50278 + Interview Questions in Physics

1.	Acylindrical capacitor has two co-axial cylinders of length 15 cm andradii 1.5 cm and 1.4 cm. The outer cylinder is earthed and the innercylinder is given a charge of 3.5 µC. Determine the capacitanceof the system and the potential of the inner cylinder. Neglect endeffects (i.e., bending of field lines at the ends).
Answer» A cylindrical capacitor has two co-axial cylinders of length 15 cm and radii 1.5 cm and 1.4 cm. The outer cylinder is earthed and the inner cylinder is given a charge of 3.5 µC. Determine the capacitance of the system and the potential of the inner cylinder. Neglect end effects (i.e., bending of field lines at the ends).

Discussion

2.	Two points A and B on a disc have velocities v1 and v2 at some moment. Their directions make angles 60o and 30o respectively with the line of separation as shown in the figure. The angular velocity of the disc is:
Answer» Two points $A$ and $B$ on a disc have velocities $v_{1}$ and $v_{2}$ at some moment. Their directions make angles $60^{o}$ and $30^{o}$ respectively with the line of separation as shown in the figure. The angular velocity of the disc is:

Discussion

3.	A cube of metal is subjected to a hydrostatic pressure of 4 GPa. The percentage change in the length of the side of the cube is close to :(Given bulk modulus of metal, B=8×1010 Pa)
Answer» A cube of metal is subjected to a hydrostatic pressure of $4 GPa$ . The percentage change in the length of the side of the cube is close to :(Given bulk modulus of metal, $B = 8 \times 10^{10} Pa)$

Discussion

4.	Light of wavelength 2000 ˙A falls on a metallic surface, for which a stopping potential of 2 V is required. Find the wavelength of the incident radiation for which the stopping potential required is 5 V.
Answer» Light of wavelength $2000 ˙ A$ falls on a metallic surface, for which a stopping potential of $2 V$ is required. Find the wavelength of the incident radiation for which the stopping potential required is $5 V$ .

Discussion

5.	A uniform semi circular cylinder of radius r and weight w is displaced from its equilibrium position slightly by an angle thetha.find the period of small oscillations if it is known that the semi cylinder rolls with out slipping for small displacement s
Answer» A uniform semi circular cylinder of radius r and weight w is displaced from its equilibrium position slightly by an angle thetha.find the period of small oscillations if it is known that the semi cylinder rolls with out slipping for small displacement s

Discussion

6.	Suppose the amplitude of a simple pendulum having a bob of mass m is θ0. Find the tension in the string when the bob is at its extreme position.
Answer» Suppose the amplitude of a simple pendulum having a bob of mass m is $θ_{0} .$ Find the tension in the string when the bob is at its extreme position.

Discussion

7.	A charge q is projected into a uniform electric field E, work done when it suffers a displacement Y along the field direction is
Answer» A charge $q$ is projected into a uniform electric field $E$ , work done when it suffers a displacement $Y$ along the field direction is

Discussion

8.	a point charge +q and is maintained at an altitude h over a large conducting uncharged plate . the electric force of interaction between the charge and the plate is better described as force proportional to what
Answer» a point charge +q and is maintained at an altitude h over a large conducting uncharged plate . the electric force of interaction between the charge and the plate is better described as force proportional to what

Discussion

9.	20: An object is placed at 21 cm in front of a concave mirror of radius of curvature 20 cm. A glassslab of thickness 3 cm and refractive index 1.5 is placed close to the mirror in the space betweenthe object and the mirror. Find the position of the final image.
Answer» 20: An object is placed at 21 cm in front of a concave mirror of radius of curvature 20 cm. A glassslab of thickness 3 cm and refractive index 1.5 is placed close to the mirror in the space betweenthe object and the mirror. Find the position of the final image.

Discussion

10.	Ashort bar magnet of magnetic moment m = 0.32 JT−1is placed in a uniform magnetic field of 0.15 T. If the bar is freeto rotate in the plane of the field, which orientation wouldcorrespond to its (a) stable, and (b) unstable equilibrium? What isthe potential energy of the magnet in each case?
Answer» A short bar magnet of magnetic moment m = 0.32 J T⁻¹ is placed in a uniform magnetic field of 0.15 T. If the bar is free to rotate in the plane of the field, which orientation would correspond to its (a) stable, and (b) unstable equilibrium? What is the potential energy of the magnet in each case?

Discussion

11.	A beam of electrons is moving with constant velocity in a region having electric and magnetic fields of strength 20 Vm−1 and 0.5 T at right angles to the direction of motion of the electrons. What is the velocity of the electrons ?
Answer» A beam of electrons is moving with constant velocity in a region having electric and magnetic fields of strength $20 {Vm}^{- 1}$ and $0.5 T$ at right angles to the direction of motion of the electrons. What is the velocity of the electrons ?

Discussion

12.	Minimum number of capacitors of 2microfarad each required to obtain a capacitance of 5microfarad will be?
Answer» Minimum number of capacitors of 2microfarad each required to obtain a capacitance of 5microfarad will be?

Discussion

13.	How to find number of oscillations when to me period is given?
Answer» How to find number of oscillations when to me period is given?

Discussion

14.	find the locus of all the points where the resu†an t electric field vector will always have a bearing of 45 deg. with the axis of a short dipole
Answer» find the locus of all the points where the resu†an t electric field vector will always have a bearing of 45 deg. with the axis of a short dipole

Discussion

15.	Two bulbs one of 50watt and another of 25 watt are connected in series to the mains. Find the ratio of the currents through them.
Answer» Two bulbs one of 50watt and another of 25 watt are connected in series to the mains. Find the ratio of the currents through them.

Discussion

16.	Find net Electric Field at the centre of the diameter of semicircle ring by two different methods?
Answer» Find net Electric Field at the centre of the diameter of semicircle ring by two different methods?

Discussion

17.	If ∫1x√1−x3dx=alog∣∣∣√1−x3−1√1−x3+1∣∣∣+b, then 6a is equal to(log is taken on natural base ′e′ and C is constant of integration)
Answer» If $\int \frac{1}{x \sqrt{1 - x^{3}}} d x = a log ∣ ∣ ∣ \frac{\sqrt{1 - x^{3}} - 1}{\sqrt{1 - x^{3}} + 1} ∣ ∣ ∣ + b,$ then $6 a$ is equal to $(log is taken on natural base^{'} e^{'}$ and $C$ is constant of integration)

Discussion

18.	Which of the following is a lever?
Answer» Which of the following is a lever?

Discussion

19.	A wagon weighing 1000 kg is moving with a velocity 50 km/h on smooth horizontal rails. A mass of 250 kg isdropped into it. The velocity with which it moves now is
Answer» A wagon weighing 1000 kg is moving with a velocity 50 km/h on smooth horizontal rails. A mass of 250 kg isdropped into it. The velocity with which it moves now is

Discussion

20.	A satellite in a circular orbit around the earth has kinetic energy EK . Minimum amount of energy that has to be given to satellite so that it escapes from the earth’s gravitational influence, is
Answer» A satellite in a circular orbit around the earth has kinetic energy $E_{K}$ . Minimum amount of energy that has to be given to satellite so that it escapes from the earth’s gravitational influence, is

Discussion

21.	A proton of energy 8 eV is moving in a circular path in a uniform magnetic field. The energy of an α - particle moving in the same magnetic field and along the same path will be
Answer» A proton of energy $8 eV$ is moving in a circular path in a uniform magnetic field. The energy of an $α$ - particle moving in the same magnetic field and along the same path will be

Discussion

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

Discussion

23.	A small plane perfectly reflecting mirror of area A and mass M is hanging vertically with the help of a massless string of length l. Light of intensity I is incident horizontally on it. Find the angle made by the string with the vertical.
Answer» A small plane perfectly reflecting mirror of area $A$ and mass $M$ is hanging vertically with the help of a massless string of length $l$ . Light of intensity $I$ is incident horizontally on it. Find the angle made by the string with the vertical.

Discussion

24.	If the velocity-time graph is a straight line parallel to time axis for a body, then the body is having _____.
Answer» If the velocity-time graph is a straight line parallel to time axis for a body, then the body is having _____.

Discussion

25.	If f:R→R is defined by f(x)=xx2+1find f(f(2)).
Answer» If $f : R \to R$ is defined by $f (x) = \frac{x}{x^{2} + 1}$ find $f (f (2))$ .

Discussion

26.	57.an electric kettle has a resistance of of 160 ohm what current will be flow when it is connected to a 240v supply?
Answer» 57.an electric kettle has a resistance of of 160 ohm what current will be flow when it is connected to a 240v supply?

Discussion

27.	137.A 5 H inductor is placed in series with a 10 ohm resistor. An emf of 5V being suddenly applied to the combination. Using these values prove that principle of conservation of energy, for time equal to the time constant
Answer» 137.A 5 H inductor is placed in series with a 10 ohm resistor. An emf of 5V being suddenly applied to the combination. Using these values prove that principle of conservation of energy, for time equal to the time constant

Discussion

28.	Why reflecting type telescope is preferred over refracting type
Answer» Why reflecting type telescope is preferred over refracting type

Discussion

29.	A MACHINE GUN FIRES 'n' BULLETS PER SECOND EACH OF MASS 'm'. IF THE SPEED OF EACH BULLET IS 'v',THEN THE FORCE OF RECOIL ISA) mng B) mnvC) mnvg D) mnv/g
Answer» A MACHINE GUN FIRES 'n' BULLETS PER SECOND EACH OF MASS 'm'. IF THE SPEED OF EACH BULLET IS 'v',THEN THE FORCE OF RECOIL IS A) mng B) mnv C) mnvg D) mnv/g

Discussion

30.	The position x of a particle moving along x-axis varies with time T as shown in figureThe average acceleration of a particle in time interval t is equal to zero is equal to 8
Answer» The position x of a particle moving along x-axis varies with time T as shown in figureThe average acceleration of a particle in time interval t is equal to zero is equal to 8

Discussion

31.	In the following figures (i) and (ii), all the surfaces are smooth, string is massless and pulley is ideal. The mass of rope is m in both the cases. If T1 and T2 be the tensions at the mid points of the ropes in figure (i) and figure (ii) respectively, then T1:T2 is
Answer» In the following figures (i) and (ii), all the surfaces are smooth, string is massless and pulley is ideal. The mass of rope is $m$ in both the cases. If $T_{1}$ and $T_{2}$ be the tensions at the mid points of the ropes in figure (i) and figure (ii) respectively, then $T_{1} : T_{2}$ is

Discussion

32.	28.Three particles of each mass 'm' are located at three vertices of an equilateral triangle of side a . If system is revolving in a uniform circle due to their mutual force of attraction , then angular velocity of each particle is?
Answer» 28.Three particles of each mass 'm' are located at three vertices of an equilateral triangle of side a . If system is revolving in a uniform circle due to their mutual force of attraction , then angular velocity of each particle is?

Discussion

33.	{ †ext { Two spherical conductor } B †ext { and } C †ext { having equal radii and carrying equal charges repel } } { †ext { each other with a force } F †ext { when kept apart at some distance. A third spherical } } { †ext { conductor having same radius as that of } B †ext { but uncharged brought in contact with } B †ext { , } } { †ext { then brought in contact with } C †ext { and finally removed away from both. The new force of } } { †ext { repulsion, between } B †ext { and } c †ext { is }
Answer» { †ext { Two spherical conductor } B †ext { and } C †ext { having equal radii and carrying equal charges repel } } { †ext { each other with a force } F †ext { when kept apart at some distance. A third spherical } } { †ext { conductor having same radius as that of } B †ext { but uncharged brought in contact with } B †ext { , } } { †ext { then brought in contact with } C †ext { and finally removed away from both. The new force of } } { †ext { repulsion, between } B †ext { and } c †ext { is }

Discussion

34.	in CsF if lattice energy is 750 KJ/mol and heat of hydration of Cs^+1 is 300KJ/mol then what should be heat of hydration of F^-1? (1) 300KJ/mol (2) 250KJ/mol (3) 500KJ/mol (4) 400KJ/mol
Answer» in CsF if lattice energy is 750 KJ/mol and heat of hydration of Cs^+1 is 300KJ/mol then what should be heat of hydration of F^-1? (1) 300KJ/mol (2) 250KJ/mol (3) 500KJ/mol (4) 400KJ/mol

Discussion

35.	projectile is projected at an angle θ, with speed u, it makes an angle of 45° with horizontal at half of maximum height. The angle of projection θ is
Answer» projectile is projected at an angle θ, with speed u, it makes an angle of 45° with horizontal at half of maximum height. The angle of projection θ is

Discussion

36.	50 A horizontal force 10 N is necessary to just holda block stationary against a wall. The coefficient offriction between the block and the wall is 0.2, theweight of the block is(1) 20 N(2) 50 N(3) 100 N(4) 2 N
Answer» 50 A horizontal force 10 N is necessary to just holda block stationary against a wall. The coefficient offriction between the block and the wall is 0.2, theweight of the block is(1) 20 N(2) 50 N(3) 100 N(4) 2 N

Discussion

37.	When a tuning fork vibrates with 1.0 m or 1.05 m long wire of a sonometer, 5 beats per second are produced in each case. What will be the frequency of the tuning fork?a) 200 b)210 c)205 d)195
Answer» When a tuning fork vibrates with 1.0 m or 1.05 m long wire of a sonometer, 5 beats per second are produced in each case. What will be the frequency of the tuning fork?a) 200 b)210 c)205 d)195

Discussion

38.	A us dropped from height 125m,B is thrown up with speed 25m/s from the ground .With what speed of B when they meet
Answer» A us dropped from height 125m,B is thrown up with speed 25m/s from the ground .With what speed of B when they meet

Discussion

39.	18 In NaCl the centres of 2 nearest like charged ions are present at a distance of
Answer» 18 In NaCl the centres of 2 nearest like charged ions are present at a distance of

Discussion

40.	An incompressible liquid flows through a horizontal tube as shown in the following fig. Then the velocity v of the fluid is
Answer» An incompressible liquid flows through a horizontal tube as shown in the following fig. Then the velocity v of the fluid is

40.

An incompressible liquid flows through a horizontal tube as shown in the following fig. Then the velocity v of the fluid is

Answer»

An incompressible liquid flows through a horizontal tube as shown in the following fig. Then the velocity v of the fluid is

Discussion

41.	A single degree of freedom spring-mass system is subjected to a harmonic force of constant ampitude. For an excitation frequency of √3km, the ratio of the amplitude of steady state response to the static deflection of the spring is
Answer» A single degree of freedom spring-mass system is subjected to a harmonic force of constant ampitude. For an excitation frequency of $\sqrt{\frac{3 k}{m}}$ , the ratio of the amplitude of steady state response to the static deflection of the spring is

Discussion

42.	A piece of gold with a cavity present in it weighs 10 g in air and 9 g in water. What is the volume of the cavity?[Density of gold =19.3 g/cm3]
Answer» A piece of gold with a cavity present in it weighs $10 g$ in air and $9 g$ in water. What is the volume of the cavity? $[$ Density of gold $= 19.3 {g/cm}^{3}]$

Discussion

43.	In an LCR series circuit with a resistor of 100ohm is connected to an AC voltage Vrms = 220V and w= 300rad/sec .When capacitor is removed the current lags by 60^°.When inductors is removed ,the current leads by 60^° .What is the average power dissipated in the circuit ?
Answer» In an LCR series circuit with a resistor of 100ohm is connected to an AC voltage Vrms = 220V and w= 300rad/sec .When capacitor is removed the current lags by 60^°.When inductors is removed ,the current leads by 60^° .What is the average power dissipated in the circuit ?

Discussion

44.	Calculate the gravitational potential at the centre of base of a solid hemisphere of mass M and radius R.
Answer» Calculate the gravitational potential at the centre of base of a solid hemisphere of mass $M$ and radius $R$ .

Discussion

45.	A plane mirror is placed on an incline with inclination 20°. An incident ray gets reflected as shown below. What is the angle of reflection?
Answer» A plane mirror is placed on an incline with inclination $20 °$ . An incident ray gets reflected as shown below. What is the angle of reflection?

Discussion

46.	EXPLAIN AVERAGE VELOCITY DEEPLY
Answer» EXPLAIN AVERAGE VELOCITY DEEPLY

Discussion

47.	As a cat rubs its back along a carpet, it acquires a charge of +8.2×10−7 C. How many electrons did it lose to the carpet?
Answer» As a cat rubs its back along a carpet, it acquires a charge of $+ 8.2 \times 10^{- 7} C$ . How many electrons did it lose to the carpet?

Discussion

48.	A car is moving along a straight road with a uniform acceleration. It passes through two points P and Q seperated by a distance with velocity 30 km/hr and 40 km/hr respectively. The velocity of the car midway between P and Q is a) 33.3 km/hr b) 20√2 km/hr c) 25√2km/hr d) 35 km/hr.
Answer» A car is moving along a straight road with a uniform acceleration. It passes through two points P and Q seperated by a distance with velocity 30 km/hr and 40 km/hr respectively. The velocity of the car midway between P and Q is a) 33.3 km/hr b) 20 $\sqrt{2}$ km/hr c) 25 $\sqrt{2}$ km/hr d) 35 km/hr.

Discussion

49.	What is the minimum distance from real object to a real image in a concave mirror?
Answer» What is the minimum distance from real object to a real image in a concave mirror?

Discussion

50.	Nuclei with same number of protons but different number of neutrons are called ___. Nuclei with same number of neutrons but different atomic number are called ___. Nuclei with same mass number are called ___.
Answer» Nuclei with same number of protons but different number of neutrons are called ___. Nuclei with same number of neutrons but different atomic number are called ___. Nuclei with same mass number are called ___.

50.

Nuclei with same number of protons but different number of neutrons are called _. Nuclei with same number of neutrons but different atomic number are called _. Nuclei with same mass number are called ___.

Answer»

Nuclei with same number of protons but different number of neutrons are called ___.

Nuclei with same number of neutrons but different atomic number are called ___.

Nuclei with same mass number are called ___.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Two points A and B on a disc have velocities v1 and v2 at some moment. Their directions make angles 60o and 30o respectively with the line of separation as shown in the figure. The angular velocity of the disc is:

A cube of metal is subjected to a hydrostatic pressure of 4 GPa. The percentage change in the length of the side of the cube is close to :(Given bulk modulus of metal, B=8×1010 Pa)

Light of wavelength 2000 ˙A falls on a metallic surface, for which a stopping potential of 2 V is required. Find the wavelength of the incident radiation for which the stopping potential required is 5 V.

A uniform semi circular cylinder of radius r and weight w is displaced from its equilibrium position slightly by an angle thetha.find the period of small oscillations if it is known that the semi cylinder rolls with out slipping for small displacement s

Suppose the amplitude of a simple pendulum having a bob of mass m is θ0. Find the tension in the string when the bob is at its extreme position.

A charge q is projected into a uniform electric field E, work done when it suffers a displacement Y along the field direction is

a point charge +q and is maintained at an altitude h over a large conducting uncharged plate . the electric force of interaction between the charge and the plate is better described as force proportional to what

20: An object is placed at 21 cm in front of a concave mirror of radius of curvature 20 cm. A glassslab of thickness 3 cm and refractive index 1.5 is placed close to the mirror in the space betweenthe object and the mirror. Find the position of the final image.

Ashort bar magnet of magnetic moment m = 0.32 JT−1is placed in a uniform magnetic field of 0.15 T. If the bar is freeto rotate in the plane of the field, which orientation wouldcorrespond to its (a) stable, and (b) unstable equilibrium? What isthe potential energy of the magnet in each case?

A beam of electrons is moving with constant velocity in a region having electric and magnetic fields of strength 20 Vm−1 and 0.5 T at right angles to the direction of motion of the electrons. What is the velocity of the electrons ?

Minimum number of capacitors of 2microfarad each required to obtain a capacitance of 5microfarad will be?

How to find number of oscillations when to me period is given?

find the locus of all the points where the resu†an t electric field vector will always have a bearing of 45 deg. with the axis of a short dipole

Two bulbs one of 50watt and another of 25 watt are connected in series to the mains. Find the ratio of the currents through them.

Find net Electric Field at the centre of the diameter of semicircle ring by two different methods?

If ∫1x√1−x3dx=alog∣∣∣√1−x3−1√1−x3+1∣∣∣+b, then 6a is equal to(log is taken on natural base ′e′ and C is constant of integration)

Which of the following is a lever?

A wagon weighing 1000 kg is moving with a velocity 50 km/h on smooth horizontal rails. A mass of 250 kg isdropped into it. The velocity with which it moves now is

A satellite in a circular orbit around the earth has kinetic energy EK . Minimum amount of energy that has to be given to satellite so that it escapes from the earth’s gravitational influence, is

A proton of energy 8 eV is moving in a circular path in a uniform magnetic field. The energy of an α - particle moving in the same magnetic field and along the same path will be

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

A small plane perfectly reflecting mirror of area A and mass M is hanging vertically with the help of a massless string of length l. Light of intensity I is incident horizontally on it. Find the angle made by the string with the vertical.

If the velocity-time graph is a straight line parallel to time axis for a body, then the body is having _____.

If f:R→R is defined by f(x)=xx2+1find f(f(2)).

57.an electric kettle has a resistance of of 160 ohm what current will be flow when it is connected to a 240v supply?

137.A 5 H inductor is placed in series with a 10 ohm resistor. An emf of 5V being suddenly applied to the combination. Using these values prove that principle of conservation of energy, for time equal to the time constant

Why reflecting type telescope is preferred over refracting type

A MACHINE GUN FIRES 'n' BULLETS PER SECOND EACH OF MASS 'm'. IF THE SPEED OF EACH BULLET IS 'v',THEN THE FORCE OF RECOIL ISA) mng B) mnvC) mnvg D) mnv/g

The position x of a particle moving along x-axis varies with time T as shown in figureThe average acceleration of a particle in time interval t is equal to zero is equal to 8

In the following figures (i) and (ii), all the surfaces are smooth, string is massless and pulley is ideal. The mass of rope is m in both the cases. If T1 and T2 be the tensions at the mid points of the ropes in figure (i) and figure (ii) respectively, then T1:T2 is

28.Three particles of each mass 'm' are located at three vertices of an equilateral triangle of side a . If system is revolving in a uniform circle due to their mutual force of attraction , then angular velocity of each particle is?

in CsF if lattice energy is 750 KJ/mol and heat of hydration of Cs^+1 is 300KJ/mol then what should be heat of hydration of F^-1? (1) 300KJ/mol (2) 250KJ/mol (3) 500KJ/mol (4) 400KJ/mol

projectile is projected at an angle θ, with speed u, it makes an angle of 45° with horizontal at half of maximum height. The angle of projection θ is

50 A horizontal force 10 N is necessary to just holda block stationary against a wall. The coefficient offriction between the block and the wall is 0.2, theweight of the block is(1) 20 N(2) 50 N(3) 100 N(4) 2 N

When a tuning fork vibrates with 1.0 m or 1.05 m long wire of a sonometer, 5 beats per second are produced in each case. What will be the frequency of the tuning fork?a) 200 b)210 c)205 d)195

A us dropped from height 125m,B is thrown up with speed 25m/s from the ground .With what speed of B when they meet

18 In NaCl the centres of 2 nearest like charged ions are present at a distance of

An incompressible liquid flows through a horizontal tube as shown in the following fig. Then the velocity v of the fluid is

A single degree of freedom spring-mass system is subjected to a harmonic force of constant ampitude. For an excitation frequency of √3km, the ratio of the amplitude of steady state response to the static deflection of the spring is

A piece of gold with a cavity present in it weighs 10 g in air and 9 g in water. What is the volume of the cavity?[Density of gold =19.3 g/cm3]

In an LCR series circuit with a resistor of 100ohm is connected to an AC voltage Vrms = 220V and w= 300rad/sec .When capacitor is removed the current lags by 60^°.When inductors is removed ,the current leads by 60^° .What is the average power dissipated in the circuit ?

Calculate the gravitational potential at the centre of base of a solid hemisphere of mass M and radius R.

A plane mirror is placed on an incline with inclination 20°. An incident ray gets reflected as shown below. What is the angle of reflection?

EXPLAIN AVERAGE VELOCITY DEEPLY

As a cat rubs its back along a carpet, it acquires a charge of +8.2×10−7 C. How many electrons did it lose to the carpet?

A car is moving along a straight road with a uniform acceleration. It passes through two points P and Q seperated by a distance with velocity 30 km/hr and 40 km/hr respectively. The velocity of the car midway between P and Q is a) 33.3 km/hr b) 20√2 km/hr c) 25√2km/hr d) 35 km/hr.

What is the minimum distance from real object to a real image in a concave mirror?

Nuclei with same number of protons but different number of neutrons are called ___. Nuclei with same number of neutrons but different atomic number are called ___. Nuclei with same mass number are called ___.

Nuclei with same number of protons but different number of neutrons are called _. Nuclei with same number of neutrons but different atomic number are called _. Nuclei with same mass number are called ___.