9478 + Interview Questions in Physics Page 2 InterviewSolution

51.	What is an artificial satellite? Name any two artificial satellites launched by our country.
Answer» What is an artificial satellite? Name any two artificial satellites launched by our country.

Discussion

52.	two perpendicular forces of magnitudes 10N and 5N act at a point.find their resul†an
Answer» two perpendicular forces of magnitudes 10N and 5N act at a point.find their resul†an

Discussion

53.	Moon completes one revolution around earth in approximately ___days.
Answer» Moon completes one revolution around earth in approximately ___days.

Discussion

54.	6 identical capacitors are joined in series and are charged with a battery of 60 V. Now the battery is removed and they are joined in parallel with each other. In this condition what would be the potential difference between the free plates In the combination,?
Answer» 6 identical capacitors are joined in series and are charged with a battery of 60 V. Now the battery is removed and they are joined in parallel with each other. In this condition what would be the potential difference between the free plates In the combination,?

Discussion

55.	I rub a straw with a sheet of paper and it becomes a charged body and attracts an uncharged body. How and why does a uncharged body become a charged body? Please explain the concept of charged and uncharged bodies.
Answer» I rub a straw with a sheet of paper and it becomes a charged body and attracts an uncharged body. How and why does a uncharged body become a charged body? Please explain the concept of charged and uncharged bodies.

55.

I rub a straw with a sheet of paper and it becomes a charged body and attracts an uncharged body. How and why does a uncharged body become a charged body? Please explain the concept of charged and uncharged bodies.

Answer»

I rub a straw with a sheet of paper and it becomes a charged body and attracts an uncharged body.

How and why does a uncharged body become a charged body? Please explain the concept of charged and uncharged bodies.

Discussion

56.	A person on the top of a coconut tree of height 10 m looks at the bottom of a swimming pool of depth 2 m.Determine the apparent position of the pool viewed by the person (Refractive index of water=4/3)(a) 80/3 m (b) 4/3 m(c) 23/2 m (d) 30/7 m
Answer» A person on the top of a coconut tree of height 10 m looks at the bottom of a swimming pool of depth 2 m.Determine the apparent position of the pool viewed by the person (Refractive index of water=4/3) (a) 80/3 m (b) 4/3 m (c) 23/2 m (d) 30/7 m

Discussion

57.	Question 4 (ii)State whether the following statement is true or false. Give reasons for your answer.Every integer is a whole number.
Answer» Question 4 (ii) State whether the following statement is true or false. Give reasons for your answer. Every integer is a whole number.

57.

Question 4 (ii)State whether the following statement is true or false. Give reasons for your answer.Every integer is a whole number.

Answer»

Question 4 (ii)

State whether the following statement is true or false. Give reasons for your answer.

Every integer is a whole number.

Discussion

58.	Which of the following could be caused by an earthquake?
Answer» Which of the following could be caused by an earthquake?

Discussion

59.	Which medium does sound produce large
Answer» Which medium does sound produce large

Discussion

60.	Why is static electricity also called friction electricity?
Answer» Why is static electricity also called friction electricity?

Discussion

61.	A small block slides down from top of hemisphere of radius r. It is assumed that there is no friction between block and hemisphere. At what height 'h' will the block lose contact with surface of sphere?
Answer» A small block slides down from top of hemisphere of radius r. It is assumed that there is no friction between block and hemisphere. At what height 'h' will the block lose contact with surface of sphere?

Discussion

62.	In Pressure chapter there is no formula of pressure
Answer» In Pressure chapter there is no formula of pressure

Discussion

63.	Choose the denser medium from the given figure:
Answer» Choose the denser medium from the given figure:

63.

Choose the denser medium from the given figure:

Answer»

Choose the denser medium from the given figure:

Discussion

64.

Here is some information downloaded from the Internet on Ile Amsterdam. You can view images of the isle if you go online. Location South Indian Ocean, between southern most parts of Australia and South Africa Latitude and longitude 37 92 S, 77 67 E Sovereignty France Political status notes Part of French Southern and Antarctic Lands Population 35 Census notes Meteorological station staff Land area in square kilometres 86

Answer» Here is some information downloaded from the Internet on Ile Amsterdam. You can view images of the isle if you go online.

Location	South Indian Ocean, between southern most parts of Australia and South Africa
Latitude and longitude	37 92 S, 77 67 E
Sovereignty	France
Political status notes	Part of French Southern and Antarctic Lands
Population	35
Census notes	Meteorological station staff
Land area in square kilometres	86

Discussion

65.	44.A stone falling from the top of a tower covers half of its height in last second of its motion, the total height is?
Answer» 44.A stone falling from the top of a tower covers half of its height in last second of its motion, the total height is?

Discussion

66.	A block weighing 400 N is placed on the ground. Calculate the pressure exerted by the block on the ground?
Answer» A block weighing $400 N$ is placed on the ground. Calculate the pressure exerted by the block on the ground?

Discussion

67.	How does electric discharge in lightning occur if air is a bad conductor?
Answer» How does electric discharge in lightning occur if air is a bad conductor?

Discussion

68.	A 3 m long simply supported beam of uniform cross section is subjected to a uniformly distirbuted load w=20 kN/m in the central 1 m as shown in the figure.If the flexural rigidity (EI) of the beam is 30×106 N−m2, the maximum slope (expressed in readians) of the deformed beam is
Answer» A 3 m long simply supported beam of uniform cross section is subjected to a uniformly distirbuted load w=20 kN/m in the central 1 m as shown in the figure. If the flexural rigidity (EI) of the beam is $30 \times 10^{6}$ $N - m^{2}$ , the maximum slope (expressed in readians) of the deformed beam is

Discussion

69.	To extinguish a fire, you can remove the combustible substance. What other methods can you use?
Answer» To extinguish a fire, you can remove the combustible substance. What other methods can you use?

Discussion

70.	what is conservative and non-conservative forces. normal reaction and tension comes under which category?
Answer» what is conservative and non-conservative forces. normal reaction and tension comes under which category?

Discussion

71.	What is the portion of the eye called where there are no sensory cells to support vision? [2 MARKS]
Answer» What is the portion of the eye called where there are no sensory cells to support vision? [2 MARKS]

Discussion

72.	83 Which of the following complexes is strongest reducing agent : (1)[Co(CN)6]4- (2)[Co(CN)6]3- (3)[Ag(CN)2]1- (4)[Co(CN)4]3-
Answer» 83 Which of the following complexes is strongest reducing agent : (1)[Co(CN)6]4- (2)[Co(CN)6]3- (3)[Ag(CN)2]1- (4)[Co(CN)4]3-

Discussion

73.	a ball falls freely from rest and the total dis†an ce covered by it in the last second of its motion is equal to dis†an ce covered by it in the first five seconds of its motion .the total time of the stone when it is in motion would b
Answer» a ball falls freely from rest and the total dis†an ce covered by it in the last second of its motion is equal to dis†an ce covered by it in the first five seconds of its motion .the total time of the stone when it is in motion would b

Discussion

74.	What are the differences between conductor and electrolyte substance?
Answer» What are the differences between conductor and electrolyte substance?

Discussion

75.	Is rainwater a good conductor of electricity?
Answer» Is rainwater a good conductor of electricity?

Discussion

76.	A box of mass 8 kg is placed on a rough inclined plane of inclination theta. Its downward motion can be prevented by applying an upward pull F and it can be mad to slide upwards by applying a force of 2F. Find the coefficient of friction between the box and inclined plane.
Answer» A box of mass 8 kg is placed on a rough inclined plane of inclination theta. Its downward motion can be prevented by applying an upward pull F and it can be mad to slide upwards by applying a force of 2F. Find the coefficient of friction between the box and inclined plane.

Discussion

77.	The main reason why we have two ears is:
Answer» The main reason why we have two ears is:

Discussion

78.	A substance which produces lots of heat on burning is called ______
Answer» A substance which produces lots of heat on burning is called ______

Discussion

79.	Do all the molecules of a liquid take part is evaporation? If not, explain your answer.
Answer» Do all the molecules of a liquid take part is evaporation? If not, explain your answer.

Discussion

80.	In a calorimeter of water equivalent 20 g, water of mass 1.1 kg is taken at 288 K temperature. If steam at temperature 373 K is passed through it and temperature of water increases by 6.5 ∘C, then the mass of steam condensed is[Take, s=1 cal/ ∘C g, L=540 cal/g ]
Answer» In a calorimeter of water equivalent $20 g$ , water of mass $1.1 kg$ is taken at $288 K$ temperature. If steam at temperature $373 K$ is passed through it and temperature of water increases by $6.5^{\circ} C$ , then the mass of steam condensed is [Take, $s = 1 cal /^{\circ} C g, L = 540 cal/g$ ]

Discussion

81.	Repected sir, I had a doubt on force and pressure numericals. The numerical down. Two blocks of different metals but identical in shape and size are acted upon by equal forces such that the acceleration of the second block is 3 times more than that of first block. What is the ratio of the mass of the second block respect to the first block.
Answer» Repected sir, I had a doubt on force and pressure numericals. The numerical down. Two blocks of different metals but identical in shape and size are acted upon by equal forces such that the acceleration of the second block is 3 times more than that of first block. What is the ratio of the mass of the second block respect to the first block.

81.

Repected sir, I had a doubt on force and pressure numericals. The numerical down. Two blocks of different metals but identical in shape and size are acted upon by equal forces such that the acceleration of the second block is 3 times more than that of first block. What is the ratio of the mass of the second block respect to the first block.

Answer»

Repected sir,

I had a doubt on force and pressure numericals. The numerical down.

Two blocks of different metals but identical in shape and size are acted upon by equal forces such that the acceleration of the second block is 3 times more than that of first block. What is the ratio of the mass of the second block respect to the first block.

Discussion

82.	25. If the boiling point of water is 95^° F , what will be the reduction at Celcius scale?
Answer» 25. If the boiling point of water is 95^° F , what will be the reduction at Celcius scale?

Discussion

83.

Match the following. ‘A’ ‘B’ (a) Image in a plane mirror 1. Fluorescent paint (b) Regular reflection 2. Smooth surface (c) Angle of incidence = 30° 3. As big as the object (d) A shiny image 4. Angle of reflection = 30° 5. Periscope

Answer»

Match the following.

‘A’		‘B’
(a)	Image in a plane mirror		1.	Fluorescent paint
(b)	Regular reflection		2.	Smooth surface
(c)	Angle of incidence = 30°		3.	As big as the object
(d)	A shiny image		4.	Angle of reflection = 30°
			5.	Periscope

Discussion

84.	What is density bottle? How is it used to find the density of a liquid?
Answer» What is density bottle? How is it used to find the density of a liquid?

Discussion

85.	16.An engine can pull 4 coaches at max. speed 20m/s. Mass of engine is twice that of one coach. Assuming resistive force to be proportional to the weight, approximate max. speed of engine when it pulls 12 and 6 coaches respectively.
Answer» 16.An engine can pull 4 coaches at max. speed 20m/s. Mass of engine is twice that of one coach. Assuming resistive force to be proportional to the weight, approximate max. speed of engine when it pulls 12 and 6 coaches respectively.

Discussion

86.	Chemical reactions in which the electrical energy is consumed or produced are known as:
Answer» Chemical reactions in which the electrical energy is consumed or produced are known as:

Discussion

87.	When electric current is passed through an incandescent bulb, the bulb gives light. Identify the proper reason.
Answer» When electric current is passed through an incandescent bulb, the bulb gives light. Identify the proper reason.

Discussion

88.	A battery of emf 10V and internal resistance 0.5 ohm is to be charged by a battery charger which supplies 110V dc. The resistance that must be connected in series with the battery to limit charging current to 5A is R and terminal voltage across the battery during charging is Vt. Then R and Vt are respectively?
Answer» A battery of emf 10V and internal resistance 0.5 ohm is to be charged by a battery charger which supplies 110V dc. The resistance that must be connected in series with the battery to limit charging current to 5A is R and terminal voltage across the battery during charging is Vt. Then R and Vt are respectively?

Discussion

89.	How does the eye-lens differ from the ordinary convex lens made of glass?
Answer» How does the eye-lens differ from the ordinary convex lens made of glass?

Discussion

90.	1)Why Density of liquid is intermediate?2) What is the defination of BEC ( Bose Einstein Condensate)?
Answer» 1)Why Density of liquid is intermediate? 2) What is the defination of BEC ( Bose Einstein Condensate)?

Discussion

91.	The motion of second's hankd of a clock uniform or accelerated
Answer» The motion of second's hankd of a clock uniform or accelerated

Discussion

92.	Explain the underlying principle and working of an electric generator by drawing a labelled diagram. What is the function of brushes?
Answer» Explain the underlying principle and working of an electric generator by drawing a labelled diagram. What is the function of brushes?

Discussion

93.	Write a program that has a user defined function to accept 2 numbers as parameters, if number 1 is less than number 2 then numbers are swapped and returned, i.e., number 2 is returned in place of number1 and number 1 is reformed in place of number 2, otherwise the same order is returned.
Answer» Write a program that has a user defined function to accept 2 numbers as parameters, if number 1 is less than number 2 then numbers are swapped and returned, i.e., number 2 is returned in place of number1 and number 1 is reformed in place of number 2, otherwise the same order is returned.

Discussion

94.	A person cannot see near objects clearly. What kind of lens should his spectacles have to correct this- convex or concave?
Answer» A person cannot see near objects clearly. What kind of lens should his spectacles have to correct this- convex or concave?

Discussion

95.	9.If pressure exerted at the bottom is equal in all four container as given below then mass per unit volume of liquid is maximum in Options:
Answer» 9.If pressure exerted at the bottom is equal in all four container as given below then mass per unit volume of liquid is maximum in Options:

Discussion

96.	weight of the body decreases by 1.5% when it is raised to a height h above the surface of the earth. when the same body is taken to same depth h in a ,mine its weight will sho
Answer» weight of the body decreases by 1.5% when it is raised to a height h above the surface of the earth. when the same body is taken to same depth h in a ,mine its weight will sho

Discussion

97.	46.A particle doing SHM amplitude 4cm and time period 12 sec . The ratio between time taken by it in going from mean position to 2cm and from 2cm to extreme position is A)1 B)1/3 C)1/4 D)1/2
Answer» 46.A particle doing SHM amplitude 4cm and time period 12 sec . The ratio between time taken by it in going from mean position to 2cm and from 2cm to extreme position is A)1 B)1/3 C)1/4 D)1/2

Discussion

98.	A body is projected up on a rough inclined plane having angle of inclination 45^0 If the coefficient of friction is 1/2 then retardation of the body is
Answer» A body is projected up on a rough inclined plane having angle of inclination 45^0 If the coefficient of friction is 1/2 then retardation of the body is

Discussion

99.	why does the value of friction goes up very to very high values if the surface is ultrasmooth?
Answer» why does the value of friction goes up very to very high values if the surface is ultrasmooth?

Discussion

100.	A shaft arrangment as shown in which variable distributed torque is acting, the reaction generated at right support is ?
Answer» A shaft arrangment as shown in which variable distributed torque is acting, the reaction generated at right support is ?

Discussion

Explore topic-wise InterviewSolutions in .

What is an artificial satellite? Name any two artificial satellites launched by our country.

two perpendicular forces of magnitudes 10N and 5N act at a point.find their resul†an

Moon completes one revolution around earth in approximately ___days.

6 identical capacitors are joined in series and are charged with a battery of 60 V. Now the battery is removed and they are joined in parallel with each other. In this condition what would be the potential difference between the free plates In the combination,?

I rub a straw with a sheet of paper and it becomes a charged body and attracts an uncharged body. How and why does a uncharged body become a charged body? Please explain the concept of charged and uncharged bodies.

A person on the top of a coconut tree of height 10 m looks at the bottom of a swimming pool of depth 2 m.Determine the apparent position of the pool viewed by the person (Refractive index of water=4/3)(a) 80/3 m (b) 4/3 m(c) 23/2 m (d) 30/7 m

Question 4 (ii)State whether the following statement is true or false. Give reasons for your answer.Every integer is a whole number.

Which of the following could be caused by an earthquake?

Which medium does sound produce large

Why is static electricity also called friction electricity?

A small block slides down from top of hemisphere of radius r. It is assumed that there is no friction between block and hemisphere. At what height 'h' will the block lose contact with surface of sphere?

In Pressure chapter there is no formula of pressure

Choose the denser medium from the given figure:

44.A stone falling from the top of a tower covers half of its height in last second of its motion, the total height is?

A block weighing 400 N is placed on the ground. Calculate the pressure exerted by the block on the ground?

How does electric discharge in lightning occur if air is a bad conductor?

A 3 m long simply supported beam of uniform cross section is subjected to a uniformly distirbuted load w=20 kN/m in the central 1 m as shown in the figure.If the flexural rigidity (EI) of the beam is 30×106 N−m2, the maximum slope (expressed in readians) of the deformed beam is

To extinguish a fire, you can remove the combustible substance. What other methods can you use?

what is conservative and non-conservative forces. normal reaction and tension comes under which category?

What is the portion of the eye called where there are no sensory cells to support vision? [2 MARKS]

83 Which of the following complexes is strongest reducing agent : (1)[Co(CN)6]4- (2)[Co(CN)6]3- (3)[Ag(CN)2]1- (4)[Co(CN)4]3-

a ball falls freely from rest and the total dis†an ce covered by it in the last second of its motion is equal to dis†an ce covered by it in the first five seconds of its motion .the total time of the stone when it is in motion would b

What are the differences between conductor and electrolyte substance?

Is rainwater a good conductor of electricity?

A box of mass 8 kg is placed on a rough inclined plane of inclination theta. Its downward motion can be prevented by applying an upward pull F and it can be mad to slide upwards by applying a force of 2F. Find the coefficient of friction between the box and inclined plane.

The main reason why we have two ears is:

A substance which produces lots of heat on burning is called ______

Do all the molecules of a liquid take part is evaporation? If not, explain your answer.

In a calorimeter of water equivalent 20 g, water of mass 1.1 kg is taken at 288 K temperature. If steam at temperature 373 K is passed through it and temperature of water increases by 6.5 ∘C, then the mass of steam condensed is[Take, s=1 cal/ ∘C g, L=540 cal/g ]

25. If the boiling point of water is 95^° F , what will be the reduction at Celcius scale?

Match the following. ‘A’ ‘B’ (a) Image in a plane mirror 1. Fluorescent paint (b) Regular reflection 2. Smooth surface (c) Angle of incidence = 30° 3. As big as the object (d) A shiny image 4. Angle of reflection = 30° 5. Periscope

What is density bottle? How is it used to find the density of a liquid?

16.An engine can pull 4 coaches at max. speed 20m/s. Mass of engine is twice that of one coach. Assuming resistive force to be proportional to the weight, approximate max. speed of engine when it pulls 12 and 6 coaches respectively.

Chemical reactions in which the electrical energy is consumed or produced are known as:

When electric current is passed through an incandescent bulb, the bulb gives light. Identify the proper reason.

How does the eye-lens differ from the ordinary convex lens made of glass?

1)Why Density of liquid is intermediate?2) What is the defination of BEC ( Bose Einstein Condensate)?

The motion of second's hankd of a clock uniform or accelerated

Explain the underlying principle and working of an electric generator by drawing a labelled diagram. What is the function of brushes?

Write a program that has a user defined function to accept 2 numbers as parameters, if number 1 is less than number 2 then numbers are swapped and returned, i.e., number 2 is returned in place of number1 and number 1 is reformed in place of number 2, otherwise the same order is returned.

A person cannot see near objects clearly. What kind of lens should his spectacles have to correct this- convex or concave?

9.If pressure exerted at the bottom is equal in all four container as given below then mass per unit volume of liquid is maximum in Options:

weight of the body decreases by 1.5% when it is raised to a height h above the surface of the earth. when the same body is taken to same depth h in a ,mine its weight will sho

46.A particle doing SHM amplitude 4cm and time period 12 sec . The ratio between time taken by it in going from mean position to 2cm and from 2cm to extreme position is A)1 B)1/3 C)1/4 D)1/2

A body is projected up on a rough inclined plane having angle of inclination 45^0 If the coefficient of friction is 1/2 then retardation of the body is

why does the value of friction goes up very to very high values if the surface is ultrasmooth?

A shaft arrangment as shown in which variable distributed torque is acting, the reaction generated at right support is ?