50278 + Interview Questions in Physics

1.	a particle is thrown with any velocity vertically upward the dis†an ce travelled by the body in the first second of its decent is
Answer» a particle is thrown with any velocity vertically upward the dis†an ce travelled by the body in the first second of its decent is

Discussion

2.	Which of the following electric field lines configuration is correct?
Answer» Which of the following electric field lines configuration is correct?

Discussion

3.	One conducting U tube can slide inside another as shown in figure, maintaining electrical contacts between the tubes. The magnetic field B is perpendicular to the plane of the figure. If each tube moves towards the other at a constant sped v then the emf induced in the circuit in terms of B, l and v where l is the width of each tube, will be
Answer» One conducting U tube can slide inside another as shown in figure, maintaining electrical contacts between the tubes. The magnetic field B is perpendicular to the plane of the figure. If each tube moves towards the other at a constant sped v then the emf induced in the circuit in terms of B, l and v where l is the width of each tube, will be

Discussion

4.	What is lead is it a non metal Does it have any special features
Answer» What is lead is it a non metal Does it have any special features

4.

What is lead is it a non metal Does it have any special features

Answer»

What is lead is it a non metal

Does it have any special features

Discussion

5.	The position of a particle performing SHM is given by {x=0.1\operatorname{sin(100t+π/3) where x is in m and time t is in second. The maximum speed of the particle is
Answer» The position of a particle performing SHM is given by {x=0.1\operatorname{sin(100t+π/3) where x is in m and time t is in second. The maximum speed of the particle is

Discussion

6.	In the given nuclear reaction, A, B, C, D, E represents 92U238α⟶ BThAβ⟶ DPaCE⟶ 92U234
Answer» In the given nuclear reaction, A, B, C, D, E represents $_{92} U^{238} α ⟶_{B} T h^{A} β ⟶_{D} P a^{C} E ⟶_{92} U^{234}$

Discussion

7.	A bullet of mass 10 g is fired from a rifle with a velocity of 800 m/s. After passing through a mud wall 180 cm thick, the velocity drops to 100 m/s. Find the average force exerted by the wall.
Answer» A bullet of mass 10 g is fired from a rifle with a velocity of 800 m/s. After passing through a mud wall 180 cm thick, the velocity drops to 100 m/s. Find the average force exerted by the wall.

Discussion

8.	In a Y- Y connected 3-phase induction motor, rotor current is zero while motor is at standstill. The winding factor of stator winding is 5 and the ratio of turns on stator and rotor is 4. If the ratio of effective turns of stator per phase and rotor per phase is 2, the winding factor of rotor winding will be ____10
Answer» In a Y- Y connected 3-phase induction motor, rotor current is zero while motor is at standstill. The winding factor of stator winding is 5 and the ratio of turns on stator and rotor is 4. If the ratio of effective turns of stator per phase and rotor per phase is 2, the winding factor of rotor winding will be ____ 10

Discussion

9.	A boy throws a stone in the air, its height at any time is given by h=−3t2+12t−4 m. The maximum height (in m) attained by the stone is
Answer» A boy throws a stone in the air, its height at any time is given by $h = - 3 t^{2} + 12 t - 4 m$ . The maximum height (in $m$ ) attained by the stone is

Discussion

10.	In an elastic solid, the work done by an external force to produce strain is 800 J. If the external force is removed, then the elastic potential energy of the solid will be -
Answer» In an elastic solid, the work done by an external force to produce strain is $800 J$ . If the external force is removed, then the elastic potential energy of the solid will be -

Discussion

11.	A particle starts with a velocity of 2 ms−1 and moves in a straight line with a retardation of 0.1 ms−2. The first time at which the particle is 15 m from the starting point is
Answer» A particle starts with a velocity of $2 {ms}^{- 1}$ and moves in a straight line with a retardation of $0.1 {ms}^{- 2}$ . The first time at which the particle is $15 m$ from the starting point is

Discussion

12.	a body starting from rest has an acceleration of 5m/s2.Calculate dis†an ce travelled by it in 4th secon
Answer» a body starting from rest has an acceleration of 5m/s2.Calculate dis†an ce travelled by it in 4th secon

Discussion

13.	The potential energy of a particle of mass 5kg 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 (2^ i+3^ j) m/s. The magnitude of acceleration of particle is
Answer» The potential energy of a particle of mass 5kg 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 (2^ i+3^ j) m/s. The magnitude of acceleration of particle is

Discussion

14.	A 3-phase synchronous generator of 1000 kVA, 0.8 p.f lag, 6.6 kV star connected cylindrical rotor of negligible resistance and synchronous reactance of 0.8 p.u. The synchronizing coefficient is ______kW/elec.degrees.32.23
Answer» A 3-phase synchronous generator of 1000 kVA, 0.8 p.f lag, 6.6 kV star connected cylindrical rotor of negligible resistance and synchronous reactance of 0.8 p.u. The synchronizing coefficient is ______kW/elec.degrees. 32.23

Discussion

15.	Time period of thin bar magnet of vibration magnetometer is 'T'. If it cuts into two equal parts in these time period of each fashion. (1)T,T (2)T,T/2 (3)T/2,T (4)T/2,T/2
Answer» Time period of thin bar magnet of vibration magnetometer is 'T'. If it cuts into two equal parts in these time period of each fashion. (1)T,T (2)T,T/2 (3)T/2,T (4)T/2,T/2

Discussion

16.	Consider the circuit shown in the figure below:The feedback factor ′β′ for the above circuit is equal to (Assume the op-amp to be ideal).
Answer» Consider the circuit shown in the figure below: The feedback factor $^{'} β^{'}$ for the above circuit is equal to (Assume the op-amp to be ideal).

Discussion

17.	The drift velocity of the free electrons in a conducting wire carrying a current ′i′ is v. If in a wire of the same metal, but of double the radius and the current to be 2i, then the drift velocity of the electrons will be ?
Answer» The drift velocity of the free electrons in a conducting wire carrying a current $^{'} i^{'}$ is $v$ . If in a wire of the same metal, but of double the radius and the current to be $2 i,$ then the drift velocity of the electrons will be ?

Discussion

18.	give the five difference of ideal or real gas
Answer» give the five difference of ideal or real gas

Discussion

19.	Two equal point charges A and B are R distanceapart. A third point charge placed on theperpendicular bisector at a distance d from thecentre will experience maximum electrostatic forcewhen(1)2 2Rd  (2)2Rd (3) d R 2 (4) d  2 2R
Answer» Two equal point charges A and B are R distance apart. A third point charge placed on the perpendicular bisector at a distance d from the centre will experience maximum electrostatic force when (1) 2 2 R d  (2) 2 R d  (3) d R 2 (4) d  2 2R

Discussion

20.	How is the voltmeter connected with respect to the points where you want to measure the potential difference?
Answer» How is the voltmeter connected with respect to the points where you want to measure the potential difference?

Discussion

21.	A force F acting on a body depends on its displacement x as F∝x−13. The power delivered by F will depend on displacement as
Answer» A force $F$ acting on a body depends on its displacement $x$ as $F \propto x^{\frac{- 1}{3}}$ . The power delivered by $F$ will depend on displacement as

Discussion

22.	The difference between the greatest and least possible values of y=(sin−1x)2+(cos−1x)2 is
Answer» The difference between the greatest and least possible values of $y = (s i n^{- 1} x)^{2} + (c o s^{- 1} x)^{2}$ is

Discussion

23.	For a particular string (given material and radius), what are the factors on which its frequency of vibration depends?
Answer» For a particular string (given material and radius), what are the factors on which its frequency of vibration depends?

Discussion

24.	A capacitor of 2 μF is charged as shown in the diagram. When the switch S is turned to position 2, the percentage of its stored energy dissipated is :
Answer» A capacitor of $2 μ F$ is charged as shown in the diagram. When the switch $S$ is turned to position 2, the percentage of its stored energy dissipated is :

Discussion

25.	The message signal m(t) shown in the figure below is applied to an FM modulator. If the maximum frequency deviation of the resultant FM signal is 3 kHz, then the frequency sensitivity of the FM modulator will be _________kHz/V.1.5
Answer» The message signal m(t) shown in the figure below is applied to an FM modulator. If the maximum frequency deviation of the resultant FM signal is 3 kHz, then the frequency sensitivity of the FM modulator will be _________kHz/V. 1.5

Discussion

26.	Two particles are oscillating along two close parallel straight lines side by side, with the same frequency and amplitudes. They pass each other, moving in opposite directions when their displacement is half tof the amplitude. The mean positions of the two O particles lie on a straight line perpendicular to the paths of the two particles. The phase difference is s
Answer» Two particles are oscillating along two close parallel straight lines side by side, with the same frequency and amplitudes. They pass each other, moving in opposite directions when their displacement is half tof the amplitude. The mean positions of the two O particles lie on a straight line perpendicular to the paths of the two particles. The phase difference is s

Discussion

27.	A point object at O and a diverging lens is shown in the figure given below. Find the position of final image formed from P.
Answer» A point object at $O$ and a diverging lens is shown in the figure given below. Find the position of final image formed from $P$ .

Discussion

28.	How does direction affect displacement and also how does it affect velocity?
Answer» How does direction affect displacement and also how does it affect velocity?

Discussion

29.	Resistance of 200 ohm and capacitance of 15 microfarad is connected to a 220 volt and 50 hertz AC source in series. Calculate 1. Current in the circuit 2. Voltage across resistance 3. Phase difference
Answer» Resistance of 200 ohm and capacitance of 15 microfarad is connected to a 220 volt and 50 hertz AC source in series. Calculate 1. Current in the circuit 2. Voltage across resistance 3. Phase difference

Discussion

30.	A toroid made up of a circular core has inner circumference 30π cm and 2400 turns. The relative permeability of the material is 1000. What is the cross-sectional area of the core when a current of 0.75 A passes through the winding, a magnetic field of strength 2 T is produced at its mean radius ?
Answer» A toroid made up of a circular core has inner circumference $30 π cm$ and $2400$ turns. The relative permeability of the material is $1000$ . What is the cross-sectional area of the core when a current of $0.75 A$ passes through the winding, a magnetic field of strength $2 T$ is produced at its mean radius ?

Discussion

31.	In the circuit shown in figure, a potential difference of 60 V is applied between a and b. The potential difference between the points c and d ( in Volts) is
Answer» In the circuit shown in figure, a potential difference of $60 V$ is applied between a and b. The potential difference between the points c and d ( in Volts) is

Discussion

32.	In a Young’s double-slit experiment, the slits are separated by0.28 mm and the screen is placed 1.4 m away. The distance betweenthe central bright fringe and the fourth bright fringe is measured to be 1.2 cm. Determine the wavelength of light used in theexperiment.
Answer» In a Young’s double-slit experiment, the slits are separated by0.28 mm and the screen is placed 1.4 m away. The distance betweenthe central bright fringe and the fourth bright fringe is measured to be 1.2 cm. Determine the wavelength of light used in theexperiment.

Discussion

33.	A soap bubble of radius r1 is placed on another soap bubble of radius r2(r1<r2). The radius R of the soap film separating the two bubbles is:
Answer» A soap bubble of radius $r_{1}$ is placed on another soap bubble of radius $r_{2} (r_{1} < r_{2})$ . The radius $R$ of the soap film separating the two bubbles is:

Discussion

34.	A bullet fired at an angle of 30° with the horizontal hits the ground 3.0 km away. By adjusting its angle of projection, can one hope to hit a target 5.0 km away ? Assume the muzzle speed to be fixed, and neglect air resistance.
Answer» A bullet fired at an angle of 30° with the horizontal hits the ground 3.0 km away. By adjusting its angle of projection, can one hope to hit a target 5.0 km away ? Assume the muzzle speed to be fixed, and neglect air resistance.

Discussion

35.	Question 18Is it possible that an object is in the state of accelerated motion due to external force acting on it, but no work is being done by the force. Explain it with an example.
Answer» Question 18 Is it possible that an object is in the state of accelerated motion due to external force acting on it, but no work is being done by the force. Explain it with an example.

Discussion

36.	if the force outside the earth varies as r^n , where r is the distance of the body from centre of the earth , then the value of n will be1)-12)-23)14)2
Answer» if the force outside the earth varies as r^n , where r is the distance of the body from centre of the earth , then the value of n will be 1)-1 2)-2 3)1 4)2

Discussion

37.	A simple pendulum of length 1 m is oscillating with an angular frequency of 10 rad/s. The support of the pendulum starts oscillating up and down with a small angular frequency of 1 rad/s and an amplitude of 10−2 m. The relative change in the angular frequency of the pendulum is best given by:
Answer» A simple pendulum of length $1 m$ is oscillating with an angular frequency of $10 rad/s .$ The support of the pendulum starts oscillating up and down with a small angular frequency of $1 rad/s$ and an amplitude of $10^{- 2} m$ . The relative change in the angular frequency of the pendulum is best given by:

Discussion

38.	in an L-C circuit consisting of 20 mH inductor and 0.1 microfarad capacitor, the maximum current in the circuit is 0.15 A. The maximum current in the circuit is 0.15 A. The maximum voltage across the capacitor is approximately : a-60 V b-67 V
Answer» in an L-C circuit consisting of 20 mH inductor and 0.1 microfarad capacitor, the maximum current in the circuit is 0.15 A. The maximum current in the circuit is 0.15 A. The maximum voltage across the capacitor is approximately : a-60 V b-67 V

Discussion

39.	The components of force F parallel and perpendicular to the incline are
Answer» The components of force $F$ parallel and perpendicular to the incline are

Discussion

40.	21.Whether the following statement is true or false- 'For two plates of equal thickness in series the equivalent thermal conductivity is given by 1/K = 1/K1 + 1/K2'
Answer» 21.Whether the following statement is true or false- 'For two plates of equal thickness in series the equivalent thermal conductivity is given by 1/K = 1/K1 + 1/K2'

Discussion

41.	The ratio of the refractive index of red light to blue light in air is [CPMT 1978]
Answer» The ratio of the refractive index of red light to blue light in air is [CPMT 1978]

Discussion

42.	What are CFLs? Why are CFLs preferred over electric bulbs.
Answer» What are CFLs? Why are CFLs preferred over electric bulbs.

Discussion

43.	A wooden rod of a uniform cross-section and of length 120 cm is hinged at the bottom of the tank, which is filled with water to a height of 40 cm. In the equilibrium position, the rod makes an angle of 60∘ with the vertical. The centre of buoyancy is located on the rod at a distance (from the hinge) of
Answer» A wooden rod of a uniform cross-section and of length $120 cm$ is hinged at the bottom of the tank, which is filled with water to a height of $40 cm$ . In the equilibrium position, the rod makes an angle of $60^{\circ}$ with the vertical. The centre of buoyancy is located on the rod at a distance (from the hinge) of

Discussion

44.	209 Two stones are projected upward simultaneously. One ascended 35.1 m more than the other and reached the ground 2 s later. Find the velocities of projection of the stones. (g = 9.8 m/s2)
Answer» 209 Two stones are projected upward simultaneously. One ascended 35.1 m more than the other and reached the ground 2 s later. Find the velocities of projection of the stones. (g = 9.8 m/s2)

Discussion

45.	A ring of mass M and radius R is rotating with angular speed about a fixed vertical axis passing through its centre O with two point masses each of mass M8 at rest at O. These masses can move radially outwards along two massless rods fixed on the ring as shown in the figure. At some instant the angular speed of system is 89ω and one of the masses is at a distance of 35R from O. At this instant the distance of the other mass from O is
Answer» A ring of mass $M$ and radius $R$ is rotating with angular speed about a fixed vertical axis passing through its centre $O$ with two point masses each of mass $\frac{M}{8}$ at rest at $O$ . These masses can move radially outwards along two massless rods fixed on the ring as shown in the figure. At some instant the angular speed of system is $\frac{8}{9} ω$ and one of the masses is at a distance of $\frac{3}{5} R$ from $O$ . At this instant the distance of the other mass from $O$ is

Discussion

46.	Consider two blocks of masses 5 kg and 10 kg as shown connected by a massless spring. A force of 100 N acts on 10 kg mass as shown. At a certain instant, the acceleration of 5 kg mass is 12 ms−2. Find the acceleration of 10 kg mass.
Answer» Consider two blocks of masses $5 k g$ and $10 k g$ as shown connected by a massless spring. A force of $100 N$ acts on $10 k g$ mass as shown. At a certain instant, the acceleration of $5 k g$ mass is $12 m s^{- 2}$ . Find the acceleration of $10 k g$ mass.

Discussion

47.	Figure shows a man standing stationary with respect to a horizontal conveyor belt. If the coefficient of static friction between the man's shoes and the belt is 0.2, up to what acceleration of the belt can the man continue to be stationary relative to the belt? (Mass of the man = 65 kg). ___
Answer» Figure shows a man standing stationary with respect to a horizontal conveyor belt. If the coefficient of static friction between the man's shoes and the belt is 0.2, up to what acceleration of the belt can the man continue to be stationary relative to the belt? (Mass of the man = 65 kg). ___

47.

Figure shows a man standing stationary with respect to a horizontal conveyor belt. If the coefficient of static friction between the man's shoes and the belt is 0.2, up to what acceleration of the belt can the man continue to be stationary relative to the belt? (Mass of the man = 65 kg). ___

Answer»

Figure shows a man standing stationary with respect to a horizontal conveyor belt. If the coefficient of static friction between the man's shoes and the belt is 0.2, up to what acceleration of the belt can the man continue to be stationary relative to the belt? (Mass of the man = 65 kg).

___

Discussion

48.	23.) A particle having a mass of 10-2 kg carries a chargeof 5 x 10-8C. The particle is given an initialhorizontal velocity of 105 ms-1 in the presence ofelectric field E and magnetic field B. To keep theparticle moving in a horizontal direction, it isnecessary that(a) B should be perpendicular to the direction ofvelocity and E should be along the direction ofvelocity(b) Both B and E should be along the direction ofvelocity(c) Both B and are mutually perpendicular andperpendicular to the direction of velocityB should be along the direction of velocity andE should be perpendicular to the direction ofvelocity(d)Which one of the following pairs of statements ispossible?(1) (a) and (c)(3) (b) and (c)AIPMT (Mains)-2010\rbrack(2) (c) and (d)(4) (b) and (d)
Answer» 23.) A particle having a mass of 10-2 kg carries a chargeof 5 x 10-8C. The particle is given an initialhorizontal velocity of 105 ms-1 in the presence ofelectric field E and magnetic field B. To keep theparticle moving in a horizontal direction, it isnecessary that(a) B should be perpendicular to the direction ofvelocity and E should be along the direction ofvelocity(b) Both B and E should be along the direction ofvelocity(c) Both B and are mutually perpendicular andperpendicular to the direction of velocityB should be along the direction of velocity andE should be perpendicular to the direction ofvelocity(d)Which one of the following pairs of statements ispossible?(1) (a) and (c)(3) (b) and (c)AIPMT (Mains)-2010\rbrack(2) (c) and (d)(4) (b) and (d)

Discussion

49.	A spherical solid ball of volume V is made of a material of density ‘s1’. It is falling through a liquid of density ‘s2’ (s2< s1) assume that the liquid applies a viscous force on the ball that is proportional to the square of its speed ‘v’, Fviscous = K · v2, The terminal speed of the ball is
Answer» A spherical solid ball of volume V is made of a material of density ‘s $_{1}$ ’. It is falling through a liquid of density ‘s $_{2}$ ’ (s $_{2}$ < s $_{1}$ ) assume that the liquid applies a viscous force on the ball that is proportional to the square of its speed ‘v’, F_viscous = K · v $^{2}$ , The terminal speed of the ball is

Discussion

50.	A ball is dropped from the top of a tower. The distance travelled by the ball in the last second is 40 m. Find the height of the tower
Answer» A ball is dropped from the top of a tower. The distance travelled by the ball in the last second is 40 m. Find the height of the tower

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

a particle is thrown with any velocity vertically upward the dis†an ce travelled by the body in the first second of its decent is

Which of the following electric field lines configuration is correct?

W​​​​​​hat is lead is it a non metal Does it have any special features ​​​ ​​​​​​

The position of a particle performing SHM is given by {x=0.1\operatorname{sin(100t+π/3) where x is in m and time t is in second. The maximum speed of the particle is

In the given nuclear reaction, A, B, C, D, E represents 92U238α⟶ BThAβ⟶ DPaCE⟶ 92U234

A bullet of mass 10 g is fired from a rifle with a velocity of 800 m/s. After passing through a mud wall 180 cm thick, the velocity drops to 100 m/s. Find the average force exerted by the wall.

A boy throws a stone in the air, its height at any time is given by h=−3t2+12t−4 m. The maximum height (in m) attained by the stone is

In an elastic solid, the work done by an external force to produce strain is 800 J. If the external force is removed, then the elastic potential energy of the solid will be -

A particle starts with a velocity of 2 ms−1 and moves in a straight line with a retardation of 0.1 ms−2. The first time at which the particle is 15 m from the starting point is

a body starting from rest has an acceleration of 5m/s2.Calculate dis†an ce travelled by it in 4th secon

The potential energy of a particle of mass 5kg 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 (2^ i+3^ j) m/s. The magnitude of acceleration of particle is

A 3-phase synchronous generator of 1000 kVA, 0.8 p.f lag, 6.6 kV star connected cylindrical rotor of negligible resistance and synchronous reactance of 0.8 p.u. The synchronizing coefficient is ______kW/elec.degrees.32.23

Time period of thin bar magnet of vibration magnetometer is 'T'. If it cuts into two equal parts in these time period of each fashion. (1)T,T (2)T,T/2 (3)T/2,T (4)T/2,T/2

Consider the circuit shown in the figure below:The feedback factor ′β′ for the above circuit is equal to (Assume the op-amp to be ideal).

The drift velocity of the free electrons in a conducting wire carrying a current ′i′ is v. If in a wire of the same metal, but of double the radius and the current to be 2i, then the drift velocity of the electrons will be ?

give the five difference of ideal or real gas

Two equal point charges A and B are R distanceapart. A third point charge placed on theperpendicular bisector at a distance d from thecentre will experience maximum electrostatic forcewhen(1)2 2Rd  (2)2Rd (3) d R 2 (4) d  2 2R

How is the voltmeter connected with respect to the points where you want to measure the potential difference?

A force F acting on a body depends on its displacement x as F∝x−13. The power delivered by F will depend on displacement as

The difference between the greatest and least possible values of y=(sin−1x)2+(cos−1x)2 is

For a particular string (given material and radius), what are the factors on which its frequency of vibration depends?

A capacitor of 2 μF is charged as shown in the diagram. When the switch S is turned to position 2, the percentage of its stored energy dissipated is :

The message signal m(t) shown in the figure below is applied to an FM modulator. If the maximum frequency deviation of the resultant FM signal is 3 kHz, then the frequency sensitivity of the FM modulator will be _________kHz/V.1.5

A point object at O and a diverging lens is shown in the figure given below. Find the position of final image formed from P.

How does direction affect displacement and also how does it affect velocity?

Resistance of 200 ohm and capacitance of 15 microfarad is connected to a 220 volt and 50 hertz AC source in series. Calculate 1. Current in the circuit 2. Voltage across resistance 3. Phase difference

A toroid made up of a circular core has inner circumference 30π cm and 2400 turns. The relative permeability of the material is 1000. What is the cross-sectional area of the core when a current of 0.75 A passes through the winding, a magnetic field of strength 2 T is produced at its mean radius ?

In the circuit shown in figure, a potential difference of 60 V is applied between a and b. The potential difference between the points c and d ( in Volts) is

In a Young’s double-slit experiment, the slits are separated by0.28 mm and the screen is placed 1.4 m away. The distance betweenthe central bright fringe and the fourth bright fringe is measured to be 1.2 cm. Determine the wavelength of light used in theexperiment.

A soap bubble of radius r1 is placed on another soap bubble of radius r2(r1&lt;r2). The radius R of the soap film separating the two bubbles is:

A bullet fired at an angle of 30° with the horizontal hits the ground 3.0 km away. By adjusting its angle of projection, can one hope to hit a target 5.0 km away ? Assume the muzzle speed to be fixed, and neglect air resistance.

Question 18Is it possible that an object is in the state of accelerated motion due to external force acting on it, but no work is being done by the force. Explain it with an example.

if the force outside the earth varies as r^n , where r is the distance of the body from centre of the earth , then the value of n will be1)-12)-23)14)2

A simple pendulum of length 1 m is oscillating with an angular frequency of 10 rad/s. The support of the pendulum starts oscillating up and down with a small angular frequency of 1 rad/s and an amplitude of 10−2 m. The relative change in the angular frequency of the pendulum is best given by:

in an L-C circuit consisting of 20 mH inductor and 0.1 microfarad capacitor, the maximum current in the circuit is 0.15 A. The maximum current in the circuit is 0.15 A. The maximum voltage across the capacitor is approximately : a-60 V b-67 V

The components of force F parallel and perpendicular to the incline are

21.Whether the following statement is true or false- 'For two plates of equal thickness in series the equivalent thermal conductivity is given by 1/K = 1/K1 + 1/K2'

The ratio of the refractive index of red light to blue light in air is [CPMT 1978]

What are CFLs? Why are CFLs preferred over electric bulbs.

209 Two stones are projected upward simultaneously. One ascended 35.1 m more than the other and reached the ground 2 s later. Find the velocities of projection of the stones. (g = 9.8 m/s2)

Consider two blocks of masses 5 kg and 10 kg as shown connected by a massless spring. A force of 100 N acts on 10 kg mass as shown. At a certain instant, the acceleration of 5 kg mass is 12 ms−2. Find the acceleration of 10 kg mass.

Figure shows a man standing stationary with respect to a horizontal conveyor belt. If the coefficient of static friction between the man's shoes and the belt is 0.2, up to what acceleration of the belt can the man continue to be stationary relative to the belt? (Mass of the man = 65 kg). ___

A ball is dropped from the top of a tower. The distance travelled by the ball in the last second is 40 m. Find the height of the tower

What is lead is it a non metal Does it have any special features

A soap bubble of radius r1 is placed on another soap bubble of radius r2(r1<r2). The radius R of the soap film separating the two bubbles is: