6277 + Interview Questions in Physics Page 77 InterviewSolution

3801.	What is converging and diverging light from a convex and a concave mirror?
Answer» What is converging and diverging light from a convex and a concave mirror?

Discussion

3802.	A driving mirror consists of a cylindrical mirror of radius of curvature 10 cm and the length over the curved surface is 10 cm. If the eye of the driver be assumed to be at a great distance from the mirror, then field of view in radian is 2.0 (3) 3.0 (2) 4.0 (4) 5.0
Answer» A driving mirror consists of a cylindrical mirror of radius of curvature 10 cm and the length over the curved surface is 10 cm. If the eye of the driver be assumed to be at a great distance from the mirror, then field of view in radian is 2.0 (3) 3.0 (2) 4.0 (4) 5.0

Discussion

3803.	why the hydrogen and oxygen gas mixed to forms water and other gas not to forms water
Answer» why the hydrogen and oxygen gas mixed to forms water and other gas not to forms water

Discussion

3804.	Define the following terms:
Answer» Define the following terms:

Discussion

3805.	A mono atomic ideal gas undergoes a process in which the ratio of P to V at any instant is constant and equal to 1.What is the molar heat capacity of the gas ?
Answer» A mono atomic ideal gas undergoes a process in which the ratio of P to V at any instant is constant and equal to 1.What is the molar heat capacity of the gas ?

Discussion

3806.	What makes paper to tear properly if we fold it and then tear it along the folded line?
Answer» What makes paper to tear properly if we fold it and then tear it along the folded line?

Discussion

3807.	In which type of collision it is possible that a ball strikes against the floor and returns with double the velocity?
Answer» In which type of collision it is possible that a ball strikes against the floor and returns with double the velocity?

Discussion

3808.	When sun rotation period is 27 day if all of a sudden sun become twice of it initial size What is change in time period
Answer» When sun rotation period is 27 day if all of a sudden sun become twice of it initial size What is change in time period

Discussion

3809.	What are the roles of a Meteorologist? [2 MARKS]
Answer» What are the roles of a Meteorologist? [2 MARKS]

Discussion

3810.	The mode of heat transfer between the sun and earth is ____.
Answer» The mode of heat transfer between the sun and earth is ____.

Discussion

3811.	Question 1What kind of mirror - concave, convex or plain - would be best suited for use in a solar cooker? Why?
Answer» Question 1 What kind of mirror - concave, convex or plain - would be best suited for use in a solar cooker? Why?

Discussion

3812.	Identify the following device: Which of the following objects can it detect? Belt Mobile phone Handkerchief Coins
Answer» Identify the following device: Which of the following objects can it detect? Belt Mobile phone Handkerchief Coins

Discussion

3813.	A conventional drained triaxial compression test was conducted on a normally consolidated clay sample under an effective confining pressure of 200 kPa. The deviator stress at failure was found to be 400 kPa. An identical specimen of the same clay sample is isotropically consolidated to a confining pressure of 200 kPa and subjected to standard undrained triaxial compression test. If the deviator stress at failure is 150 kPa, the pore pressure developed (in kPa, upto one decimal place) is .125
Answer» A conventional drained triaxial compression test was conducted on a normally consolidated clay sample under an effective confining pressure of 200 kPa. The deviator stress at failure was found to be 400 kPa. An identical specimen of the same clay sample is isotropically consolidated to a confining pressure of 200 kPa and subjected to standard undrained triaxial compression test. If the deviator stress at failure is 150 kPa, the pore pressure developed (in kPa, upto one decimal place) is . 125

Discussion

3814.	The image of an object is formed ______________.
Answer» The image of an object is formed ______________.

Discussion

3815.	An object 3 cm high is placed at a distance of 30 cm from a plane mirror. Where will the image form? What is the nature of the image? What are the characterstics of the image?
Answer» An object $3 cm$ high is placed at a distance of $30 cm$ from a plane mirror. Where will the image form? What is the nature of the image? What are the characterstics of the image?

Discussion

3816.	Why does a magnetic needle gets deflected when brought near a current carrying?
Answer» Why does a magnetic needle gets deflected when brought near a current carrying?

Discussion

3817.	Two identical conducting rods are first connected independently to two vessels, one containing water at 100o C and the other containing ice at 0o C. In the second case, the rods are joined end to end and connected to the same vessels. Let q1 and q2 g / s be the rate of melting of ice in two cases respectively. The ratio of q1q2 is
Answer» Two identical conducting rods are first connected independently to two vessels, one containing water at $100^{o} C$ and the other containing ice at $0^{o} C$ . In the second case, the rods are joined end to end and connected to the same vessels. Let $q_{1}$ and $q_{2}$ g / s be the rate of melting of ice in two cases respectively. The ratio of $\frac{q_{1}}{q_{2}}$ is

Discussion

3818.	State two ways by which the strength of the magnetic field of an electromagnet can be increased?
Answer» State two ways by which the strength of the magnetic field of an electromagnet can be increased?

Discussion

3819.	61.Why a long wire and thin wire is more resistance while short and thick wire is less resistance
Answer» 61.Why a long wire and thin wire is more resistance while short and thick wire is less resistance

Discussion

3820.	A body cools from 50 degree Celsius to 45 degree celsius in 5 minutes and 40 degree celsius in another 8 minutes the temperature of the surrounding is
Answer» A body cools from 50 degree Celsius to 45 degree celsius in 5 minutes and 40 degree celsius in another 8 minutes the temperature of the surrounding is

Discussion

3821.	34. Find the screening constant for gallium and hence the effective nuclear charge upon it.?
Answer» 34. Find the screening constant for gallium and hence the effective nuclear charge upon it.?

Discussion

3822.	The total number of compressions and rarefactions produced per second in a sound wave is 1000. The frequency of the sound wave is .....
Answer» The total number of compressions and rarefactions produced per second in a sound wave is 1000. The frequency of the sound wave is .....

Discussion

3823.	Question 24It is a hot summer day, Priyanshi and Ali are wearing cotton and nylon clothes respectively. Who do you think would be more comfortable and why?
Answer» Question 24 It is a hot summer day, Priyanshi and Ali are wearing cotton and nylon clothes respectively. Who do you think would be more comfortable and why?

Discussion

3824.	Find the missing values: BaseHeightArea of triangle15 cm…87 cm2…31.4 mm1256 mm222 cm…170.5 cm2
Answer» Find the missing values: $\begin{matrix} B a s e & H e i g h t & A r e a o f t r i a n g l e 15 c m & \dots & 87 c m^{2} \dots & 31.4 m m & 1256 m m^{2} 22 c m & \dots & 170.5 c m^{2} \end{matrix}$

Discussion

3825.	Why and in which direction do land breezes blow?
Answer» Why and in which direction do land breezes blow?

Discussion

3826.	Shown figure represents the symbol of :
Answer» Shown figure represents the symbol of :

3826.

Shown figure represents the symbol of :

Answer»

Shown figure represents the symbol of :

Discussion

3827.	Which temperature scale is used for scientific work?
Answer» Which temperature scale is used for scientific work?

Discussion

3828.	An odometer read 250 km when Mahesh started his car journey from his house to his office. After he reached there in an hour, it was showing 271 km. Find the average speed of his car.
Answer» An odometer read $250 k m$ when Mahesh started his car journey from his house to his office. After he reached there in an hour, it was showing $271 k m.$ Find the average speed of his car.

Discussion

3829.	A bridge is made from 20 m long iron rods. At temperature 18°C, the distance between two rods is 0.4 cm. Up to what temperature will the bridge be in good shape?
Answer» A bridge is made from 20 m long iron rods. At temperature 18°C, the distance between two rods is 0.4 cm. Up to what temperature will the bridge be in good shape?

Discussion

3830.	A particle moves in a straight line and its positionx at time t is given by x² = 2+t. Its accelerationis given by
Answer» A particle moves in a straight line and its positionx at time t is given by x² = 2+t. Its accelerationis given by

Discussion

3831.	Deepak is sitting next to Ashima in a fast-moving car. Is Ashima at rest or in motion with respect to Deepak?
Answer» Deepak is sitting next to Ashima in a fast-moving car. Is Ashima at rest or in motion with respect to Deepak?

Discussion

3832.	Expression and derivation of equivalent thermal conductivity K in parallel and series.
Answer» Expression and derivation of equivalent thermal conductivity K in parallel and series.

Discussion

3833.	How many types of reflection are there?
Answer» How many types of reflection are there?

Discussion

3834.	In a regular polygon of n sides each corner is at a distance r from center. Identical charges q are placed at (n – 1) corners. The electric field at center is
Answer» In a regular polygon of n sides each corner is at a distance r from center. Identical charges q are placed at (n – 1) corners. The electric field at center is

Discussion

3835.	Physics3. A laser used to weld detached retains emits lightwith a wavelength 652 nm in pulses that are of 20msduration. The average power during each pulse is0.6w. The energy in each pulse and in a singlephoton are0o16 T
Answer» Physics 3. A laser used to weld detached retains emits light with a wavelength 652 nm in pulses that are of 20ms duration. The average power during each pulse is 0.6w. The energy in each pulse and in a single photon are 0 o16 T

Discussion

3836.	25A Carnot's engine takes 300 cal of heat at 500and rejects 150 cal of heat to the sink. Thetemperature of sink is(1) 80 K(2) 120 K(3) 212 K(4) 250 K
Answer» 25A Carnot's engine takes 300 cal of heat at 500and rejects 150 cal of heat to the sink. Thetemperature of sink is(1) 80 K(2) 120 K(3) 212 K(4) 250 K

Discussion

3837.	State two phenomena from your surroundings which involve the transformation of heat energy.
Answer» State two phenomena from your surroundings which involve the transformation of heat energy.

Discussion

3838.	Metal cap of an electric cell is__________.
Answer» Metal cap of an electric cell is__________.

Discussion

3839.	An object is located at a height equal to radius of the earth.What will be it's weight (given mass=m)
Answer» An object is located at a height equal to radius of the earth.What will be it's weight (given mass=m)

Discussion

3840.	1.Displacement of a particle is given by 'x=3sin pi t' .Find the displacement travelled by particle from t=1/4sec to t=3/4sec
Answer» 1.Displacement of a particle is given by 'x=3sin pi t' .Find the displacement travelled by particle from t=1/4sec to t=3/4sec

Discussion

3841.	___ is the quantity derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines.
Answer» ___ is the quantity derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines.

Discussion

3842.	The volume of a cuboidal soap is 150 c.c. The length is 10 cm and breadth is 5 cm. Find its height.
Answer» The volume of a cuboidal soap is 150 c.c. The length is 10 cm and breadth is 5 cm. Find its height.

Discussion

3843.	49 1mol of non ideal gas internal energy ΔU=40Latm change with state from (1.0atm ,3.0L,200K) (4.0atm,5.0L,250K)changed.This process the change of enthalpy in Latm 1)43 2)57 3)42 4)none of these
Answer» 49 1mol of non ideal gas internal energy ΔU=40Latm change with state from (1.0atm ,3.0L,200K) (4.0atm,5.0L,250K)changed.This process the change of enthalpy in Latm 1)43 2)57 3)42 4)none of these

Discussion

3844.	87. A coin is placed on horizontal platform which undergoes vertical simple harmonic motion of angular frequency Omega the amplitude of oscillation is gradually increased the coin leave contact with the platform for first time? For an amplitude of gomega square For an amplitude of g square omega square At the highest point of the platform At the mean position of the platform
Answer» 87. A coin is placed on horizontal platform which undergoes vertical simple harmonic motion of angular frequency Omega the amplitude of oscillation is gradually increased the coin leave contact with the platform for first time? For an amplitude of gomega square For an amplitude of g square omega square At the highest point of the platform At the mean position of the platform

Discussion

3845.	How should one measure the temperature of a liquid with a laboratory thermometer?
Answer» How should one measure the temperature of a liquid with a laboratory thermometer?

Discussion

3846.	{ Q }2/15 A boy of mass }62kg is standing on skies kept }}{ on snow. Mass of each ski is }1kg and its base area is }}{800cm^2. What pressure will be exerted on the snow? }}{\lbrack Take }g=10m/s^2\rbrack}{ 2000 }Pa} 1600 Pa } 4000 Pa
Answer» { Q }2/15 A boy of mass }62kg is standing on skies kept }}{ on snow. Mass of each ski is }1kg and its base area is }}{800cm^2. What pressure will be exerted on the snow? }}{\lbrack Take }g=10m/s^2\rbrack}{ 2000 }Pa} 1600 Pa } 4000 Pa

Discussion

3847.	1.It is not possible to have a situation in which speed of particle is never zero but the average speed in an interval is zero. 2. It is not possible to have a situation in which the speed of particle is always zero but the average speed is not zero.Explain the above statements.
Answer» 1.It is not possible to have a situation in which speed of particle is never zero but the average speed in an interval is zero. 2. It is not possible to have a situation in which the speed of particle is always zero but the average speed is not zero. Explain the above statements.

3847.

1.It is not possible to have a situation in which speed of particle is never zero but the average speed in an interval is zero. 2. It is not possible to have a situation in which the speed of particle is always zero but the average speed is not zero.Explain the above statements.

Answer»

1.It is not possible to have a situation in which speed of particle is never zero but the average speed in an interval is zero.

2. It is not possible to have a situation in which the speed of particle is always zero but the average speed is not zero.

Explain the above statements.

Discussion

3848.	Choose the correct option(s) When the temperature of air in an open region increases:
Answer» Choose the correct option(s) When the temperature of air in an open region increases:

Discussion

3849.	Question 14 Name two electric devices for each where (i) heating effect of current is used and (ii) magnetic effect of current is used.
Answer» Question 14 Name two electric devices for each where (i) heating effect of current is used and (ii) magnetic effect of current is used.

3849.

Question 14 Name two electric devices for each where (i) heating effect of current is used and (ii) magnetic effect of current is used.

Answer»

Question 14

Name two electric devices for each where (i) heating effect of current is used and (ii) magnetic effect of current is used.

Discussion

3850.	a small ball collides with a massive wall, head-on. if the initial speed of ball is 10m/s and coefficient of restiution is 0.2, then the final speed of bal will be
Answer» a small ball collides with a massive wall, head-on. if the initial speed of ball is 10m/s and coefficient of restiution is 0.2, then the final speed of bal will be

Discussion

Explore topic-wise InterviewSolutions in .

What is converging and diverging light from a convex and a concave mirror?

A driving mirror consists of a cylindrical mirror of radius of curvature 10 cm and the length over the curved surface is 10 cm. If the eye of the driver be assumed to be at a great distance from the mirror, then field of view in radian is 2.0 (3) 3.0 (2) 4.0 (4) 5.0

why the hydrogen and oxygen gas mixed to forms water and other gas not to forms water

Define the following terms:

A mono atomic ideal gas undergoes a process in which the ratio of P to V at any instant is constant and equal to 1.What is the molar heat capacity of the gas ?

What makes paper to tear properly if we fold it and then tear it along the folded line?

In which type of collision it is possible that a ball strikes against the floor and returns with double the velocity?

When sun rotation period is 27 day if all of a sudden sun become twice of it initial size What is change in time period

What are the roles of a Meteorologist? [2 MARKS]

The mode of heat transfer between the sun and earth is ____.

Question 1What kind of mirror - concave, convex or plain - would be best suited for use in a solar cooker? Why?

Identify the following device: Which of the following objects can it detect? Belt Mobile phone Handkerchief Coins

The image of an object is formed ______________.

An object 3 cm high is placed at a distance of 30 cm from a plane mirror. Where will the image form? What is the nature of the image? What are the characterstics of the image?

Why does a magnetic needle gets deflected when brought near a current carrying?

State two ways by which the strength of the magnetic field of an electromagnet can be increased?

61.Why a long wire and thin wire is more resistance while short and thick wire is less resistance

A body cools from 50 degree Celsius to 45 degree celsius in 5 minutes and 40 degree celsius in another 8 minutes the temperature of the surrounding is

34. Find the screening constant for gallium and hence the effective nuclear charge upon it.?

The total number of compressions and rarefactions produced per second in a sound wave is 1000. The frequency of the sound wave is .....

Question 24It is a hot summer day, Priyanshi and Ali are wearing cotton and nylon clothes respectively. Who do you think would be more comfortable and why?

Find the missing values: BaseHeightArea of triangle15 cm…87 cm2…31.4 mm1256 mm222 cm…170.5 cm2

Why and in which direction do land breezes blow?

Shown figure represents the symbol of :

Which temperature scale is used for scientific work?

An odometer read 250 km when Mahesh started his car journey from his house to his office. After he reached there in an hour, it was showing 271 km. Find the average speed of his car.

A bridge is made from 20 m long iron rods. At temperature 18°C, the distance between two rods is 0.4 cm. Up to what temperature will the bridge be in good shape?

A particle moves in a straight line and its positionx at time t is given by x² = 2+t. Its accelerationis given by

Deepak is sitting next to Ashima in a fast-moving car. Is Ashima at rest or in motion with respect to Deepak?

Expression and derivation of equivalent thermal conductivity K in parallel and series.

How many types of reflection are there?

In a regular polygon of n sides each corner is at a distance r from center. Identical charges q are placed at (n – 1) corners. The electric field at center is

Physics3. A laser used to weld detached retains emits lightwith a wavelength 652 nm in pulses that are of 20msduration. The average power during each pulse is0.6w. The energy in each pulse and in a singlephoton are0o16 T

25A Carnot's engine takes 300 cal of heat at 500and rejects 150 cal of heat to the sink. Thetemperature of sink is(1) 80 K(2) 120 K(3) 212 K(4) 250 K

State two phenomena from your surroundings which involve the transformation of heat energy.

Metal cap of an electric cell is__________.

An object is located at a height equal to radius of the earth.What will be it's weight (given mass=m)

1.Displacement of a particle is given by 'x=3sin pi t' .Find the displacement travelled by particle from t=1/4sec to t=3/4sec

___ is the quantity derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines.

The volume of a cuboidal soap is 150 c.c. The length is 10 cm and breadth is 5 cm. Find its height.

49 1mol of non ideal gas internal energy ΔU=40Latm change with state from (1.0atm ,3.0L,200K) (4.0atm,5.0L,250K)changed.This process the change of enthalpy in Latm 1)43 2)57 3)42 4)none of these

How should one measure the temperature of a liquid with a laboratory thermometer?

{ Q }2/15 A boy of mass }62kg is standing on skies kept }}{ on snow. Mass of each ski is }1kg and its base area is }}{800cm^2. What pressure will be exerted on the snow? }}{\lbrack Take }g=10m/s^2\rbrack}{ 2000 }Pa} 1600 Pa } 4000 Pa

1.It is not possible to have a situation in which speed of particle is never zero but the average speed in an interval is zero. 2. It is not possible to have a situation in which the speed of particle is always zero but the average speed is not zero.Explain the above statements.

Choose the correct option(s) When the temperature of air in an open region increases:

Question 14 Name two electric devices for each where (i) heating effect of current is used and (ii) magnetic effect of current is used.

a small ball collides with a massive wall, head-on. if the initial speed of ball is 10m/s and coefficient of restiution is 0.2, then the final speed of bal will be