16569 + Interview Questions in Physics

1.	16. A block weighing 1 kg is in the shape of a cube of length 10cm.it is kept on a horizontal table.find the pressure on the portion of the table where the block is kept.
Answer» 16. A block weighing 1 kg is in the shape of a cube of length 10cm.it is kept on a horizontal table.find the pressure on the portion of the table where the block is kept.

Discussion

2.	Working of an electromagnet is based on ___.
Answer» Working of an electromagnet is based on ___.

Discussion

3.	40.The separation between the objective and the eyepiece of a compound microscope can be adjusted between 9.8 cm to 11.8 cm .if focal length of the objective and the eyepiece are 1cm and 6cm respectively ,find the range of magnifying power if the image always needed at 24 cm from the eye.
Answer» 40.The separation between the objective and the eyepiece of a compound microscope can be adjusted between 9.8 cm to 11.8 cm .if focal length of the objective and the eyepiece are 1cm and 6cm respectively ,find the range of magnifying power if the image always needed at 24 cm from the eye.

Discussion

4.	How many alpha and beta particles emit when uranium nucleus 238. 206 U. To. Pb. ? 92. 82
Answer» How many alpha and beta particles emit when uranium nucleus 238. 206 U. To. Pb. ? 92. 82

Discussion

5.	An electric train of 100 kg mass, when connected to a power source, runs at a velocity of 5 ms. The train runs between station A & B 125m apart and has a capacity of 40 people. If the company is providing electricity to the train at a charging rate of Rs 100watt then what should be the minimum fare of a person on the particular route so that the train doesn’t go in loss? Assuming all energy provided by the power company is used to run the train.
Answer» An electric train of 100 kg mass, when connected to a power source, runs at a velocity of 5 $\frac{m}{s}$ . The train runs between station A & B 125m apart and has a capacity of 40 people. If the company is providing electricity to the train at a charging rate of Rs $\frac{100}{w a t t}$ then what should be the minimum fare of a person on the particular route so that the train doesn’t go in loss? Assuming all energy provided by the power company is used to run the train.

Discussion

6.	When the current in a conductor is doubled keeping other parameters constant, the heating effect of the current will become:
Answer» When the current in a conductor is doubled keeping other parameters constant, the heating effect of the current will become:

Discussion

7.	Figure shows a POT whose resistnace changes linearly over 0 to 2 kΩ, Where A corresponds to zero displcement and B corresponds to 15 cm displacement. The value of R1 in kΩ to get output voltage of 0 to 8 V for full displacment is1
Answer» Figure shows a POT whose resistnace changes linearly over $0$ to $2 k Ω$ , Where $A$ corresponds to zero displcement and $B$ corresponds to $15 c m$ displacement. The value of $R_{1}$ in $k Ω$ to get output voltage of $0$ to $8 V$ for full displacment is 1

Discussion

8.	In the radioactive decay - 238Pu→234U+α, What will be the kinetic energy of the outgoing α-particle? Given:- -Atomic masses: m(238Pu)=238.04955 u; m(234U)=234.04095 u; m(4He)=4.002603 u -Constant: c2=931MeVu
Answer» In the radioactive decay - $^{238} P u \to^{234} U + α$ , What will be the kinetic energy of the outgoing α-particle? Given:- -Atomic masses: $m (^{238} P u) = 238.04955 u; m (^{234} U) = 234.04095 u;$ $m (^{4} H e) = 4.002603 u$ -Constant: $c^{2} = 931 \frac{M e V}{u}$

8.

In the radioactive decay - 238Pu→234U+α, What will be the kinetic energy of the outgoing α-particle? Given:- -Atomic masses: m(238Pu)=238.04955 u; m(234U)=234.04095 u; m(4He)=4.002603 u -Constant: c2=931MeVu

Answer»

In the radioactive decay - $^{238} P u \to^{234} U + α$ ,
What will be the kinetic energy of the outgoing α-particle?
Given:-

-Atomic masses:

$m (^{238} P u) = 238.04955 u; m (^{234} U) = 234.04095 u;$

$m (^{4} H e) = 4.002603 u$

-Constant: $c^{2} = 931 \frac{M e V}{u}$

Discussion

9.	Why angular momentum for s sub level is zero?
Answer» Why angular momentum for s sub level is zero?

Discussion

10.	A sonometer wire of length 1m weighing 2g is subjected to a suitable tension the vibrating length of sonometer wire in unison with fork of frequency 512Hz is 12cm Of the vibrating length of wire in unison with other fork under same conditions is 12.8cmfind the frequency of other for
Answer» A sonometer wire of length 1m weighing 2g is subjected to a suitable tension the vibrating length of sonometer wire in unison with fork of frequency 512Hz is 12cm Of the vibrating length of wire in unison with other fork under same conditions is 12.8cmfind the frequency of other for

Discussion

11.	31. 90 g of water spilled out from a vessel in the room on the floor. Assuming that water vapour behaving as an ideal gas, calculate the internal energy change when the spilled water undergoes complete evaporation at 100 ^° C (Given the molar enthalpy of vaporization of water at 1 bar and 373 K =41 kJmol¯¹)
Answer» 31. 90 g of water spilled out from a vessel in the room on the floor. Assuming that water vapour behaving as an ideal gas, calculate the internal energy change when the spilled water undergoes complete evaporation at 100 ^° C (Given the molar enthalpy of vaporization of water at 1 bar and 373 K =41 kJmol¯¹)

Discussion

12.	A small satellite is revolving near earth's surface. Its orbital velocity will be nearly
Answer» A small satellite is revolving near earth's surface. Its orbital velocity will be nearly

Discussion

13.	Question 5Which characteristics of the sound helps you to identify your friend by his voice while sitting with others in a dark room?
Answer» Question 5 Which characteristics of the sound helps you to identify your friend by his voice while sitting with others in a dark room?

Discussion

14.	Okay, but still the third arrow is looking like a vertical line only. The arrow head is missing in the line →V=5^im/s in a region of space where a uniform magnetic field →B=(4^i+3^j)T exist. Find maximum possible displacement along z direction of the particle during its motion. (qm=2in S.l unit)
Answer» Okay, but still the third arrow is looking like a vertical line only. The arrow head is missing in the line $\to V = 5^i m / s$ in a region of space where a uniform magnetic field $\to B = (4^i + 3^j) T$ exist. Find maximum possible displacement along z direction of the particle during its motion. $(\frac{q}{m} = 2 in S.l unit)$

Discussion

15.	A 50 Hz synchronous generator is connected to an infinite bus through a line. The per unit reactances of the generator and the line are j0.3 p.u. and j0.2 p.u. respectively. The generator no load voltage is 1.1 p.u. and that the infinite bus is 1.0 p.u. The inertia constant of the generator is 3 MW-sec/MVA. If the generator is loaded to its maximum power transfer capacity and a small perturbation is given, then the resulting natural frequency of oscillations is _____Hz. 1.53
Answer» A 50 Hz synchronous generator is connected to an infinite bus through a line. The per unit reactances of the generator and the line are j0.3 p.u. and j0.2 p.u. respectively. The generator no load voltage is 1.1 p.u. and that the infinite bus is 1.0 p.u. The inertia constant of the generator is 3 MW-sec/MVA. If the generator is loaded to its maximum power transfer capacity and a small perturbation is given, then the resulting natural frequency of oscillations is _____Hz. 1.53

Discussion

16.	A point object O is placed in front of a transparent slab at a distance x from its closer surface. It is seen from the other side fo the slab by light incident nearly normally to the slab. The thickness of the slab is t and its refractive index is μ. Show that the apparent shift in the position fo the object is independent of x and find its value.
Answer» A point object O is placed in front of a transparent slab at a distance x from its closer surface. It is seen from the other side fo the slab by light incident nearly normally to the slab. The thickness of the slab is t and its refractive index is $μ .$ Show that the apparent shift in the position fo the object is independent of x and find its value.

Discussion

17.	A double convex lens has power P and same radii of curvature R of both the surfaces. The radius of curvature of a surface of a plano - convex lens made of the same material with power 1.5P is :
Answer» A double convex lens has power $P$ and same radii of curvature $R$ of both the surfaces. The radius of curvature of a surface of a plano - convex lens made of the same material with power $1.5 P$ is :

Discussion

18.	The pulleys and strings shown in the figure are smooth and of negligible mass. For the system to remain in equilibrium, the angle θ should be(IIT JEE 2001)
Answer» The pulleys and strings shown in the figure are smooth and of negligible mass. For the system to remain in equilibrium, the angle $θ$ should be (IIT JEE 2001)

18.

The pulleys and strings shown in the figure are smooth and of negligible mass. For the system to remain in equilibrium, the angle θ should be(IIT JEE 2001)

Answer»

The pulleys and strings shown in the figure are smooth and of negligible mass. For the system to remain in equilibrium, the angle $θ$ should be

(IIT JEE 2001)

Discussion

19.	A 10 metric ton drives up a hilly road of gradient 1 in 50 at a speed of 36 kmh^{-1}. If the coefficient of kinetic friction between the road and tyresis 0.2, find the power delivered by the engine (g=10ms^{-2}) (1) 12×10^4W (2) 32×10^4W (3) 22×10^4W (4) 2.2×10^4W
Answer» A 10 metric ton drives up a hilly road of gradient 1 in 50 at a speed of 36 kmh^{-1}. If the coefficient of kinetic friction between the road and tyresis 0.2, find the power delivered by the engine (g=10ms^{-2}) (1) 12×10^4W (2) 32×10^4W (3) 22×10^4W (4) 2.2×10^4W

Discussion

20.	2323.The potential difference applied to an X-ray tube is 5 kV and the current through it is 3.2 mA.Then the number of electrons striking the target per second is(1) 2 x 1016(3) 1 x 1017(2) 5 x 1016(4) 4 x 1015Hint: he -2x1016
Answer» 2323.The potential difference applied to an X-ray tube is 5 kV and the current through it is 3.2 mA.Then the number of electrons striking the target per second is(1) 2 x 1016(3) 1 x 1017(2) 5 x 1016(4) 4 x 1015Hint: he -2x1016

Discussion

21.	Fill in the blanks(a) The object to be electroplated is taken as ___ electrode.
Answer» Fill in the blanks (a) The object to be electroplated is taken as ___ electrode.

Discussion

22.	Dependence of intensity of gravitational field (E) of earth with distance (r) from centre of earth is correctly represented by
Answer» Dependence of intensity of gravitational field $(E)$ of earth with distance $(r)$ from centre of earth is correctly represented by

Discussion

23.	The moment of a force about a given axis depends: (a) only on the magnitude of force (b) Only on the perpendicular distance of force from the axis (c) neither on the force nor on the perpendicular distance of force from the axis (d) both, on the force and its perpendicular distance from the axis.
Answer» The moment of a force about a given axis depends: (a) only on the magnitude of force (b) Only on the perpendicular distance of force from the axis (c) neither on the force nor on the perpendicular distance of force from the axis (d) both, on the force and its perpendicular distance from the axis.

23.

The moment of a force about a given axis depends: (a) only on the magnitude of force (b) Only on the perpendicular distance of force from the axis (c) neither on the force nor on the perpendicular distance of force from the axis (d) both, on the force and its perpendicular distance from the axis.

Answer»

The moment of a force about a given axis depends:

(a) only on the magnitude of force

(b) Only on the perpendicular distance of force from the axis

(c) neither on the force nor on the perpendicular distance of force from the axis

(d) both, on the force and its perpendicular distance from the axis.

Discussion

24.	An isosceles glass prism with angles 40∘ is clamped over a tray of water in a position such that the base is just dipped in water. A ray of light incident normally on the inclined face suffers total internal reflection at the base. If the refractive index of water is 1.33 then the condition imposed on the refractive index μ of the glass is
Answer» An isosceles glass prism with angles 40 $^{\circ}$ is clamped over a tray of water in a position such that the base is just dipped in water. A ray of light incident normally on the inclined face suffers total internal reflection at the base. If the refractive index of water is 1.33 then the condition imposed on the refractive index $μ$ of the glass is

Discussion

25.	A lead ball at 30 ∘C is dropped from a height of 6.2 km. The ball is heated due to the air resistance and it completely melts just before reaching the ground. The molten substance falls slowly on the ground. Calculate the latent heat of fusion of lead. Specific heat capacity of lead = 126 J kg−1 ∘C−1 and melting point of lead = 330 ∘C. Assume that any mechanical energy lost is used to heat the ball. Use g = 10 ms−2.
Answer» A lead ball at $30^{\circ} C$ is dropped from a height of $6.2 k m$ . The ball is heated due to the air resistance and it completely melts just before reaching the ground. The molten substance falls slowly on the ground. Calculate the latent heat of fusion of lead. Specific heat capacity of lead = $126 J k g^{- 1}^{\circ} C^{- 1}$ and melting point of lead = $330^{\circ} C$ . Assume that any mechanical energy lost is used to heat the ball. Use $g$ = $10 m s^{- 2}$ .

Discussion

26.	What signs for object distance and image distance must we take for a myopic eye and a hypermetropic eye?
Answer» What signs for object distance and image distance must we take for a myopic eye and a hypermetropic eye?

Discussion

27.	in which metal container we can store salt of Sn^{2+}? 1)Al 2)Fe 3) Cu 4) M
Answer» in which metal container we can store salt of Sn^{2+}? 1)Al 2)Fe 3) Cu 4) M

Discussion

28.	Why does a horse rider fall forwards when a horse at full gallop stops suddenly?
Answer» Why does a horse rider fall forwards when a horse at full gallop stops suddenly?

Discussion

29.	If we are living in a village near a forest, then how will we be dependent on the forest?
Answer» If we are living in a village near a forest, then how will we be dependent on the forest?

Discussion

30.	In the given figure, where do the diverging rays seem to meet?(F1 ,F2 are the primary focus of the lens)
Answer» In the given figure, where do the diverging rays seem to meet? ( $F_{1}$ , $F_{2}$ are the primary focus of the lens)

Discussion

31.	The colour of earth wire is:
Answer» The colour of earth wire is:

Discussion

32.	How many 1 micro farad capacitors must be connected in parallel to store a charge of 1C with a potential 110 V across the capacitors
Answer» How many 1 micro farad capacitors must be connected in parallel to store a charge of 1C with a potential 110 V across the capacitors

Discussion

33.	There are how many different ways through which we can light the candle without disturbing the set-up?
Answer» There are how many different ways through which we can light the candle without disturbing the set-up?

Discussion

34.	A person suffering from myopia can see upto 3m.The power of lens required to rectify is
Answer» A person suffering from myopia can see upto 3m.The power of lens required to rectify is

Discussion

35.	Electromagnetic induction means-a. Charging of an electric conductor.b. Production of magnetic field due to a current flowing through a coil.c. Generation of a current in a coil due to relative motion between the coil and the magnet.d. Motion of the coil around the axle in an electric motor.
Answer» Electromagnetic induction means- a. Charging of an electric conductor. b. Production of magnetic field due to a current flowing through a coil. c. Generation of a current in a coil due to relative motion between the coil and the magnet. d. Motion of the coil around the axle in an electric motor.

Discussion

36.	The adjacent figure shows a thin plano - convex lens of refractive index μ1 and a thin plano - concave R of their curved surfaces. The thin concavo - convex lens of refractive index μ3 has radius of curvature R of both its surfaces. The concavo - convex lens is so placed in between the plano - convex and plano concave lenses that the plane surfaces are parallel to each other. The focal length of the combination is
Answer» The adjacent figure shows a thin plano - convex lens of refractive index $μ_{1}$ and a thin plano - concave R of their curved surfaces. The thin concavo - convex lens of refractive index $μ_{3}$ has radius of curvature R of both its surfaces. The concavo - convex lens is so placed in between the plano - convex and plano concave lenses that the plane surfaces are parallel to each other. The focal length of the combination is

Discussion

37.	the wavelength of a wave is 1.7 multiplied by 10 to the power -2.(1.7 *(10^(-2)). The speed of the wave is 343.4 m/s. Find frequency and time period.
Answer» the wavelength of a wave is 1.7 multiplied by 10 to the power -2.(1.7 *(10^(-2)). The speed of the wave is 343.4 m/s. Find frequency and time period.

37.

the wavelength of a wave is 1.7 multiplied by 10 to the power -2.(1.7 *(10^(-2)). The speed of the wave is 343.4 m/s. Find frequency and time period.

Answer»

the wavelength of a wave is 1.7 multiplied by 10 to the power -2.(1.7 *(10^(-2)). The speed of the wave is 343.4 m/s.

Find frequency and time period.

Discussion

38.	Question 7Make a diagram to show how hypermetropia is corrected. The near point of a hypermetropic eye is 1 m. What is the power of the lens required to correct this defect? Assume that the near point of the normal eye is 25 cm.
Answer» Question 7 Make a diagram to show how hypermetropia is corrected. The near point of a hypermetropic eye is 1 m. What is the power of the lens required to correct this defect? Assume that the near point of the normal eye is 25 cm.

Discussion

39.	What is resistivity?
Answer» What is resistivity?

Discussion

40.	Two identical plane mirrors are parallel to each other at a dis†an ce \sqrt3 cm length of the plane mirror is 1 m. If a light is reflected at an angle of 30^0 at the edge of one mirror then the total number of reflection before it comes out of the mirror is
Answer» Two identical plane mirrors are parallel to each other at a dis†an ce \sqrt3 cm length of the plane mirror is 1 m. If a light is reflected at an angle of 30^0 at the edge of one mirror then the total number of reflection before it comes out of the mirror is

Discussion

41.	Which of the given sources of energy is the odd one out?
Answer» Which of the given sources of energy is the odd one out?

Discussion

42.	how does a concave mirror help in Solar cooking
Answer» how does a concave mirror help in Solar cooking

Discussion

43.	A 10 metre long copper wire remaining in the east west horizontal direction is falling down with speed of 5m/s.
Answer» A 10 metre long copper wire remaining in the east west horizontal direction is falling down with speed of 5m/s.

Discussion

44.	Acid rain is formed due to the:
Answer» Acid rain is formed due to the:

Discussion

45.	The Laplace transform of the function f(t)=k,0<t<c=0,c<t<∞, is
Answer» The Laplace transform of the function $f (t) = k, 0 < t < c = 0, c < t < \infty$ , is

Discussion

46.	39.The potential difference between point A and B is
Answer» 39.The potential difference between point A and B is

Discussion

47.	The equivalent resistance between A and B is:
Answer» The equivalent resistance between A and B is:

47.

The equivalent resistance between A and B is:

Answer»

The equivalent resistance between A and B is:

Discussion

48.	(i) How does the poet describe the moon: (a) at the beginning of the third stanza, and (b) at its end? What causes this change? (ii) What happens to the house when the trees move out of it? (iii) Why do you think the poet does not mention “the departure of the forest from the house” in her letters? (Could it be that we are often silent about important happenings that are so unexpected that they embarrass us? Think about this again when you answer the next set of questions)
Answer» (i) How does the poet describe the moon: (a) at the beginning of the third stanza, and (b) at its end? What causes this change? (ii) What happens to the house when the trees move out of it? (iii) Why do you think the poet does not mention “the departure of the forest from the house” in her letters? (Could it be that we are often silent about important happenings that are so unexpected that they embarrass us? Think about this again when you answer the next set of questions)

48.

(i) How does the poet describe the moon: (a) at the beginning of the third stanza, and (b) at its end? What causes this change? (ii) What happens to the house when the trees move out of it? (iii) Why do you think the poet does not mention “the departure of the forest from the house” in her letters? (Could it be that we are often silent about important happenings that are so unexpected that they embarrass us? Think about this again when you answer the next set of questions)

Answer»

(i) How
does the poet describe the moon: (a) at the beginning of the third
stanza, and (b) at its end? What causes this change?

(ii) What
happens to the house when the trees move out of it?

(iii) Why
do you think the poet does not mention “the departure of the
forest from the house” in her letters? (Could it be that we are
often silent about important happenings that are so unexpected that
they embarrass us? Think about this again when you answer the next
set of questions)

Discussion

49.	How do electrostatic precipitators, scrubbers and catalytic converters prevent pollution?
Answer» How do electrostatic precipitators, scrubbers and catalytic converters prevent pollution?

Discussion

50.	During partial combustion of fuels, the gas which is produced in large quantity is
Answer» During partial combustion of fuels, the gas which is produced in large quantity is

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

16. A block weighing 1 kg is in the shape of a cube of length 10cm.it is kept on a horizontal table.find the pressure on the portion of the table where the block is kept.

Working of an electromagnet is based on ___.

40.The separation between the objective and the eyepiece of a compound microscope can be adjusted between 9.8 cm to 11.8 cm .if focal length of the objective and the eyepiece are 1cm and 6cm respectively ,find the range of magnifying power if the image always needed at 24 cm from the eye.

How many alpha and beta particles emit when uranium nucleus 238. 206 ​​​​​ U. To. Pb. ? 92. 82

When the current in a conductor is doubled keeping other parameters constant, the heating effect of the current will become:

Figure shows a POT whose resistnace changes linearly over 0 to 2 kΩ, Where A corresponds to zero displcement and B corresponds to 15 cm displacement. The value of R1 in kΩ to get output voltage of 0 to 8 V for full displacment is1

In the radioactive decay - 238Pu→234U+α, What will be the kinetic energy of the outgoing α-particle? Given:- -Atomic masses: m(238Pu)=238.04955 u; m(234U)=234.04095 u; m(4He)=4.002603 u -Constant: c2=931MeVu

Why angular momentum for s sub level is zero?

A sonometer wire of length 1m weighing 2g is subjected to a suitable tension the vibrating length of sonometer wire in unison with fork of frequency 512Hz is 12cm Of the vibrating length of wire in unison with other fork under same conditions is 12.8cmfind the frequency of other for

A small satellite is revolving near earth's surface. Its orbital velocity will be nearly

Question 5Which characteristics of the sound helps you to identify your friend by his voice while sitting with others in a dark room?

A double convex lens has power P and same radii of curvature R of both the surfaces. The radius of curvature of a surface of a plano - convex lens made of the same material with power 1.5P is :

The pulleys and strings shown in the figure are smooth and of negligible mass. For the system to remain in equilibrium, the angle θ should be(IIT JEE 2001)

A 10 metric ton drives up a hilly road of gradient 1 in 50 at a speed of 36 kmh^{-1}. If the coefficient of kinetic friction between the road and tyresis 0.2, find the power delivered by the engine (g=10ms^{-2}) (1) 12×10^4W (2) 32×10^4W (3) 22×10^4W (4) 2.2×10^4W

2323.The potential difference applied to an X-ray tube is 5 kV and the current through it is 3.2 mA.Then the number of electrons striking the target per second is(1) 2 x 1016(3) 1 x 1017(2) 5 x 1016(4) 4 x 1015Hint: he -2x1016

Fill in the blanks(a) The object to be electroplated is taken as ___ electrode.

Dependence of intensity of gravitational field (E) of earth with distance (r) from centre of earth is correctly represented by

The moment of a force about a given axis depends: (a) only on the magnitude of force (b) Only on the perpendicular distance of force from the axis (c) neither on the force nor on the perpendicular distance of force from the axis (d) both, on the force and its perpendicular distance from the axis.

What signs for object distance and image distance must we take for a myopic eye and a hypermetropic eye?

in which metal container we can store salt of Sn^{2+}? 1)Al 2)Fe 3) Cu 4) M

Why does a horse rider fall forwards when a horse at full gallop stops suddenly?

If we are living in a village near a forest, then how will we be dependent on the forest?

In the given figure, where do the diverging rays seem to meet?(F1 ,F2 are the primary focus of the lens)

The colour of earth wire is:

How many 1 micro farad capacitors must be connected in parallel to store a charge of 1C with a potential 110 V across the capacitors

There are how many different ways through which we can light the candle without disturbing the set-up?

A person suffering from myopia can see upto 3m.The power of lens required to rectify is

Electromagnetic induction means-a. Charging of an electric conductor.b. Production of magnetic field due to a current flowing through a coil.c. Generation of a current in a coil due to relative motion between the coil and the magnet.d. Motion of the coil around the axle in an electric motor.

the wavelength of a wave is 1.7 multiplied by 10 to the power -2.(1.7 *(10^(-2)). The speed of the wave is 343.4 m/s. Find frequency and time period.

Question 7Make a diagram to show how hypermetropia is corrected. The near point of a hypermetropic eye is 1 m. What is the power of the lens required to correct this defect? Assume that the near point of the normal eye is 25 cm.

What is resistivity?

Two identical plane mirrors are parallel to each other at a dis†an ce \sqrt3 cm length of the plane mirror is 1 m. If a light is reflected at an angle of 30^0 at the edge of one mirror then the total number of reflection before it comes out of the mirror is

Which of the given sources of energy is the odd one out?

how does a concave mirror help in Solar cooking

A 10 metre long copper wire remaining in the east west horizontal direction is falling down with speed of 5m/s.

Acid rain is formed due to the:

The Laplace transform of the function f(t)=k,0&lt;t&lt;c=0,c&lt;t&lt;∞, is

39.The potential difference between point A and B is

The equivalent resistance between A and B is:

How do electrostatic precipitators, scrubbers and catalytic converters prevent pollution?

During partial combustion of fuels, the gas which is produced in large quantity is

How many alpha and beta particles emit when uranium nucleus 238. 206 U. To. Pb. ? 92. 82

The Laplace transform of the function f(t)=k,0<t<c=0,c<t<∞, is