16569 + Interview Questions in Physics

1.	For the below figure, the effective potential difference when the batteries are connected in series is .
Answer» For the below figure, the effective potential difference when the batteries are connected in series is .

Discussion

2.	In Kelvin scale, 0 is taken as which particular value of the Celcius scale?
Answer» In Kelvin scale, 0 is taken as which particular value of the Celcius scale?

Discussion

3.	An object is propelled vertically to a maximum height of 4R from the surface of a planet of radius R and mass M. The speed of object when it returns to the surface of the planet is
Answer» An object is propelled vertically to a maximum height of 4R from the surface of a planet of radius R and mass M. The speed of object when it returns to the surface of the planet is

3.

An object is propelled vertically to a maximum height of 4R from the surface of a planet of radius R and mass M. The speed of object when it returns to the surface of the planet is

Answer»

An object is propelled vertically to a maximum height of 4R from the surface of a planet of radius R and mass M. The speed of object when it returns to the surface of the planet is

Discussion

4.	In a thermodynamic process helium gas obeys the law TP−25=constant. If temperature of 2 moles of the gas is raised from T to 3T, then
Answer» In a thermodynamic process helium gas obeys the law ${TP}^{\frac{- 2}{5}} = constant$ . If temperature of 2 moles of the gas is raised from T to 3T, then

Discussion

5.	Which is the only source of energy that is outside our planet? __
Answer» Which is the only source of energy that is outside our planet? __

Discussion

6.	A uranium nucleus at rest decays into a thorium nucleus and a helium nucleus, as shown below. Which of the following is true? 23592U→23190Th+42He
Answer» A uranium nucleus at rest decays into a thorium nucleus and a helium nucleus, as shown below. Which of the following is true? $_{92}^{235} U \to_{90}^{231} T h +_{2}^{4} H e$

6.

A uranium nucleus at rest decays into a thorium nucleus and a helium nucleus, as shown below. Which of the following is true? 23592U→23190Th+42He

Answer»

A uranium nucleus at rest decays into a thorium nucleus and a helium nucleus, as shown below. Which of the following is true?

$_{92}^{235} U \to_{90}^{231} T h +_{2}^{4} H e$

Discussion

7.	A racecar, moving at a constant speed of 60 m/s in a circular track of radius 100 m. Then, the centripetal acceleration is given by ___ m/s2.
Answer» A racecar, moving at a constant speed of $60 m / s$ in a circular track of radius $100 m$ . Then, the centripetal acceleration is given by ___ $m / s^{2}$ .

Discussion

8.	How is it possible to detect the filling of a bottle under a water tap by hearing the sound at a distance ?
Answer» How is it possible to detect the filling of a bottle under a water tap by hearing the sound at a distance ?

Discussion

9.	To keep an object in a fixed circular orbit, which of the following plays an important role?
Answer» To keep an object in a fixed circular orbit, which of the following plays an important role?

Discussion

10.	A student has difficulty reading the black board while sitting in the last row.what is the defect of vision? How can it be corrected?
Answer» A student has difficulty reading the black board while sitting in the last row.what is the defect of vision? How can it be corrected?

Discussion

11.	Pick out the one from the option which is responsible for changing the direction of the force.
Answer» Pick out the one from the option which is responsible for changing the direction of the force.

Discussion

12.	The quality of fuel depends on its___value.
Answer» The quality of fuel depends on its___value.

Discussion

13.	The lower block of a 'block and tackle' pulley system must be of negligible weight. Give reason.
Answer» The lower block of a 'block and tackle' pulley system must be of negligible weight. Give reason.

Discussion

14.	As light rays travel from air into a glass prism, they deviate
Answer» As light rays travel from air into a glass prism, they deviate

Discussion

15.	Image of an object is formed on
Answer» Image of an object is formed on

Discussion

16.	Uranium has two isotopes of masses 235 and 238 units . If both are present in uranium hexafluoride gas which would have the larger average speed ? If atomic mass of fluorine is 19 units , estimate the percentage difference in speeds at any temperature
Answer» Uranium has two isotopes of masses 235 and 238 units . If both are present in uranium hexafluoride gas which would have the larger average speed ? If atomic mass of fluorine is 19 units , estimate the percentage difference in speeds at any temperature

Discussion

17.	The refractive index of ice is 1.31 and that of rock salt is 1.54. Calculate the refractive index of rock salt with respect to the refractive index of ice.
Answer» The refractive index of ice is 1.31 and that of rock salt is 1.54. Calculate the refractive index of rock salt with respect to the refractive index of ice.

Discussion

18.	Q64)Multi Application Solar Telescope (MAST), a telescope for the detailed study of the solar activity including its magnetic field, was operationalised at the Udaipur Solar Observatory (USO) of Physical Research Laboratory (PRL).Consider the following statements: 1) MAST was built by Mechanical and Optical Systems (AMOS) of Germany and was tested by USO for onsite acceptance 2) It will be used to measure vector magnetic fields of active regions at different heights of the solar atmosphere 3) It will also be used to study seismic effect of solar flares. Which of the statement(s) given above is/are correct?
Answer» Q64)Multi Application Solar Telescope (MAST), a telescope for the detailed study of the solar activity including its magnetic field, was operationalised at the Udaipur Solar Observatory (USO) of Physical Research Laboratory (PRL).Consider the following statements: 1) MAST was built by Mechanical and Optical Systems (AMOS) of Germany and was tested by USO for onsite acceptance 2) It will be used to measure vector magnetic fields of active regions at different heights of the solar atmosphere 3) It will also be used to study seismic effect of solar flares. Which of the statement(s) given above is/are correct?

18.

Q64)Multi Application Solar Telescope (MAST), a telescope for the detailed study of the solar activity including its magnetic field, was operationalised at the Udaipur Solar Observatory (USO) of Physical Research Laboratory (PRL).Consider the following statements: 1) MAST was built by Mechanical and Optical Systems (AMOS) of Germany and was tested by USO for onsite acceptance 2) It will be used to measure vector magnetic fields of active regions at different heights of the solar atmosphere 3) It will also be used to study seismic effect of solar flares. Which of the statement(s) given above is/are correct?

Answer»

Q64)Multi Application Solar Telescope (MAST), a telescope for the detailed study of the solar activity including its magnetic field, was operationalised at the Udaipur Solar Observatory (USO) of Physical Research Laboratory (PRL).Consider the following statements:

1) MAST was built by Mechanical and Optical Systems (AMOS) of Germany and was tested by USO for onsite acceptance

2) It will be used to measure vector magnetic fields of active regions at different heights of the solar atmosphere

3) It will also be used to study seismic effect of solar flares.

Which of the statement(s) given above is/are correct?

Discussion

19.	Acceleration due to gravity 'g' in terms of mean density of the Earth 'd' and radius 'R' is: (G is universal gravitational constant)
Answer» Acceleration due to gravity 'g' in terms of mean density of the Earth 'd' and radius 'R' is: (G is universal gravitational constant)

19.

Acceleration due to gravity 'g' in terms of mean density of the Earth 'd' and radius 'R' is: (G is universal gravitational constant)

Answer»

Acceleration due to gravity 'g' in terms of mean density of the Earth 'd' and radius 'R' is:

(G is universal gravitational constant)

Discussion

20.	A student was asked by his teacher to find the image distance for various object distance in case of a given convex lens. He performed the experiment with all precautions and noted down his observations in the following table: S.NoOjbect distance(cm)Image distance(cm)160152481633621424245183661648 After checking the observations table the teacher pointed out that there is a mistake in recording the image distance in one of the observations. Find the serial number of the observations having faulty image distance.
Answer» A student was asked by his teacher to find the image distance for various object distance in case of a given convex lens. He performed the experiment with all precautions and noted down his observations in the following table: $\begin{matrix} S . N o & O j b e c t d i s t a n c e (c m) & I m a g e d i s t a n c e (c m) 1 & 60 & 15 2 & 48 & 16 3 & 36 & 21 4 & 24 & 24 5 & 18 & 36 6 & 16 & 48 \end{matrix}$ After checking the observations table the teacher pointed out that there is a mistake in recording the image distance in one of the observations. Find the serial number of the observations having faulty image distance.

Discussion

21.	A child can balance himself on a moving cycle than on a stationary cycle. Based on
Answer» A child can balance himself on a moving cycle than on a stationary cycle. Based on

Discussion

22.	Which of the following are concave mirrors and which convex mirrors ? Shaving mirrors, Car headlight mirror, Searchlight mirror, Driving mirror, Dentist's inspection mirror, Torch mirror, Staircase mirror in a double-decker bus, Make-up mirror, Solar furnace mirror, Satellite TV dish, Shop security mirror.
Answer» Which of the following are concave mirrors and which convex mirrors ? Shaving mirrors, Car headlight mirror, Searchlight mirror, Driving mirror, Dentist's inspection mirror, Torch mirror, Staircase mirror in a double-decker bus, Make-up mirror, Solar furnace mirror, Satellite TV dish, Shop security mirror.

Discussion

23.	What is presbyopia?
Answer» What is presbyopia?

Discussion

24.	Complete the following sentences : (a) A short-sighted person cannot see .............. objects clearly. Short-sightedness can be corrected by using ............... lenses. (b) A long-sighted person cannot see ............... objects clearly. Long-sightedness can be corrected by using .............. lenses.
Answer» Complete the following sentences : (a) A short-sighted person cannot see .............. objects clearly. Short-sightedness can be corrected by using ............... lenses. (b) A long-sighted person cannot see ............... objects clearly. Long-sightedness can be corrected by using .............. lenses.

Discussion

25.	While passing a ray through a convex lens( while constructing the figure), do we show the ray of light bend as it enters from air to lens or directly make it as the lensis not there?
Answer» While passing a ray through a convex lens( while constructing the figure), do we show the ray of light bend as it enters from air to lens or directly make it as the lensis not there?

Discussion

26.	Why is the fuse wire fitted in a porcelain casing?
Answer» Why is the fuse wire fitted in a porcelain casing?

26.

Why is the fuse wire fitted in a porcelain casing?

Answer»

Why is the fuse wire fitted in a porcelain casing?

Discussion

27.	An electric ___ is a safety device, used to protect electrical appliances connected to the circuit.
Answer» An electric ___ is a safety device, used to protect electrical appliances connected to the circuit.

Discussion

28.	Q79) Geosynchronous Satellite Launch Vehicle (GSLV)-D6 was successfully launched from the Second Launch Pad at the Satish Dhawan Space Centre SHAR (SDSC SHAR), Sriharikota in Andhra Pradesh. Consider the following statements related to it. 1) GSLV-D6 inducted 2117 kg GSAT-6, an advanced communication satellite into a Geosynchronous Transfer Orbit (GTO). 2) The satellite is intended to provide V-band communication services in the country 3) This is the third time the indigenously developed Cryogenic Upper Stage (CUS) is being carried on-board during a GSLV flight 4) A Cryogenic rocket stage is less efficient as it provides less thrust for every kilogram of propellant it burns compared to solid and earth-storable liquid propellant rocket stages 5) The GSAT or Geosynchronous satellite is a constellation of communication satellites developed by the Indian Space Research Organisation (ISRO) with an objective to make India self-reliant in broadcasting services. Which of the statements given above are correct?
Answer» Q79) Geosynchronous Satellite Launch Vehicle (GSLV)-D6 was successfully launched from the Second Launch Pad at the Satish Dhawan Space Centre SHAR (SDSC SHAR), Sriharikota in Andhra Pradesh. Consider the following statements related to it. 1) GSLV-D6 inducted 2117 kg GSAT-6, an advanced communication satellite into a Geosynchronous Transfer Orbit (GTO). 2) The satellite is intended to provide V-band communication services in the country 3) This is the third time the indigenously developed Cryogenic Upper Stage (CUS) is being carried on-board during a GSLV flight 4) A Cryogenic rocket stage is less efficient as it provides less thrust for every kilogram of propellant it burns compared to solid and earth-storable liquid propellant rocket stages 5) The GSAT or Geosynchronous satellite is a constellation of communication satellites developed by the Indian Space Research Organisation (ISRO) with an objective to make India self-reliant in broadcasting services. Which of the statements given above are correct?

28.

Q79) Geosynchronous Satellite Launch Vehicle (GSLV)-D6 was successfully launched from the Second Launch Pad at the Satish Dhawan Space Centre SHAR (SDSC SHAR), Sriharikota in Andhra Pradesh. Consider the following statements related to it. 1) GSLV-D6 inducted 2117 kg GSAT-6, an advanced communication satellite into a Geosynchronous Transfer Orbit (GTO). 2) The satellite is intended to provide V-band communication services in the country 3) This is the third time the indigenously developed Cryogenic Upper Stage (CUS) is being carried on-board during a GSLV flight 4) A Cryogenic rocket stage is less efficient as it provides less thrust for every kilogram of propellant it burns compared to solid and earth-storable liquid propellant rocket stages 5) The GSAT or Geosynchronous satellite is a constellation of communication satellites developed by the Indian Space Research Organisation (ISRO) with an objective to make India self-reliant in broadcasting services. Which of the statements given above are correct?

Answer»

Q79) Geosynchronous Satellite Launch Vehicle (GSLV)-D6 was successfully launched from the Second Launch Pad at the Satish Dhawan Space Centre SHAR (SDSC SHAR), Sriharikota in Andhra Pradesh. Consider the following statements related to it.

1) GSLV-D6 inducted 2117 kg GSAT-6, an advanced communication satellite into a Geosynchronous Transfer Orbit (GTO).

2) The satellite is intended to provide V-band communication services in the country

3) This is the third time the indigenously developed Cryogenic Upper Stage (CUS) is being carried on-board during a GSLV flight

4) A Cryogenic rocket stage is less efficient as it provides less thrust for every kilogram of propellant it burns compared to solid and earth-storable liquid propellant rocket stages

5) The GSAT or Geosynchronous satellite is a constellation of communication satellites developed by the Indian Space Research Organisation (ISRO) with an objective to make India self-reliant in broadcasting services.

Which of the statements given above are correct?

Discussion

29.	Why does a magnetic power come from a string always come to rest in north south direction
Answer» Why does a magnetic power come from a string always come to rest in north south direction

Discussion

30.	An illuminated object is placed at a distance of 20 cm from a converging lens of focal length 15 cm. The image obtained on the screen is : (a) upright and magnified (b) inverted and magnified (c) inverted and diminished (d) upright and diminished
Answer» An illuminated object is placed at a distance of 20 cm from a converging lens of focal length 15 cm. The image obtained on the screen is : (a) upright and magnified (b) inverted and magnified (c) inverted and diminished (d) upright and diminished

Discussion

31.	Six resistances are connected together as shown in the figure. The equivalent resistance between the points A and B.
Answer» Six resistances are connected together as shown in the figure. The equivalent resistance between the points A and B.

31.

Six resistances are connected together as shown in the figure. The equivalent resistance between the points A and B.

Answer»

Six resistances are connected together as shown in the figure. The equivalent resistance between the points A and B.

Discussion

32.	The distance at which an object should be placed from a thin convex lens of focal length 10 cm to obtain a virtual image of double of its size is
Answer» The distance at which an object should be placed from a thin convex lens of focal length 10 cm to obtain a virtual image of double of its size is

Discussion

33.	A body moves in a vertical circle of radius r from the lowest point to highest point. What is the amount of work done by gravitational force during the motion? (Assume mass of the body to be 'm' kg and acceleration due to gravity to be 'g' ms2)
Answer» A body moves in a vertical circle of radius r from the lowest point to highest point. What is the amount of work done by gravitational force during the motion? (Assume mass of the body to be 'm' kg and acceleration due to gravity to be 'g' $\frac{m}{s^{2}}$ )

33.

A body moves in a vertical circle of radius r from the lowest point to highest point. What is the amount of work done by gravitational force during the motion? (Assume mass of the body to be 'm' kg and acceleration due to gravity to be 'g' ms2)

Answer»

A body moves in a vertical circle of radius r from the lowest point to highest point. What is the amount of work done by gravitational force during the motion? (Assume mass of the body to be 'm' kg and acceleration due to gravity to be 'g' $\frac{m}{s^{2}}$ )

Discussion

34.	Suppose two bodies of mass 2kg and 10kg are placed on a frictionless surface. The force required to move either of them is the same . Does that mean both bodies have same inertia ? Give reasons for your choice .
Answer» Suppose two bodies of mass 2kg and 10kg are placed on a frictionless surface. The force required to move either of them is the same . Does that mean both bodies have same inertia ? Give reasons for your choice .

Discussion

35.	What is potential difference
Answer» What is potential difference

Discussion

36.	Which of the following is mainly used as rocket fuel?
Answer» Which of the following is mainly used as rocket fuel?

Discussion

37.	What is watt
Answer» What is watt

Discussion

38.	Can the radii of the two spheres which form the lens be different?
Answer» Can the radii of the two spheres which form the lens be different?

Discussion

39.	Pleeeeease tell me........ Why we use two slip rings in a generator..... why not only one
Answer» Pleeeeease tell me........ Why we use two slip rings in a generator..... why not only one

39.

Pleeeeease tell me........ Why we use two slip rings in a generator..... why not only one

Answer»

Pleeeeease tell me........

Why we use two slip rings in a generator..... why not only one

Discussion

40.	Prove that Moment of couple = Force × couple arm.
Answer» Prove that Moment of couple = Force $\times$ couple arm.

Discussion

41.	Choose the correct ray diagram:
Answer» Choose the correct ray diagram:

Discussion

42.	What is permeability of free space? Why we are multiplying it?is it a constant?
Answer» What is permeability of free space? Why we are multiplying it?is it a constant?

Discussion

43.	(a) What is a solar cell ? Draw the labelled diagram of a solar cell. (b) Name the semi-conductor material which is usually used for making solar cells. (c) Write the uses of solar cells.
Answer» (a) What is a solar cell ? Draw the labelled diagram of a solar cell. (b) Name the semi-conductor material which is usually used for making solar cells. (c) Write the uses of solar cells.

Discussion

44.	Three bulbs with resistances R, 2R and 3R are connected in parallel to a battery. Then
Answer» Three bulbs with resistances R, 2R and 3R are connected in parallel to a battery. Then

Discussion

45.	Which of the following is not an example of a biomass energy source? (a) wood (b) biogas (c) atomic energy (d) cow-dung
Answer» Which of the following is not an example of a biomass energy source? (a) wood (b) biogas (c) atomic energy (d) cow-dung

Discussion

46.	Two circular coils mounted parallel to each other on the same axis carry steady currents. If an observer between the coils report that one coil is carrying a clockwise current I1 , while the other is carrying a counter clockwise current I2, between the two coils, then there is :
Answer» Two circular coils mounted parallel to each other on the same axis carry steady currents. If an observer between the coils report that one coil is carrying a clockwise current I1 , while the other is carrying a counter clockwise current I2, between the two coils, then there is :

Discussion

47.	An object of height 7 cm is kept at a distance of 25 CM in front of a concave mirror . The focal length of the mirror is 15 cm. At what distance from the mirror should a screen be kept so as to get a clear image? What will be the size and nature of image
Answer» An object of height 7 cm is kept at a distance of 25 CM in front of a concave mirror . The focal length of the mirror is 15 cm. At what distance from the mirror should a screen be kept so as to get a clear image? What will be the size and nature of image

Discussion

48.	Dynamo is a device for converting
Answer» Dynamo is a device for converting

Discussion

49.	If the object is placed at 60 cm from the concave mirror. The object moves with velocity 20 cmsec towards the mirror. The magnification is −12 at initial position. And if magnification after 1 sec is – 1. Find out the average velocity of the image for above 1 sec period.
Answer» If the object is placed at 60 cm from the concave mirror. The object moves with velocity 20 $\frac{c m}{s e c}$ towards the mirror. The magnification is $\frac{- 1}{2}$ at initial position. And if magnification after 1 sec is – 1. Find out the average velocity of the image for above 1 sec period.

Discussion

50.	Match the industries with the raw materials for which they are dependent on the forests. 1. Beef industry i) Latex of trees 2. Furniture industry ii) Grazing ground 3. Ayurvedic medicine industry iii) Herbs 4. Rubber industry iv) Wood
Answer» Match the industries with the raw materials for which they are dependent on the forests. 1. Beef industry i) Latex of trees 2. Furniture industry ii) Grazing ground 3. Ayurvedic medicine industry iii) Herbs 4. Rubber industry iv) Wood

50.

Match the industries with the raw materials for which they are dependent on the forests. 1. Beef industry i) Latex of trees 2. Furniture industry ii) Grazing ground 3. Ayurvedic medicine industry iii) Herbs 4. Rubber industry iv) Wood

Answer»

Match the industries with the raw materials for which they are dependent on the forests.

1. Beef industry i) Latex of trees

2. Furniture industry ii) Grazing ground

3. Ayurvedic medicine industry iii) Herbs

4. Rubber industry iv) Wood

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

For the below figure, the effective potential difference when the batteries are connected in series is .

In Kelvin scale, 0 is taken as which particular value of the Celcius scale?

An object is propelled vertically to a maximum height of 4R from the surface of a planet of radius R and mass M. The speed of object when it returns to the surface of the planet is

In a thermodynamic process helium gas obeys the law TP−25=constant. If temperature of 2 moles of the gas is raised from T to 3T, then

Which is the only source of energy that is outside our planet? __

A uranium nucleus at rest decays into a thorium nucleus and a helium nucleus, as shown below. Which of the following is true? 23592U→23190Th+42He

A racecar, moving at a constant speed of 60 m/s in a circular track of radius 100 m. Then, the centripetal acceleration is given by ___ m/s2.

How is it possible to detect the filling of a bottle under a water tap by hearing the sound at a distance ?

To keep an object in a fixed circular orbit, which of the following plays an important role?

A student has difficulty reading the black board while sitting in the last row.what is the defect of vision? How can it be corrected?

Pick out the one from the option which is responsible for changing the direction of the force.

The quality of fuel depends on its___value.

The lower block of a 'block and tackle' pulley system must be of negligible weight. Give reason.

As light rays travel from air into a glass prism, they deviate

Image of an object is formed on

Uranium has two isotopes of masses 235 and 238 units . If both are present in uranium hexafluoride gas which would have the larger average speed ? If atomic mass of fluorine is 19 units , estimate the percentage difference in speeds at any temperature

The refractive index of ice is 1.31 and that of rock salt is 1.54. Calculate the refractive index of rock salt with respect to the refractive index of ice.

Acceleration due to gravity 'g' in terms of mean density of the Earth 'd' and radius 'R' is: (G is universal gravitational constant)

A child can balance himself on a moving cycle than on a stationary cycle. Based on

What is presbyopia?

While passing a ray through a convex lens( while constructing the figure), do we show the ray of light bend as it enters from air to lens or directly make it as the lensis not there?

Why is the fuse wire fitted in a porcelain casing?

An electric ___ is a safety device, used to protect electrical appliances connected to the circuit.

Why does a magnetic power come from a string always come to rest in north south direction

An illuminated object is placed at a distance of 20 cm from a converging lens of focal length 15 cm. The image obtained on the screen is : (a) upright and magnified (b) inverted and magnified (c) inverted and diminished (d) upright and diminished

Six resistances are connected together as shown in the figure. The equivalent resistance between the points A and B.

The distance at which an object should be placed from a thin convex lens of focal length 10 cm to obtain a virtual image of double of its size is

A body moves in a vertical circle of radius r from the lowest point to highest point. What is the amount of work done by gravitational force during the motion? (Assume mass of the body to be 'm' kg and acceleration due to gravity to be 'g' ms2)

Suppose two bodies of mass 2kg and 10kg are placed on a frictionless surface. The force required to move either of them is the same . Does that mean both bodies have same inertia ? Give reasons for your choice .

What is potential difference

Which of the following is mainly used as rocket fuel?

What is watt

Can the radii of the two spheres which form the lens be different?

Pleeeeease tell me........ Why we use two slip rings in a generator..... why not only one

Prove that Moment of couple = Force × couple arm.

Choose the correct ray diagram:

What is permeability of free space? Why we are multiplying it?is it a constant?

(a) What is a solar cell ? Draw the labelled diagram of a solar cell. (b) Name the semi-conductor material which is usually used for making solar cells. (c) Write the uses of solar cells.

Three bulbs with resistances R, 2R and 3R are connected in parallel to a battery. Then

Which of the following is not an example of a biomass energy source? (a) wood (b) biogas (c) atomic energy (d) cow-dung

Two circular coils mounted parallel to each other on the same axis carry steady currents. If an observer between the coils report that one coil is carrying a clockwise current I1 , while the other is carrying a counter clockwise current I2, between the two coils, then there is :

An object of height 7 cm is kept at a distance of 25 CM in front of a concave mirror . The focal length of the mirror is 15 cm. At what distance from the mirror should a screen be kept so as to get a clear image? What will be the size and nature of image

Dynamo is a device for converting

If the object is placed at 60 cm from the concave mirror. The object moves with velocity 20 cmsec towards the mirror. The magnification is −12 at initial position. And if magnification after 1 sec is – 1. Find out the average velocity of the image for above 1 sec period.

Match the industries with the raw materials for which they are dependent on the forests. 1. Beef industry i) Latex of trees 2. Furniture industry ii) Grazing ground 3. Ayurvedic medicine industry iii) Herbs 4. Rubber industry iv) Wood