16569 + Interview Questions in Physics

1.	ntThe resistance of solution A is 100 ohm and resistance of solution B is 200 ohm in same conductivity cell .if equal volume of solution A and B are mixed and taken in same cell .find resistance of mixture A 133.33ohm B 166.66ohm C 150ohm D 175ohmn
Answer» ntThe resistance of solution A is 100 ohm and resistance of solution B is 200 ohm in same conductivity cell .if equal volume of solution A and B are mixed and taken in same cell .find resistance of mixture A 133.33ohm B 166.66ohm C 150ohm D 175ohmn

Discussion

2.	A bullet is fired normally on an immovable wooden plank.it loses25% of its momentum in penetrating a thickness of 3.5 cm. find the total thickness (in cm) penetrated by the bullet
Answer» A bullet is fired normally on an immovable wooden plank.it loses25% of its momentum in penetrating a thickness of 3.5 cm. find the total thickness (in cm) penetrated by the bullet

Discussion

3.	15. When 1kg of water mixed with w g of urea then solution cold 0.372^°c and 200g ice isolated if the kg= 1.86kkg/mol for water so W is 1)4.8g 2)12.0g 3)9.6g 4)6.0g
Answer» 15. When 1kg of water mixed with w g of urea then solution cold 0.372^°c and 200g ice isolated if the kg= 1.86kkg/mol for water so W is 1)4.8g 2)12.0g 3)9.6g 4)6.0g

Discussion

4.	Name one defect of vision (or eye) which cannot be corrected by any type of spectacle lenses.
Answer» Name one defect of vision (or eye) which cannot be corrected by any type of spectacle lenses.

Discussion

5.	Which fuel is used in thermal power plant? What are the problems associated with this type of power generation?
Answer» Which fuel is used in thermal power plant? What are the problems associated with this type of power generation?

Discussion

6.	Upper oesophageal sphincter is made up of___ and lower oesophageal sphincter of ___.
Answer» Upper oesophageal sphincter is made up of___ and lower oesophageal sphincter of ___.

Discussion

7.	136.Two Small rings O and O' are put on two vertical stationary- rods AB and A` B, respectively (see Fig. 7379) One end of an inextensible thread is tied at point A`. The thread through ring O' and its other end is tied ring o .Assuming that ring O' moves downwards at a constant velocity by V find V` if angle is alpha
Answer» 136.Two Small rings O and O' are put on two vertical stationary- rods AB and A` B, respectively (see Fig. 7379) One end of an inextensible thread is tied at point A`. The thread through ring O' and its other end is tied ring o .Assuming that ring O' moves downwards at a constant velocity by V find V` if angle is alpha

Discussion

8.	3. From a dam, water is pouring down at }150kg/s , on the blades of a turbine. If a ball } dropped from the same dam takes }2\sqrt5s to hit the } turbine, then the power delivered to the turbine is }{ approximately equal to (Take }g=10m/s^2)(1) 150k} (2) }15W (3) }125kW (4) }15.5kW
Answer» 3. From a dam, water is pouring down at }150kg/s , on the blades of a turbine. If a ball } dropped from the same dam takes }2\sqrt5s to hit the } turbine, then the power delivered to the turbine is }{ approximately equal to (Take }g=10m/s^2)(1) 150k} (2) }15W (3) }125kW (4) }15.5kW

Discussion

9.	Explain about nuclear fission?
Answer» Explain about nuclear fission?

Discussion

10.	While playing with prisms, Sushweta arranged three prisms as shown below (2nd prism inverted with respect to the other two) and made sunlight fall on the 1st prism.The colour(s) she would observe in regions A, B and C are respectively:
Answer» While playing with prisms, Sushweta arranged three prisms as shown below ( $2^{n d}$ prism inverted with respect to the other two) and made sunlight fall on the $1^{s t}$ prism. The colour(s) she would observe in regions A, B and C are respectively:

10.

While playing with prisms, Sushweta arranged three prisms as shown below (2nd prism inverted with respect to the other two) and made sunlight fall on the 1st prism.The colour(s) she would observe in regions A, B and C are respectively:

Answer»

While playing with prisms, Sushweta arranged three prisms as shown below ( $2^{n d}$ prism inverted with respect to the other two) and made sunlight fall on the $1^{s t}$ prism.

The colour(s) she would observe in regions A, B and C are respectively:

Discussion

11.	20waves passes throw a point in 2sec . If the distance between the crest and the adjacent troughs is 1.5 m calculate the frequency, wavelength and velocity.
Answer» 20waves passes throw a point in 2sec . If the distance between the crest and the adjacent troughs is 1.5 m calculate the frequency, wavelength and velocity.

Discussion

12.	A rectangular piece of paper of width 20 cm and length 44 cm is rolled along its width to form cylinder. What is the volume of the cylinder so formed?
Answer» A rectangular piece of paper of width 20 cm and length 44 cm is rolled along its width to form cylinder. What is the volume of the cylinder so formed?

Discussion

13.	How is petroleum formed?
Answer» How is petroleum formed?

Discussion

14.	Centifugal force is called a pseudo force-why
Answer» Centifugal force is called a pseudo force-why

Discussion

15.	The values of two resistors are 5.0+-0.2 k ohm and 10.0+-0.1 k ohm.what is the % error in the equivalent resistance when they are connected in parallel?
Answer» The values of two resistors are 5.0+-0.2 k ohm and 10.0+-0.1 k ohm.what is the % error in the equivalent resistance when they are connected in parallel?

Discussion

16.	A student made an electric circuit shown here to measure the current through two lamp. (a) Are the lamps in series or parallel? (b) The student has made a mistake in this circuit. What is the mistake? (c) Draw a circuit diagram to show the correct way to connect the circuit Use the proper circuit symbols in your diagram.
Answer» A student made an electric circuit shown here to measure the current through two lamp. (a) Are the lamps in series or parallel? (b) The student has made a mistake in this circuit. What is the mistake? (c) Draw a circuit diagram to show the correct way to connect the circuit Use the proper circuit symbols in your diagram.

16.

A student made an electric circuit shown here to measure the current through two lamp. (a) Are the lamps in series or parallel? (b) The student has made a mistake in this circuit. What is the mistake? (c) Draw a circuit diagram to show the correct way to connect the circuit Use the proper circuit symbols in your diagram.

Answer»

A student made an electric circuit shown here to measure the current through two lamp.
(a) Are the lamps in series or parallel?
(b) The student has made a mistake in this circuit. What is the mistake?
(c) Draw a circuit diagram to show the correct way to connect the circuit Use the proper circuit symbols in your diagram.

Discussion

17.	What is union
Answer» What is union

Discussion

18.	Question 20 Identify the device used as a spherical mirror or lens in following cases, when the image formed is virtual and erect in each case. (a) Object is placed between device and its focus, image formed is enlarged and behind it. (b) Object is placed between the focus and device, image formed is enlarged and on the same side as that of the object. (c) Object is placed between infinity and device, image formed is diminished and between focus and optical centre on the same side as that of the object. (d) Object is placed between infinity and device, image formed is diminished and between pole and focus, behind it.
Answer» Question 20 Identify the device used as a spherical mirror or lens in following cases, when the image formed is virtual and erect in each case. (a) Object is placed between device and its focus, image formed is enlarged and behind it. (b) Object is placed between the focus and device, image formed is enlarged and on the same side as that of the object. (c) Object is placed between infinity and device, image formed is diminished and between focus and optical centre on the same side as that of the object. (d) Object is placed between infinity and device, image formed is diminished and between pole and focus, behind it.

18.

Question 20 Identify the device used as a spherical mirror or lens in following cases, when the image formed is virtual and erect in each case. (a) Object is placed between device and its focus, image formed is enlarged and behind it. (b) Object is placed between the focus and device, image formed is enlarged and on the same side as that of the object. (c) Object is placed between infinity and device, image formed is diminished and between focus and optical centre on the same side as that of the object. (d) Object is placed between infinity and device, image formed is diminished and between pole and focus, behind it.

Answer» Question 20
Identify the device used as a spherical mirror or lens in following cases, when the image formed is virtual and erect in each case.

(a) Object is placed between device and its focus, image formed is enlarged and behind it.

(b) Object is placed between the focus and device, image formed is enlarged and on the same side as that of the object.

(c) Object is placed between infinity and device, image formed is diminished and between focus and optical centre on the same side as that of the object.

(d) Object is placed between infinity and device, image formed is diminished and between pole and focus, behind it.

Discussion

19.	3. A light and a heavy body have equal momenta. Which one has greater K.E [AIIMS 1998; UPSEAT 2000; JIPMER 2001; Kerala PMT 2004] (a) The light body (c) The K.E. are equal (b) The heavy body (d) Data is incomplete
Answer» 3. A light and a heavy body have equal momenta. Which one has greater K.E [AIIMS 1998; UPSEAT 2000; JIPMER 2001; Kerala PMT 2004] (a) The light body (c) The K.E. are equal (b) The heavy body (d) Data is incomplete

Discussion

20.	An equilateral prism has angle of minimum deviation 30^° .Find total deviation if a ray is incident normally on a surface
Answer» An equilateral prism has angle of minimum deviation 30^° .Find total deviation if a ray is incident normally on a surface

Discussion

21.	In the given figure, the galvanometer does not have a deflection if:
Answer» In the given figure, the galvanometer does not have a deflection if:

Discussion

22.	a scientist uses a water †an k lacated at a height of 27m from the ground to generate electric power to run a 50W bulb. He installs a water driven wheel generator on the ground if the capacity of †an k is 500L and efficiency of generator is 80% then the time taken for which he can keep the bulb on with a full †an
Answer» a scientist uses a water †an k lacated at a height of 27m from the ground to generate electric power to run a 50W bulb. He installs a water driven wheel generator on the ground if the capacity of †an k is 500L and efficiency of generator is 80% then the time taken for which he can keep the bulb on with a full †an

Discussion

23.	why cathode rays trace circular path when pass through magnetic field?
Answer» why cathode rays trace circular path when pass through magnetic field?

Discussion

24.	The spot speeds (expressed in km/hr) observed at a road section are 66,62,45,79,32,51,56,60,53 and 49, the median speed (expressed in km/hr) is (Note: answer with one decimal accuracy)54.5
Answer» The spot speeds (expressed in km/hr) observed at a road section are $66, 62, 45, 79, 32, 51, 56, 60, 53$ and $49$ , the median speed (expressed in km/hr) is (Note: answer with one decimal accuracy) 54.5

24.

The spot speeds (expressed in km/hr) observed at a road section are 66,62,45,79,32,51,56,60,53 and 49, the median speed (expressed in km/hr) is (Note: answer with one decimal accuracy)54.5

Answer»

The spot speeds (expressed in km/hr) observed at a road section are $66, 62, 45, 79, 32, 51, 56, 60, 53$ and $49$ , the median speed (expressed in km/hr) is (Note: answer with one decimal accuracy)

54.5

Discussion

25.	write the condition for rotational equilibrium (take torque bout centre of gravity)
Answer» write the condition for rotational equilibrium (take torque bout centre of gravity)

Discussion

26.	two forces equal to P and 2P newton act on a particle. If the first be doubled and the second be increased by 20 newton, the direction of the resul†an t is unaltered. Find the value of P
Answer» two forces equal to P and 2P newton act on a particle. If the first be doubled and the second be increased by 20 newton, the direction of the resul†an t is unaltered. Find the value of P

Discussion

27.	In the circuit shown in figure the internal resistance of the cell is negligible. For the value of R=40xΩ, no current flows through the galvanometer. What is x?(Integer value)
Answer» In the circuit shown in figure the internal resistance of the cell is negligible. For the value of $R = \frac{40}{x} Ω$ , no current flows through the galvanometer. What is $x$ ?(Integer value)

Discussion

28.	the distance between the two charges 25 microcoulomb anf 36microcoulomb is 11cm
Answer» the distance between the two charges 25 microcoulomb anf 36microcoulomb is 11cm

Discussion

29.	a block of mass m is being pulled upon the rough inclined plane by a man delivering cons†an t power P. the coefficient of friction between the block and incline is u. the maximum speed of block during ascent is ?
Answer» a block of mass m is being pulled upon the rough inclined plane by a man delivering cons†an t power P. the coefficient of friction between the block and incline is u. the maximum speed of block during ascent is ?

Discussion

30.	why is the charge quantised
Answer» why is the charge quantised

Discussion

31.	6. A water sample contains 9.5 % MgCl2 and 11.7% NaCl by mass Assuming 80% ionisation of each , find the Boiling point of water sample (Boling point of pure water is 100 ^° C
Answer» 6. A water sample contains 9.5 % MgCl2 and 11.7% NaCl by mass Assuming 80% ionisation of each , find the Boiling point of water sample (Boling point of pure water is 100 ^° C

Discussion

32.	An electron enters a magnetic field of intensity 8T with a velocity 2×106 m/s in a direction at an angle of 90∘ with the field. The force acting on the electron is
Answer» An electron enters a magnetic field of intensity 8T with a velocity $2 \times 10^{6} m / s$ in a direction at an angle of $90^{\circ}$ with the field. The force acting on the electron is

Discussion

33.	A ball of mass 10g is dropped from a certain height.At 50m height its KE is equal to its PE. From what height was it dropped?
Answer» A ball of mass 10g is dropped from a certain height.At 50m height its KE is equal to its PE. From what height was it dropped?

Discussion

34.	Calculate the value of acceleration due to gravity at height R above Earth’s surface in terms of g, where g is acceleration due to gravity at Earth surface and R is radius of Earth.
Answer» Calculate the value of acceleration due to gravity at height R above Earth’s surface in terms of g, where g is acceleration due to gravity at Earth surface and R is radius of Earth.

Discussion

35.	A: the acceleration due to gravity for an object is independent from its mass.R: the value of g depends on mass of the planet
Answer» A: the acceleration due to gravity for an object is independent from its mass. R: the value of g depends on mass of the planet

Discussion

36.	A ball is dropped from a height of 10 m. If the energy of the ball reduces by 40% after striking the ground, how much high can the ball bounce back? (g=10 ms−2)
Answer» A ball is dropped from a height of 10 m. If the energy of the ball reduces by 40% after striking the ground, how much high can the ball bounce back? $(g = 10 m s^{- 2})$

Discussion

37.	The astigmatic eye has a problem in viewing images uniformly on which lines?
Answer» The astigmatic eye has a problem in viewing images uniformly on which lines?

Discussion

38.	the first ionisation enthaly of lithium is 5.41 e.v and electron gain enthalpy of chlorine is 3.61 e.v. the △ H in Kj/mole for the reaction li(g) + cl(g) → li^+(g) + cl^-(g) is 1.737×10^{x }kj/mole. what is the value of 'x'?
Answer» the first ionisation enthaly of lithium is 5.41 e.v and electron gain enthalpy of chlorine is 3.61 e.v. the △ H in Kj/mole for the reaction li(g) + cl(g) → li^+(g) + cl^-(g) is 1.737×10^{x }kj/mole. what is the value of 'x'?

Discussion

39.	If current is alternating at our homes so our fans also run back and forth why isn't a fan do that.
Answer» If current is alternating at our homes so our fans also run back and forth why isn't a fan do that.

Discussion

40.	Question 15Illustrate the law of conservation of energy by discussing the energy changes which occur when we draw a pendulum bob to one side and allow it to oscillate. Why do the bob eventually come to rest? What happens to its energy eventually? Is it a violation of the law of conservation of energy?
Answer» Question 15 Illustrate the law of conservation of energy by discussing the energy changes which occur when we draw a pendulum bob to one side and allow it to oscillate. Why do the bob eventually come to rest? What happens to its energy eventually? Is it a violation of the law of conservation of energy?

Discussion

41.	Which photoreceptor is responsible for colour vision of our eye?
Answer» Which photoreceptor is responsible for colour vision of our eye?

Discussion

42.	Two canoes are 10 m apart in a lake. Each bobs up and down with a period of 4.0 s. When one canoe is at its highest point, the other canoe is at its lowest point. Both the canoes are always within a single cycle of waves. Determine the speed of the wave.
Answer» Two canoes are 10 m apart in a lake. Each bobs up and down with a period of 4.0 s. When one canoe is at its highest point, the other canoe is at its lowest point. Both the canoes are always within a single cycle of waves. Determine the speed of the wave.

Discussion

43.	You are given three mirrors:- concave, convex and plane. How will you indentify them without touching them?
Answer» You are given three mirrors:- concave, convex and plane. How will you indentify them without touching them?

Discussion

44.	Choose the word which best fills the blank from the four options given. When the teacher asked Ravi a question, he gave her a blank ___.
Answer» Choose the word which best fills the blank from the four options given. When the teacher asked Ravi a question, he gave her a blank ___.

Discussion

45.	What is coal gas
Answer» What is coal gas

Discussion

46.

Find examples of the use of interesting sounds from the poem and explain their effect on the reader. 1. The ice 'cracked and growled and roared and howled' Coleridge uses onomatopoeic words which use harsh 'ck' sounds to make the ice sound brutal. He also gives the ice animal sounds to give the impression it has come alive and is attacking the ship

Answer»

Find
examples of the use of interesting sounds from the poem and explain
their effect on the reader.

1.	The ice 'cracked and growled and roared and howled'	Coleridge uses onomatopoeic words which use harsh 'ck' sounds to make the ice sound brutal. He also gives the ice animal sounds to give the impression it has come alive and is attacking the ship

Discussion

47.	For two resistors R1 and R2 connected in parallel find relative error in their equivalent resistance if R1=(50+-2) and R2=(100+-3)ohm
Answer» For two resistors R1 and R2 connected in parallel find relative error in their equivalent resistance if R1=(50+-2) and R2=(100+-3)ohm

Discussion

48.	75.two identical thin isosceles prism of refractive angle A and refractive index meu are placed with their bases touching each other .two parallel rays of light are incident on the system as shown .The distance of the point where the rays converge from the prism is approximately given by 1)h/(u-1)A
Answer» 75.two identical thin isosceles prism of refractive angle A and refractive index meu are placed with their bases touching each other .two parallel rays of light are incident on the system as shown .The distance of the point where the rays converge from the prism is approximately given by 1)h/(u-1)A

Discussion

49.	Name the safety devices which are connected to the live wire of a household electrical circuit.
Answer» Name the safety devices which are connected to the live wire of a household electrical circuit.

Discussion

50.	47. Refracting angle of a Prism is A and refractive index of the material of the prism is cotA/2.Find the angle of minimum deviation.
Answer» 47. Refracting angle of a Prism is A and refractive index of the material of the prism is cotA/2.Find the angle of minimum deviation.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

ntThe resistance of solution A is 100 ohm and resistance of solution B is 200 ohm in same conductivity cell .if equal volume of solution A and B are mixed and taken in same cell .find resistance of mixture A 133.33ohm B 166.66ohm C 150ohm D 175ohmn

A bullet is fired normally on an immovable wooden plank.it loses25% of its momentum in penetrating a thickness of 3.5 cm. find the total thickness (in cm) penetrated by the bullet

15. When 1kg of water mixed with w g of urea then solution cold 0.372^°c and 200g ice isolated if the kg= 1.86kkg/mol for water so W is 1)4.8g 2)12.0g 3)9.6g 4)6.0g

Name one defect of vision (or eye) which cannot be corrected by any type of spectacle lenses.

Which fuel is used in thermal power plant? What are the problems associated with this type of power generation?

Upper oesophageal sphincter is made up of___ and lower oesophageal sphincter of ___.

3. From a dam, water is pouring down at }150kg/s , on the blades of a turbine. If a ball } dropped from the same dam takes }2\sqrt5s to hit the } turbine, then the power delivered to the turbine is }{ approximately equal to (Take }g=10m/s^2)(1) 150k} (2) }15W (3) }125kW (4) }15.5kW

Explain about nuclear fission?

While playing with prisms, Sushweta arranged three prisms as shown below (2nd prism inverted with respect to the other two) and made sunlight fall on the 1st prism.The colour(s) she would observe in regions A, B and C are respectively:

20waves passes throw a point in 2sec . If the distance between the crest and the adjacent troughs is 1.5 m calculate the frequency, wavelength and velocity.

A rectangular piece of paper of width 20 cm and length 44 cm is rolled along its width to form cylinder. What is the volume of the cylinder so formed?

How is petroleum formed?

Centifugal force is called a pseudo force-why

The values of two resistors are 5.0+-0.2 k ohm and 10.0+-0.1 k ohm.what is the % error in the equivalent resistance when they are connected in parallel?

What is union

3. A light and a heavy body have equal momenta. Which one has greater K.E [AIIMS 1998; UPSEAT 2000; JIPMER 2001; Kerala PMT 2004] (a) The light body (c) The K.E. are equal (b) The heavy body (d) Data is incomplete

An equilateral prism has angle of minimum deviation 30^° .Find total deviation if a ray is incident normally on a surface

In the given figure, the galvanometer does not have a deflection if:​

why cathode rays trace circular path when pass through magnetic field?

The spot speeds (expressed in km/hr) observed at a road section are 66,62,45,79,32,51,56,60,53 and 49, the median speed (expressed in km/hr) is (Note: answer with one decimal accuracy)54.5

write the condition for rotational equilibrium (take torque bout centre of gravity)

two forces equal to P and 2P newton act on a particle. If the first be doubled and the second be increased by 20 newton, the direction of the resul†an t is unaltered. Find the value of P

In the circuit shown in figure the internal resistance of the cell is negligible. For the value of R=40xΩ, no current flows through the galvanometer. What is x?(Integer value)

the distance between the two charges 25 microcoulomb anf 36microcoulomb is 11cm

a block of mass m is being pulled upon the rough inclined plane by a man delivering cons†an t power P. the coefficient of friction between the block and incline is u. the maximum speed of block during ascent is ?

why is the charge quantised

6. A water sample contains 9.5 % MgCl2 and 11.7% NaCl by mass Assuming 80% ionisation of each , find the Boiling point of water sample (Boling point of pure water is 100 ^° C

An electron enters a magnetic field of intensity 8T with a velocity 2×106 m/s in a direction at an angle of 90∘ with the field. The force acting on the electron is

A ball of mass 10g is dropped from a certain height.At 50m height its KE is equal to its PE. From what height was it dropped?

Calculate the value of acceleration due to gravity at height R above Earth’s surface in terms of g, where g is acceleration due to gravity at Earth surface and R is radius of Earth.

A: the acceleration due to gravity for an object is independent from its mass.R: the value of g depends on mass of the planet

A ball is dropped from a height of 10 m. If the energy of the ball reduces by 40% after striking the ground, how much high can the ball bounce back? (g=10 ms−2)

The astigmatic eye has a problem in viewing images uniformly on which lines?

the first ionisation enthaly of lithium is 5.41 e.v and electron gain enthalpy of chlorine is 3.61 e.v. the △ H in Kj/mole for the reaction li(g) + cl(g) → li^+(g) + cl^-(g) is 1.737×10^{x }kj/mole. what is the value of 'x'?

If current is alternating at our homes so our fans also run back and forth why isn't a fan do that.

Which photoreceptor is responsible for colour vision of our eye?

Two canoes are 10 m apart in a lake. Each bobs up and down with a period of 4.0 s. When one canoe is at its highest point, the other canoe is at its lowest point. Both the canoes are always within a single cycle of waves. Determine the speed of the wave.

You are given three mirrors:- concave, convex and plane. How will you indentify them without touching them?

Choose the word which best fills the blank from the four options given. When the teacher asked Ravi a question, he gave her a blank ___.

What is coal gas

For two resistors R1 and R2 connected in parallel find relative error in their equivalent resistance if R1=(50+-2) and R2=(100+-3)ohm

75.two identical thin isosceles prism of refractive angle A and refractive index meu are placed with their bases touching each other .two parallel rays of light are incident on the system as shown .The distance of the point where the rays converge from the prism is approximately given by 1)h/(u-1)A

Name the safety devices which are connected to the live wire of a household electrical circuit.

47. Refracting angle of a Prism is A and refractive index of the material of the prism is cotA/2.Find the angle of minimum deviation.

Upper oesophageal sphincter is made up of_ and lower oesophageal sphincter of _.

In the given figure, the galvanometer does not have a deflection if: