are used. The ratio of kinetic energy of the released electrons in experiment B to that in experiment A is-

The number of particles n crossing a unit area perpendicular to the x – axis in unit time can be written as n = p (n2−n1)(x2−x1) where n1andn2 are number of particles per unit volume between length (x2−x1). The dimensions of p are

33.The resistance of the ammeter and the voltmeter connected in the circuit shown in the figure are 0.8 ohm and 98 ohm respectively.what r the readings in ammeter and voltmeter?

An aircraft with a wing span of 40 m flies with a speed of 1080 km-hr−1 in the eastward direction at a constant altitude in the Northern Hemisphere, where the vertical component of earth's magnetic field is 1.75×10−5 T. Find the emf that develops across the tips of the wings.

A current is made of two components, a DC component of 3A and AC component of 4√2sinωtA. The reading of the hot wire ammeter is

6.How the magnitude of electromagnetic force changes on changing the medium?

Man A takes 5 seconds to stop a 1 kg ball thrown at 10 m/s at him. Man B takes the same time to return the same ball coming at him at 5 m/s exactly in the opposite direction with same speed. Who applied more force?

31. For the formation of 3.65g of HCl gas what volume of hydrogen gas and chlorine gas are required at NTP CONDITION?

A metallic spherical shell of inner radius R1 and outer radius R2 is shown in figure below. A charge is placed at the centre of the spherical cavity. The surface charge density on the inner surface is:

18.The ratio of distancesdescribed by a body falling freely from rest in the last second of its motion to that in last but one second of its motion is 5:4 find the toval time taken by the body to reach the ground

An electric dipole consisting of two opposite charges of 2×10−6C separated by a distance of 3cm is placed in an electric field of 2×105N/C. The maximum torque on the dipole will be

How can we determine the range of frequency over which a signal can be transmitted ?

What is the de Broglie wavelength of an electron with a kinetic energy of 120 eV?(Given: h=6.63×10−34 Js,me=9.11×10−31 kg,e=1.6×10−19 coulomb

What is the stopping potential when the metal with work function 0.6 eV is illuminated with the light of 2 eV

If a current I given by I0 sin(ωt−π2) flows in an ac circuit across which an ac potential of E=E0sin ω t has been applied, then the power consumption P in the circuit will be

What is the value of iota the power iota?

Smalles unit of charge is -Frankline -Faraday - Coulomb -e.m.u

If the surface area of each surface of a plate is A and separation between two adjacent plates is d. Calculate the charge given by the battery.

The equiconvex lens of glass refractive index 1.5 of focal length 10 cm in air is silvered on one side it will behave lik

If the gas expands against vaccum then the work done is zero .How

A machine gun has mass of 20kg.It fires 25g bullet at the rate of 600 bullets per minutes with a speed of 200 m/s.Calculate recoil velocity of the gun and force required to keep the gun in position.

how light ray gets bend towards the normal through converging len

∫(t√t+√tt2)dt is equal to

A body is thrown horizontally from the top of a tower of height 5 m. It touches the ground at a distance of 10 m from the foot of the tower. The initial velocity of the body is (g = 10 ms−2)

In a system of two concentric spherical conducting shells charge q is given to both inner and outer shells as shown in figure. Inner shell is connected to earth by a switch. Find the amount of heat produced when switch is closed.

Two identical bar magnets are held perpendicular to each other with a certain separation, as shown below. The area around the magnets is divided into four zones.Given that there is a neutral point, it is located in

Two small balls each having a positive charge q coulomb is suspended by two insulated strings of equal length l meter from a hook fixed to a stand.the whole setup is taken in a satellite into space where there is no gravity. The angle between tension in each string will be _.

A parallel plate capacitor is charged by connecting its plates to the terminals of a battery. The battery is then disconnected and a glass plate is interposed between the plates of the capacitor, then

FIND THE WORK DONE BY CONSERVATIVE FORCE WHEN PARTICLE MOVES FROM A(d,d)&B(2d,2d).u=ax^2+b

In the circuit shown in the figure, E=50 V, R=250 Ω, L=20 mH and C=0.5 μF. The switch is closed for a long time and no voltage is measured across the capacitor. After the switch is opened, the voltage across the capacitor reaches a maximum value of V(Integer only)

A point moves along an arc of a circle of radius R.Its velocity depends on the distance covered (s) as V=as, where a is constant.Find the angle X between the vector of the total acceleration and the vector of the velocity as a function of s

What will be the escape speed from a planethaving volume 27 times that of earth and the samemean density as that of the earth? (Take escapespeed from the earth 11.2 km/s, earth and planetare perfectly sphere)

the velocity of a particle is given by v=at^2+bt+c,where v is in m/s, time t is in second abd a b,c are the cons†an ts. the unit of the quantity abc is

Q 13/15 An astronaut inside an earth satelliteexperiences weightlessness because He is falling freely towards the centre ofearth everytime No external force is acting on him He is far away from the earth's surface Gravitational pull by the earth is consumed toprovide centripetal force

Two mirrors placed at an angle of θ produces 5 images of an object placed symmetrically between the mirrors. The number of images produced when θ is decreased by 30∘ will be

A car travelled the first one-third of the distance d at a speed of 20 kmh−1, the second one-third of the distance at a speed of 40 kmh−1 and the last one-third of the distance at a speed of 120 kmh−1. Determine the average speed of the car.

A capacitor and a coil in series are connected to a 6 volt ac source. By varying the frequency of the source, maximum current of 600 mA is observed. If the same coil is now connected to a cell of emf 6 volt and internal resistance of 2 Ω, the current through it will be :

How to represent wave equation

A particle is projected from ground with a speed of v0=80 m/s at angle of 60∘ with horizontal. During first 3 seconds average velocity is →v &amp; acceleration is →a &amp; displacement is −→Δr, then (→a×→v).−→Δr equals to

A particle is projected from ground with a speed of v0=80 m/s at angle of 60∘ with horizontal. During first 3 seconds average velocity is →v & acceleration is →a & displacement is −→Δr, then (→a×→v).−→Δr equals to