9478 + Interview Questions in Physics Page 87 InterviewSolution

4301.	10.Find the minimum force that can move the block. Also find the direction of force with respect to horizonta
Answer» 10.Find the minimum force that can move the block. Also find the direction of force with respect to horizonta

Discussion

4302.	Why are convex mirrors not used in flood light even though they can diverge light
Answer» Why are convex mirrors not used in flood light even though they can diverge light

Discussion

4303.	Which of the following statement(s) is/are correct according to the laws of reflection?
Answer» Which of the following statement(s) is/are correct according to the laws of reflection?

Discussion

4304.	What is a density bottle? Why do we use a density bottle for measuring the density of the liquids? What is the process through which we can measure through the density bottle?
Answer» What is a density bottle? Why do we use a density bottle for measuring the density of the liquids? What is the process through which we can measure through the density bottle?

Discussion

4305.	A body of mass 10 kg and volume 0.5 m3 is floating in a liquid. What is the density of the body?
Answer» A body of mass $10 k g$ and volume $0.5 m^{3}$ is floating in a liquid. What is the density of the body?

Discussion

4306.	Friction is an example of _________ force
Answer» Friction is an example of _________ force

Discussion

4307.	What is a wave front Draw the shapes of the refracted or reflected wavefront when it passes through a) prism b)convex lens c) concave mirror
Answer» What is a wave front Draw the shapes of the refracted or reflected wavefront when it passes through a) prism b)convex lens c) concave mirror

Discussion

4308.	What is meant by zero error of a screw gauge?
Answer» What is meant by zero error of a screw gauge?

Discussion

4309.	Where does an image form in our eye?
Answer» Where does an image form in our eye?

Discussion

4310.	Two bodies of masses m1 and m2 are connected by light string which passes over a frictionless massless pulley. If pulley is moving upward with uniform acceleration g/2, find out tension in string?
Answer» Two bodies of masses m1 and m2 are connected by light string which passes over a frictionless massless pulley. If pulley is moving upward with uniform acceleration g/2, find out tension in string?

Discussion

4311.	If the radius of the soap bubble is r,its volume V and excess pressure inside it is P then 1/PV is how proportional to r
Answer» If the radius of the soap bubble is r,its volume V and excess pressure inside it is P then 1/PV is how proportional to r

Discussion

4312.	The human ear can detect continuous sounds in the frequency range from 20Hz to 20kHz. Assuming that the speed of sound in air is 330m/s for all frequencies, calculate the wavelengths corresponding to the given extreme frequencies of the audible range.
Answer» The human ear can detect continuous sounds in the frequency range from 20Hz to 20kHz. Assuming that the speed of sound in air is 330m/s for all frequencies, calculate the wavelengths corresponding to the given extreme frequencies of the audible range.

Discussion

4313.	Question 57Choose a letter x, y, z, p etc...., wherever necessary, for the unknown (variable) and write the corresponding expressions for the given statement:20oC less than the present temperature.
Answer» Question 57 Choose a letter x, y, z, p etc...., wherever necessary, for the unknown (variable) and write the corresponding expressions for the given statement: $20^{o} C$ less than the present temperature.

4313.

Question 57Choose a letter x, y, z, p etc...., wherever necessary, for the unknown (variable) and write the corresponding expressions for the given statement:20oC less than the present temperature.

Answer»

Question 57

Choose a letter x, y, z, p etc...., wherever necessary, for the unknown (variable) and write the corresponding expressions for the given statement:

$20^{o} C$ less than the present temperature.

Discussion

4314.	What is the convention used to define a particular charge acquired as positive and negative? [2 MARKS]
Answer» What is the convention used to define a particular charge acquired as positive and negative? [2 MARKS]

Discussion

4315.	banana bon
Answer» banana bon

Discussion

4316.	The permeability is maximum for
Answer» The permeability is maximum for

Discussion

4317.	A firecracker has a sound intensity od 145 dB, which is exactly an average of sound intensities of jet engine at take off and fighter jet launch. Calculate the required scales for jet engine at take off and fighter jet.
Answer» A firecracker has a sound intensity od 145 dB, which is exactly an average of sound intensities of jet engine at take off and fighter jet launch. Calculate the required scales for jet engine at take off and fighter jet.

Discussion

4318.	Two musical notes of the same frequency and same amplitude are played on two different instruments. Their wave patterns are as shown below.How do they differ in (a) loudness (b) pitch and (c) quality?
Answer» Two musical notes of the same frequency and same amplitude are played on two different instruments. Their wave patterns are as shown below. How do they differ in (a) loudness (b) pitch and (c) quality?

Discussion

4319.	If the axis of rotation of the earth were extended into space then it would pass close to
Answer» If the axis of rotation of the earth were extended into space then it would pass close to

Discussion

4320.	36. Four equal mass of bodies are kept four corners of the square, then find force on one of mass due to other three?
Answer» 36. Four equal mass of bodies are kept four corners of the square, then find force on one of mass due to other three?

Discussion

4321.	what type of field are produced by accelerated char
Answer» what type of field are produced by accelerated char

Discussion

4322.	A gas undergoes change from state A to state B. In this the heat absorbed and work done by the gas is 5J and 8J , respectively. Now the gas is brought back to A by another process during which 3 j of heat is evolved. In this reverse process of B to A a) 6j of work done will be done by the surrounding on gasb) 6j of work done by the gas.
Answer» A gas undergoes change from state A to state B. In this the heat absorbed and work done by the gas is 5J and 8J , respectively. Now the gas is brought back to A by another process during which 3 j of heat is evolved. In this reverse process of B to A a) 6j of work done will be done by the surrounding on gas b) 6j of work done by the gas.

Discussion

4323.	A child staying in a coastal region uses his tester (consisting of a magnetic compass) with drinking water and sea water. He observes that
Answer» A child staying in a coastal region uses his tester (consisting of a magnetic compass) with drinking water and sea water. He observes that

Discussion

4324.	Explain the concept of principled distance.
Answer» Explain the concept of principled distance.

Discussion

4325.	When is it easier to slide on ice -while wearing new shoes or old shoes?
Answer» When is it easier to slide on ice -while wearing new shoes or old shoes?

Discussion

4326.	A tuning fork vibrating at frequency 1000 Hz produces resonance in a resonance column tube. The upper end is open and the lower end is closed by the water whose height can be varied. The successive resonances are observed at lengths 10 cm and 27 cm. Then, the speed of sound in air is [neglect end corrections]
Answer» A tuning fork vibrating at frequency $1000 Hz$ produces resonance in a resonance column tube. The upper end is open and the lower end is closed by the water whose height can be varied. The successive resonances are observed at lengths $10 cm$ and $27 cm$ . Then, the speed of sound in air is [neglect end corrections]

Discussion

4327.	What is apparent depth
Answer» What is apparent depth

Discussion

4328.	Why is the operation of limit(delta t--0)of quantity used to calculate the instantaneous velocity?
Answer» Why is the operation of limit(delta t--0)of quantity used to calculate the instantaneous velocity?

Discussion

4329.	An electric cell has ___ terminals.
Answer» An electric cell has ___ terminals.

Discussion

4330.	The unit of moment of force is
Answer» The unit of moment of force is

Discussion

4331.	3. Ram moves in east direction at a speed of 6 m/sand Shyam moves 30^° east of north at a speeof 6 m/s. The magnitude of their relative velocity is
Answer» 3. Ram moves in east direction at a speed of 6 m/sand Shyam moves 30^° east of north at a speeof 6 m/s. The magnitude of their relative velocity is

Discussion

4332.	Explain why does a swimming pool appears shallower than it actually is .Obtain an expression for the normal displacement of an object immersed in water.
Answer» Explain why does a swimming pool appears shallower than it actually is .Obtain an expression for the normal displacement of an object immersed in water.

Discussion

4333.	Question 6 Two mirrors A and B are placed at right angles to each other as shown in the figure. A ray of light incident on mirror A at an angle of 25∘ falls on mirror B after reflection. The angle of reflection for the ray reflected from mirror B would be (a) 25∘ (b) 50∘ (c) 65∘ (d) 100∘
Answer» Question 6 Two mirrors A and B are placed at right angles to each other as shown in the figure. A ray of light incident on mirror A at an angle of $25^{\circ}$ falls on mirror B after reflection. The angle of reflection for the ray reflected from mirror B would be (a) $25^{\circ}$ (b) $50^{\circ}$ (c) $65^{\circ}$ (d) $100^{\circ}$

4333.

Question 6 Two mirrors A and B are placed at right angles to each other as shown in the figure. A ray of light incident on mirror A at an angle of 25∘ falls on mirror B after reflection. The angle of reflection for the ray reflected from mirror B would be (a) 25∘ (b) 50∘ (c) 65∘ (d) 100∘

Answer»

Question 6

Two mirrors A and B are placed at right angles to each other as shown in the figure.

A ray of light incident on mirror A at an angle of $25^{\circ}$ falls on mirror B after reflection. The angle of reflection for the ray reflected from mirror B would be
(a) $25^{\circ}$
(b) $50^{\circ}$
(c) $65^{\circ}$
(d) $100^{\circ}$

Discussion

4334.	Which of the following is not a planet? (a) Mercury (b) Saturn (c) Mars (d) Moon
Answer» Which of the following is not a planet? (a) Mercury (b) Saturn (c) Mars (d) Moon

4334.

Which of the following is not a planet? (a) Mercury (b) Saturn (c) Mars (d) Moon

Answer»

Which of the following is not a planet?

(a) Mercury

(b) Saturn

(c) Mars

(d) Moon

Discussion

4335.	Starting from rest, the velocity of a freely falling body, after one second is ___m/s. (Round your answer to the nearest integer)
Answer» Starting from rest, the velocity of a freely falling body, after one second is ___m/s. (Round your answer to the nearest integer)

Discussion

4336.	What is a group of atoms carrying a charge called? ___
Answer» What is a group of atoms carrying a charge called? ___

Discussion

4337.	A mixture of NaI and NaCl on reaction with H2SO4 gave Na2SO4 equal to weight if original mixture taken.The percentage of NaI in the mixture is
Answer» A mixture of NaI and NaCl on reaction with H2SO4 gave Na2SO4 equal to weight if original mixture taken.The percentage of NaI in the mixture is

Discussion

4338.	Weight of a body decreases by 1.5%, when it is raised to a height h above the surface of earth. When the same body is taken to some depth h in a mine, its weight will show 1) 0.75% increase 2) 3.0% decrease 3) 0.75% decrease 4) 1.5% decrease
Answer» Weight of a body decreases by 1.5%, when it is raised to a height h above the surface of earth. When the same body is taken to some depth h in a mine, its weight will show 1) 0.75% increase 2) 3.0% decrease 3) 0.75% decrease 4) 1.5% decrease

Discussion

4339.	7.What is difference between i)corm and bulb ii)runner and stolon?
Answer» 7.What is difference between i)corm and bulb ii)runner and stolon?

Discussion

4340.	Question 15 A star is ten light years away from the earth. Suppose it brightens up suddenly today. After how much time shall we see this change?
Answer» Question 15 A star is ten light years away from the earth. Suppose it brightens up suddenly today. After how much time shall we see this change?

Discussion

4341.	In which part of the sky can you find Venus if it is visible as an evening star?
Answer» In which part of the sky can you find Venus if it is visible as an evening star?

Discussion

4342.	What works happen if the earth's gravity falls
Answer» What works happen if the earth's gravity falls

Discussion

4343.	In an electroscope, the foil strips that move apart on detecting a charged body would come back to their initial position after some time. Identify the reason.
Answer» In an electroscope, the foil strips that move apart on detecting a charged body would come back to their initial position after some time. Identify the reason.

Discussion

4344.	When a piece of plastic becomes positively charged it has:
Answer» When a piece of plastic becomes positively charged it has:

Discussion

4345.	An amount Q of heat is added to a monoatomic ideal gas in a process in which the gas performs a work Q2 on its surrounding. The molar heat capacity for the process is ( R is universal gas constant)
Answer» An amount $Q$ of heat is added to a monoatomic ideal gas in a process in which the gas performs a work $\frac{Q}{2}$ on its surrounding. The molar heat capacity for the process is $($ $R$ is universal gas constant $)$

Discussion

4346.	Where does the Moon rise and set?
Answer» Where does the Moon rise and set?

Discussion

4347.	electric potential difference between two points due to uniformly charged non conducting long sheet
Answer» electric potential difference between two points due to uniformly charged non conducting long sheet

Discussion

4348.	Two batteries of different emf and internal resis†an ce connected in series with each other and with an external load resistor the current is 3 Awhen the polarity of one battery is reversed the current becomes 1Athe ratio of emf of two batteries is
Answer» Two batteries of different emf and internal resis†an ce connected in series with each other and with an external load resistor the current is 3 Awhen the polarity of one battery is reversed the current becomes 1Athe ratio of emf of two batteries is

Discussion

4349.	Alcohol has ___ boiling point than water.
Answer» Alcohol has ___ boiling point than water.

Discussion

4350.	The mass of Mars is 1/9 times that of the Earth & radius is 1/2 times that of the Earth. What is the weight of a body on Mars, having a mass of 1000 kg ?
Answer» The mass of Mars is $1 / 9$ times that of the Earth & radius is $1 / 2$ times that of the Earth. What is the weight of a body on Mars, having a mass of $1000 kg$ ?

Discussion

Explore topic-wise InterviewSolutions in .

10.Find the minimum force that can move the block. Also find the direction of force with respect to horizonta

Why are convex mirrors not used in flood light even though they can diverge light

Which of the following statement(s) is/are correct according to the laws of reflection?

What is a density bottle? Why do we use a density bottle for measuring the density of the liquids? What is the process through which we can measure through the density bottle?

A body of mass 10 kg and volume 0.5 m3 is floating in a liquid. What is the density of the body?

Friction is an example of _________ force

What is a wave front Draw the shapes of the refracted or reflected wavefront when it passes through a) prism b)convex lens c) concave mirror

What is meant by zero error of a screw gauge?

Where does an image form in our eye?

Two bodies of masses m1 and m2 are connected by light string which passes over a frictionless massless pulley. If pulley is moving upward with uniform acceleration g/2, find out tension in string?

If the radius of the soap bubble is r,its volume V and excess pressure inside it is P then 1/PV is how proportional to r

The human ear can detect continuous sounds in the frequency range from 20Hz to 20kHz. Assuming that the speed of sound in air is 330m/s for all frequencies, calculate the wavelengths corresponding to the given extreme frequencies of the audible range.

Question 57Choose a letter x, y, z, p etc...., wherever necessary, for the unknown (variable) and write the corresponding expressions for the given statement:20oC less than the present temperature.

What is the convention used to define a particular charge acquired as positive and negative? [2 MARKS]

banana bon

The permeability is maximum for

A firecracker has a sound intensity od 145 dB, which is exactly an average of sound intensities of jet engine at take off and fighter jet launch. Calculate the required scales for jet engine at take off and fighter jet.

Two musical notes of the same frequency and same amplitude are played on two different instruments. Their wave patterns are as shown below.How do they differ in (a) loudness (b) pitch and (c) quality?

If the axis of rotation of the earth were extended into space then it would pass close to

36. Four equal mass of bodies are kept four corners of the square, then find force on one of mass due to other three?

what type of field are produced by accelerated char

A child staying in a coastal region uses his tester (consisting of a magnetic compass) with drinking water and sea water. He observes that

Explain the concept of principled distance.

When is it easier to slide on ice -while wearing new shoes or old shoes?

What is apparent depth

Why is the operation of limit(delta t--0)of quantity used to calculate the instantaneous velocity?

An electric cell has ___ terminals.

The unit of moment of force is

3. Ram moves in east direction at a speed of 6 m/sand Shyam moves 30^° east of north at a speeof 6 m/s. The magnitude of their relative velocity is

Explain why does a swimming pool appears shallower than it actually is .Obtain an expression for the normal displacement of an object immersed in water.

Question 6 Two mirrors A and B are placed at right angles to each other as shown in the figure. A ray of light incident on mirror A at an angle of 25∘ falls on mirror B after reflection. The angle of reflection for the ray reflected from mirror B would be (a) 25∘ (b) 50∘ (c) 65∘ (d) 100∘

Which of the following is not a planet? (a) Mercury (b) Saturn (c) Mars (d) Moon

Starting from rest, the velocity of a freely falling body, after one second is ___m/s. (Round your answer to the nearest integer)

What is a group of atoms carrying a charge called? ___

A mixture of NaI and NaCl on reaction with H2SO4 gave Na2SO4 equal to weight if original mixture taken.The percentage of NaI in the mixture is

Weight of a body decreases by 1.5%, when it is raised to a height h above the surface of earth. When the same body is taken to some depth h in a mine, its weight will show 1) 0.75% increase 2) 3.0% decrease 3) 0.75% decrease 4) 1.5% decrease

7.What is difference between i)corm and bulb ii)runner and stolon?

Question 15 A star is ten light years away from the earth. Suppose it brightens up suddenly today. After how much time shall we see this change?

In which part of the sky can you find Venus if it is visible as an evening star?

What works happen if the earth's gravity falls

In an electroscope, the foil strips that move apart on detecting a charged body would come back to their initial position after some time. Identify the reason.

When a piece of plastic becomes positively charged it has:

An amount Q of heat is added to a monoatomic ideal gas in a process in which the gas performs a work Q2 on its surrounding. The molar heat capacity for the process is ( R is universal gas constant)

Where does the Moon rise and set?

electric potential difference between two points due to uniformly charged non conducting long sheet

Two batteries of different emf and internal resis†an ce connected in series with each other and with an external load resistor the current is 3 Awhen the polarity of one battery is reversed the current becomes 1Athe ratio of emf of two batteries is

Alcohol has ___ boiling point than water.

The mass of Mars is 1/9 times that of the Earth &amp; radius is 1/2 times that of the Earth. What is the weight of a body on Mars, having a mass of 1000 kg ?

The mass of Mars is 1/9 times that of the Earth & radius is 1/2 times that of the Earth. What is the weight of a body on Mars, having a mass of 1000 kg ?