50278 + Interview Questions in Physics

1.	A particle of mass 10 kg is thrown at an angle of 37∘ with horizontal with an initial velocity of 5 m/s. The kinetic energy of the projectile when it just reaches the ground will be
Answer» A particle of mass $10 kg$ is thrown at an angle of $37^{\circ}$ with horizontal with an initial velocity of $5 m/s$ . The kinetic energy of the projectile when it just reaches the ground will be

Discussion

2.	A 100 kg car is moving with a maximum velocity of 9 m/s across a circular track of radius 30 m. The maximum force of friction between the road and the car is
Answer» A 100 kg car is moving with a maximum velocity of 9 m/s across a circular track of radius 30 m. The maximum force of friction between the road and the car is

Discussion

3.	A vernier caliper has 1 mm marks on the main scale. It has 20 equal divisions on the vernier scale which match with 16 main scale divisions. For this vernier caliper, the least count is
Answer» A vernier caliper has $1 mm$ marks on the main scale. It has $20$ equal divisions on the vernier scale which match with $16$ main scale divisions. For this vernier caliper, the least count is

Discussion

4.	39.What will be speed of the image formed when both plane mirror and object are moving towards each other with a velocity v ?
Answer» 39.What will be speed of the image formed when both plane mirror and object are moving towards each other with a velocity v ?

Discussion

5.	Component of vector →A=3^i+2^j+^k perpendicular to vector →B=^i−2^j is
Answer» Component of vector $\to A = 3^i + 2^j +^k$ perpendicular to vector $\to B =^i - 2^j$ is

Discussion

6.	A bracket plate connected to a column flange transmits a load of 120 kN as shown in the figure. The maximum force for which the bolts should be designed is kN169.34
Answer» A bracket plate connected to a column flange transmits a load of 120 kN as shown in the figure. The maximum force for which the bolts should be designed is kN 169.34

6.

A bracket plate connected to a column flange transmits a load of 120 kN as shown in the figure. The maximum force for which the bolts should be designed is kN169.34

Answer»

A bracket plate connected to a column flange transmits a load of 120 kN as shown in the figure. The maximum force for which the bolts should be designed is kN

169.34

Discussion

7.	A student measures the thickness of a human hair by looking at it through a microscope of magnification 100. He makes 20 observations and finds that the average width of the hair is 3.5 mm. What is the estimate on the thickness of the hair: (a) 0.0035 mm (b) 0.035 mm (c)0.01 mm (d) 0.7 mm
Answer» A student measures the thickness of a human hair by looking at it through a microscope of magnification 100. He makes 20 observations and finds that the average width of the hair is 3.5 mm. What is the estimate on the thickness of the hair: (a) 0.0035 mm (b) 0.035 mm (c)0.01 mm (d) 0.7 mm

7.

A student measures the thickness of a human hair by looking at it through a microscope of magnification 100. He makes 20 observations and finds that the average width of the hair is 3.5 mm. What is the estimate on the thickness of the hair: (a) 0.0035 mm (b) 0.035 mm (c)0.01 mm (d) 0.7 mm

Answer»

A student measures the thickness of a human hair by looking at it through a microscope of magnification 100. He makes 20 observations and finds that the average width of the hair is 3.5 mm. What is the estimate on the thickness of the hair:

(a) 0.0035 mm (b) 0.035 mm

(c)0.01 mm (d) 0.7 mm

Discussion

8.	12. 1g mixture of cuprous oxide and cupric oxide was quantitatively reduced to 0.839g of metallic copper.What was the weight of cupric oxide in the original sample?(Cu=63.5,O=16)
Answer» 12. 1g mixture of cuprous oxide and cupric oxide was quantitatively reduced to 0.839g of metallic copper.What was the weight of cupric oxide in the original sample?(Cu=63.5,O=16)

Discussion

9.	what is magnetic field due to long solid cylineder?
Answer» what is magnetic field due to long solid cylineder?

Discussion

10.	Under which of the following conditions is the law PV = RT obeyed most closely by a real gas
Answer» Under which of the following conditions is the law PV = RT obeyed most closely by a real gas

Discussion

11.	The magnetic field of a cylindrical magnet that has a pole-face radius 2.8 cm can be varied sinusoidally between minimum value of 14.8 T and maximum value of 15.2 T at a frequency of 50/π Hz. The cross-section of magnetic field is created by the magnet is shown. At a radial distance of 2 cm from the axis, the amplitude of electric field induced by the magnetic field variation (in mN/C) is (Integer only)
Answer» The magnetic field of a cylindrical magnet that has a pole-face radius $2.8 cm$ can be varied sinusoidally between minimum value of $14.8 T$ and maximum value of $15.2 T$ at a frequency of $50 / π Hz$ . The cross-section of magnetic field is created by the magnet is shown. At a radial distance of $2 cm$ from the axis, the amplitude of electric field induced by the magnetic field variation $(in mN/C)$ is (Integer only)

Discussion

12.	A bullet fired into a fixed target loses half of its velocity after penetrating 3 cm. How much further will it penetrate before coming to rest assuming that it faces constant resistance to motion?
Answer» A bullet fired into a fixed target loses half of its velocity after penetrating $3 c m$ . How much further will it penetrate before coming to rest assuming that it faces constant resistance to motion?

Discussion

13.	The total energy of the body executing S.H.M. is E . Then the kinetic energy, when the displacement is half of the amplitude, is :
Answer» The total energy of the body executing S.H.M. is E . Then the kinetic energy, when the displacement is half of the amplitude, is :

Discussion

14.	A body slides on a frictionless surfaces A to B of the velocity of ball at A is 5 m/s. Its velocity at B is (g=10 m/s2)
Answer» A body slides on a frictionless surfaces $A$ to $B$ of the velocity of ball at $A$ is $5 m/s$ . Its velocity at $B$ is $(g = 10 {m/s}^{2})$

Discussion

15.	When the light source is kept 20 cm away from a photo cell, stopping potential 0.6 V is obtained. When source is kept 40 cm away, the stopping potential will be
Answer» When the light source is kept 20 cm away from a photo cell, stopping potential 0.6 V is obtained. When source is kept 40 cm away, the stopping potential will be

Discussion

16.	Use the formula lmT = 0.29 cmK to obtain the characteristictemperature ranges for different parts of the electromagneticspectrum. What do the numbers that you obtain tell you?
Answer» Use the formula lmT = 0.29 cmK to obtain the characteristictemperature ranges for different parts of the electromagneticspectrum. What do the numbers that you obtain tell you?

Discussion

17.	A 80 ohm Galvanometer shows a deflection of 1 division per mA. It has 50 divisions on its scale. If a shunt of 2.5 ohm be attached to the galvanometer, what maximum current will this galvanometer measure?
Answer» A 80 ohm Galvanometer shows a deflection of 1 division per mA. It has 50 divisions on its scale. If a shunt of 2.5 ohm be attached to the galvanometer, what maximum current will this galvanometer measure?

Discussion

18.	In an experimental setup shown belowA block of mass m=10 kg is hanging. If mass of string is 0.01 kg and length of string is 1 m. Find the number of loop formed if a standing wave is set on the string. Frequency of the wave is given as 50 Hz.
Answer» In an experimental setup shown below A block of mass $m = 10 kg$ is hanging. If mass of string is $0.01 kg$ and length of string is $1 m$ . Find the number of loop formed if a standing wave is set on the string. Frequency of the wave is given as $50 Hz$ .

Discussion

19.	The equation of a wave travelling on a string stretched along the X-axis is given by y=A e−(xa+tT)2 Where is the maximum of the pulse located at t = T?
Answer» The equation of a wave travelling on a string stretched along the X-axis is given by $y = A e^{- {(\frac{x}{a} + \frac{t}{T})}^{2}}$ Where is the maximum of the pulse located at t = T?

19.

The equation of a wave travelling on a string stretched along the X-axis is given by y=A e−(xa+tT)2 Where is the maximum of the pulse located at t = T?

Answer»

The equation of a wave travelling on a string stretched along the X-axis is given by $y = A e^{- {(\frac{x}{a} + \frac{t}{T})}^{2}}$

Where is the maximum of the pulse located at t = T?

Discussion

20.	the dis†an ce of a particle moving on a circle of radius 12m measured from a fixed point on the circle is given by s=2t^{3 }the ratio of †an gential to centripetal acceleration is
Answer» the dis†an ce of a particle moving on a circle of radius 12m measured from a fixed point on the circle is given by s=2t^{3 }the ratio of †an gential to centripetal acceleration is

Discussion

21.	If in a p−n junction, a square input signal of 10 V is applied, as shown, then the output across RL will be
Answer» If in a $p - n$ junction, a square input signal of $10 V$ is applied, as shown, then the output across $R_{L}$ will be

Discussion

22.	Integrate (1÷√x) dx from 0 to infinity
Answer» Integrate (1÷√x) dx from 0 to infinity

Discussion

23.	A metal rod completes a circuit as shown in the figure. The circuit is normal to magnetic field B=0.15 T. If the resistance of the circuit is 3 Ω, then the force required to move the rod with a constant velocity of 2 m/s will be
Answer» A metal rod completes a circuit as shown in the figure. The circuit is normal to magnetic field $B = 0.15 T$ . If the resistance of the circuit is $3 Ω$ , then the force required to move the rod with a constant velocity of $2 m/s$ will be

Discussion

24.	A milliammeter of range 10 mA has a coil of resistance 1Ω. To use it as voltmeter of range 10 volt, the resistance that must be connected in series with it will be
Answer» A milliammeter of range 10 mA has a coil of resistance $1 Ω$ . To use it as voltmeter of range 10 volt, the resistance that must be connected in series with it will be

Discussion

25.	8.A stone is dropped from a certain height h Speed of the particle averaged over total distance is
Answer» 8.A stone is dropped from a certain height h Speed of the particle averaged over total distance is

Discussion

26.	Two straight horizontal parallel wires are carrying the same current in same direction, d is the distance between the wires. You are provided with a small freely suspended magnetic needle. At which of the following positions will the orientation of the needle be independent of the magnitude of current in the wires?
Answer» Two straight horizontal parallel wires are carrying the same current in same direction, d is the distance between the wires. You are provided with a small freely suspended magnetic needle. At which of the following positions will the orientation of the needle be independent of the magnitude of current in the wires?

Discussion

27.	A 800 kg block is supported by a structure shown in figure, if rod is light, then force at hinge joint makes angle θ with horizontal
Answer» A 800 kg block is supported by a structure shown in figure, if rod is light, then force at hinge joint makes angle $θ$ with horizontal

Discussion

28.	The curves a, b, c and d shows the variation between the applied potential difference (V) and the photoelectric current (i) at two different intensities of light (I1>I2). Which of the following figure is correct?
Answer» The curves a, b, c and d shows the variation between the applied potential difference $(V)$ and the photoelectric current $(i)$ at two different intensities of light $(I_{1} > I_{2})$ . Which of the following figure is correct?

Discussion

29.	A resistor of 8 Ω is connected in parallel with another resistor R2. The resultant resistance of the combination is 4 Ω. Then, the value of resistor R2 is:
Answer» A resistor of 8 Ω is connected in parallel with another resistor R2. The resultant resistance of the combination is 4 Ω. Then, the value of resistor R2 is:

Discussion

30.	1: What is binomial theorem ?? 2: And in an "eg: momentum increase by 100% find % change in kinetic energy . 'K=p²/2m' "so here , it is given that 'p = 2p' (p+100/100p) how??
Answer» 1: What is binomial theorem ?? 2: And in an "eg: momentum increase by 100% find % change in kinetic energy . 'K=p²/2m' "so here , it is given that 'p = 2p' (p+100/100p) how??

Discussion

31.	55.What would be the change in the tangential velocity of an electron , if it remains in same orbit and electronic charge is doubled ?
Answer» 55.What would be the change in the tangential velocity of an electron , if it remains in same orbit and electronic charge is doubled ?

Discussion

32.	A current of 1 A is flowing on the sides of an equilateral triangle of side 4.5 ×10 -2 m. The magnetic field at the centre of the triangle will be : (1) 2 ×10 -5 Wb/m2 (2) Zero (3) 8 ×10 -5 Wb/m2 (4) 4 ×10 -5 Wb/m2
Answer» A current of 1 A is flowing on the sides of an equilateral triangle of side 4.5 ×10 -2 m. The magnetic field at the centre of the triangle will be : (1) 2 ×10 -5 Wb/m2 (2) Zero (3) 8 ×10 -5 Wb/m2 (4) 4 ×10 -5 Wb/m2

Discussion

33.	A thermometer is graduated in mm. It registers - 3mm when the bulb of thermometer is in pure melting ice and 22mm when the thermometer is in steam at a pressure of one atm. The temperature in ∘C when the thermometer registers 13mm is
Answer» A thermometer is graduated in mm. It registers - 3mm when the bulb of thermometer is in pure melting ice and 22mm when the thermometer is in steam at a pressure of one atm. The temperature in $^{\circ} C$ when the thermometer registers 13mm is

Discussion

34.	the range of value of m for inverted and diminished image formed by a concave mirror for a real objectHere what is range
Answer» the range of value of m for inverted and diminished image formed by a concave mirror for a real object Here what is range

Discussion

35.	A body is projected horizontally from the top of a tower with an initial velocity of 18 ms−1. It hits the ground at an angle of 45∘ with horizontal. What is the vertical component of velocity when the body strikes the ground?
Answer» A body is projected horizontally from the top of a tower with an initial velocity of $18 {ms}^{- 1}$ . It hits the ground at an angle of $45^{\circ}$ with horizontal. What is the vertical component of velocity when the body strikes the ground?

Discussion

36.	A particle moves in the plane xy with constant acceleration w directed along the negative y axis . the equation of motion of the particle has the form y= ax- bx2,where a and b are positive constants.find the velocity of the particle at the origin of coordinates.
Answer» A particle moves in the plane xy with constant acceleration w directed along the negative y axis . the equation of motion of the particle has the form y= ax- bx2,where a and b are positive constants.find the velocity of the particle at the origin of coordinates.

Discussion

37.	A charge of 8 mC is located at the origin. Calculate the work done in taking a small charge of –2 × 10–9 C from a point P (0, 0, 3 cm) to a point Q (0, 4 cm, 0), via a point R (0, 6 cm, 9 cm).
Answer» A charge of 8 mC is located at the origin. Calculate the work done in taking a small charge of –2 × 10–9 C from a point P (0, 0, 3 cm) to a point Q (0, 4 cm, 0), via a point R (0, 6 cm, 9 cm).

Discussion

38.	Force of interaction between two co-axial short electric dipoles whose centres are R distance apart varies as
Answer» Force of interaction between two co-axial short electric dipoles whose centres are R distance apart varies as

Discussion

39.	Acceleration due to gravity on moon is 16 of the acceleration due to gravity on earth.If the ratio of densities of earth (ρm) and moon (ρe) is (ρeρm)=53, then radius of moon Rm in terms of Re will be
Answer» Acceleration due to gravity on moon is $\frac{1}{6}$ of the acceleration due to gravity on earth.If the ratio of densities of earth ( $ρ_{m}$ ) and moon ( $ρ_{e}$ ) is $(\frac{ρ_{e}}{ρ_{m}}) = \frac{5}{3}$ , then radius of moon $R_{m}$ in terms of $R_{e}$ will be

Discussion

40.	Justify the position of hydrogen in the periodic table.
Answer» Justify the position of hydrogen in the periodic table.

Discussion

41.	A particle moves in a circle of radius 4 m clock wise at constant speed of 2 m s−1. If ^x and ^y are unit vectors along x and y axes, respectively, the centripetal acceleration of the particle at the instant half between PQ is given by
Answer» A particle moves in a circle of radius 4 m clock wise at constant speed of 2 m $s^{- 1}$ . If $^x$ and $^y$ are unit vectors along x and y axes, respectively, the centripetal acceleration of the particle at the instant half between PQ is given by

41.

A particle moves in a circle of radius 4 m clock wise at constant speed of 2 m s−1. If ^x and ^y are unit vectors along x and y axes, respectively, the centripetal acceleration of the particle at the instant half between PQ is given by

Answer»

A particle moves in a circle of radius 4 m clock wise at constant speed of 2 m $s^{- 1}$ . If $^x$ and $^y$ are unit vectors along x and y axes, respectively, the centripetal acceleration of the particle at the instant half between PQ is given by

Discussion

42.	A thin rod of mass 0.9 kg and length 1 m is suspended at rest from one end so that it can freely oscillates in the vertical plane. A particle of move 80 m/s hits the rod at its bottom most point and stickes to it (see figure). The angular speed (in rad/s) of the rod immeditely after the collision will be____
Answer» A thin rod of mass $0.9 kg$ and length $1 m$ is suspended at rest from one end so that it can freely oscillates in the vertical plane. A particle of move $80 m/s$ hits the rod at its bottom most point and stickes to it (see figure). The angular speed (in $rad/s$ ) of the rod immeditely after the collision will be____

Discussion

43.	An AC circuit consists of a 220 Ω resistance and a 0.7 H choke in series. Find the power (in W) absorbed from 220 V and 50 Hz source connected in series with the circuit elements (upto two decimal places)
Answer» An $A C$ circuit consists of a $220 Ω$ resistance and a $0.7 H$ choke in series. Find the power (in $W$ ) absorbed from $220 V$ and $50 Hz$ source connected in series with the circuit elements (upto two decimal places)

Discussion

44.	Select the correct option which represent Newton's equation of viscosity.
Answer» Select the correct option which represent Newton's equation of viscosity.

Discussion

45.	93. Two balls are projected with same speed u at angles alpha n beta with horizontal. Their path shown in figure. Ratio of their time of flight is
Answer» 93. Two balls are projected with same speed u at angles alpha n beta with horizontal. Their path shown in figure. Ratio of their time of flight is

Discussion

46.	Two coaxial discs, having moments of inertia I1 and I1/2 are rotating with respective angular velocities ω1 and ω1/2, about their common axis. They are brought in contact with each other, and thereafter they rotate with a common angular velocity. If Ef and Ei, are the final and initial total energies, then (Ef−Ei) is
Answer» Two coaxial discs, having moments of inertia $I_{1}$ and $I_{1} / 2$ are rotating with respective angular velocities $ω_{1}$ and $ω_{1} / 2$ , about their common axis. They are brought in contact with each other, and thereafter they rotate with a common angular velocity. If $E_{f}$ and $E_{i}$ , are the final and initial total energies, then $(E_{f} - E_{i})$ is

Discussion

47.	In a given circuit as shown, the two input waveforms A and B are applied simultaneously. The resultant waveform Y is
Answer» In a given circuit as shown, the two input waveforms A and B are applied simultaneously. The resultant waveform Y is

Discussion

48.	Unit of Impulse per unit area is same as that ofViscositySurface tension ForceBulk modulus
Answer» Unit of Impulse per unit area is same as that of Viscosity Surface tension Force Bulk modulus

Discussion

49.	A particle executes SHM with amplitude a and time period T. The displacement of the particle from the mean position when its speed is half of maximum speed is √xa2. The value of x is _______.
Answer» A particle executes SHM with amplitude $a$ and time period $T$ . The displacement of the particle from the mean position when its speed is half of maximum speed is $\frac{\sqrt{x} a}{2}$ . The value of $x$ is _______.

Discussion

50.	a galvanometer of resistance, G is shunted by a resistance S ohm. to keep the main current in the circuit unchanged the resistance to be put in series with the galvanometer is
Answer» a galvanometer of resistance, G is shunted by a resistance S ohm. to keep the main current in the circuit unchanged the resistance to be put in series with the galvanometer is

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

A particle of mass 10 kg is thrown at an angle of 37∘ with horizontal with an initial velocity of 5 m/s. The kinetic energy of the projectile when it just reaches the ground will be

A 100 kg car is moving with a maximum velocity of 9 m/s across a circular track of radius 30 m. The maximum force of friction between the road and the car is

A vernier caliper has 1 mm marks on the main scale. It has 20 equal divisions on the vernier scale which match with 16 main scale divisions. For this vernier caliper, the least count is

39.What will be speed of the image formed when both plane mirror and object are moving towards each other with a velocity v ?

Component of vector →A=3^i+2^j+^k perpendicular to vector →B=^i−2^j is

A bracket plate connected to a column flange transmits a load of 120 kN as shown in the figure. The maximum force for which the bolts should be designed is kN169.34

A student measures the thickness of a human hair by looking at it through a microscope of magnification 100. He makes 20 observations and finds that the average width of the hair is 3.5 mm. What is the estimate on the thickness of the hair: (a) 0.0035 mm (b) 0.035 mm (c)0.01 mm (d) 0.7 mm

12. 1g mixture of cuprous oxide and cupric oxide was quantitatively reduced to 0.839g of metallic copper.What was the weight of cupric oxide in the original sample?(Cu=63.5,O=16)

what is magnetic field due to long solid cylineder?

Under which of the following conditions is the law PV = RT obeyed most closely by a real gas

A bullet fired into a fixed target loses half of its velocity after penetrating 3 cm. How much further will it penetrate before coming to rest assuming that it faces constant resistance to motion?

The total energy of the body executing S.H.M. is E . Then the kinetic energy, when the displacement is half of the amplitude, is :

A body slides on a frictionless surfaces A to B of the velocity of ball at A is 5 m/s. Its velocity at B is (g=10 m/s2)

When the light source is kept 20 cm away from a photo cell, stopping potential 0.6 V is obtained. When source is kept 40 cm away, the stopping potential will be

Use the formula lmT = 0.29 cmK to obtain the characteristictemperature ranges for different parts of the electromagneticspectrum. What do the numbers that you obtain tell you?

A 80 ohm Galvanometer shows a deflection of 1 division per mA. It has 50 divisions on its scale. If a shunt of 2.5 ohm be attached to the galvanometer, what maximum current will this galvanometer measure?

In an experimental setup shown belowA block of mass m=10 kg is hanging. If mass of string is 0.01 kg and length of string is 1 m. Find the number of loop formed if a standing wave is set on the string. Frequency of the wave is given as 50 Hz.

The equation of a wave travelling on a string stretched along the X-axis is given by y=A e−(xa+tT)2 Where is the maximum of the pulse located at t = T?

the dis†an ce of a particle moving on a circle of radius 12m measured from a fixed point on the circle is given by s=2t^{3 }the ratio of †an gential to centripetal acceleration is

If in a p−n junction, a square input signal of 10 V is applied, as shown, then the output across RL will be

Integrate (1÷√x) dx from 0 to infinity

A metal rod completes a circuit as shown in the figure. The circuit is normal to magnetic field B=0.15 T. If the resistance of the circuit is 3 Ω, then the force required to move the rod with a constant velocity of 2 m/s will be

A milliammeter of range 10 mA has a coil of resistance 1Ω. To use it as voltmeter of range 10 volt, the resistance that must be connected in series with it will be

8.A stone is dropped from a certain height h Speed of the particle averaged over total distance is

A 800 kg block is supported by a structure shown in figure, if rod is light, then force at hinge joint makes angle θ with horizontal

The curves a, b, c and d shows the variation between the applied potential difference (V) and the photoelectric current (i) at two different intensities of light (I1&gt;I2). Which of the following figure is correct?

A resistor of 8 Ω is connected in parallel with another resistor R2. The resultant resistance of the combination is 4 Ω. Then, the value of resistor R2 is:

1: What is binomial theorem ?? 2: And in an "eg: momentum increase by 100% find % change in kinetic energy . 'K=p²/2m' "so here , it is given that 'p = 2p' (p+100/100p) how??

55.What would be the change in the tangential velocity of an electron , if it remains in same orbit and electronic charge is doubled ?

A current of 1 A is flowing on the sides of an equilateral triangle of side 4.5 ×10 -2 m. The magnetic field at the centre of the triangle will be : (1) 2 ×10 -5 Wb/m2 (2) Zero (3) 8 ×10 -5 Wb/m2 (4) 4 ×10 -5 Wb/m2

A thermometer is graduated in mm. It registers - 3mm when the bulb of thermometer is in pure melting ice and 22mm when the thermometer is in steam at a pressure of one atm. The temperature in ∘C when the thermometer registers 13mm is

the range of value of m for inverted and diminished image formed by a concave mirror for a real objectHere what is range

A body is projected horizontally from the top of a tower with an initial velocity of 18 ms−1. It hits the ground at an angle of 45∘ with horizontal. What is the vertical component of velocity when the body strikes the ground?

A particle moves in the plane xy with constant acceleration w directed along the negative y axis . the equation of motion of the particle has the form y= ax- bx2,where a and b are positive constants.find the velocity of the particle at the origin of coordinates.

A charge of 8 mC is located at the origin. Calculate the work done in taking a small charge of –2 × 10–9 C from a point P (0, 0, 3 cm) to a point Q (0, 4 cm, 0), via a point R (0, 6 cm, 9 cm).

Force of interaction between two co-axial short electric dipoles whose centres are R distance apart varies as

Acceleration due to gravity on moon is 16 of the acceleration due to gravity on earth.If the ratio of densities of earth (ρm) and moon (ρe) is (ρeρm)=53, then radius of moon Rm in terms of Re will be

Justify the position of hydrogen in the periodic table.

A particle moves in a circle of radius 4 m clock wise at constant speed of 2 m s−1. If ^x and ^y are unit vectors along x and y axes, respectively, the centripetal acceleration of the particle at the instant half between PQ is given by

An AC circuit consists of a 220 Ω resistance and a 0.7 H choke in series. Find the power (in W) absorbed from 220 V and 50 Hz source connected in series with the circuit elements (upto two decimal places)

Select the correct option which represent Newton's equation of viscosity.

93. Two balls are projected with same speed u at angles alpha n beta with horizontal. Their path shown in figure. Ratio of their time of flight is

In a given circuit as shown, the two input waveforms A and B are applied simultaneously. The resultant waveform Y is

Unit of Impulse per unit area is same as that ofViscositySurface tension ForceBulk modulus

A particle executes SHM with amplitude a and time period T. The displacement of the particle from the mean position when its speed is half of maximum speed is √xa2. The value of x is _______.

a galvanometer of resistance, G is shunted by a resistance S ohm. to keep the main current in the circuit unchanged the resistance to be put in series with the galvanometer is

The curves a, b, c and d shows the variation between the applied potential difference (V) and the photoelectric current (i) at two different intensities of light (I1>I2). Which of the following figure is correct?