16569 + Interview Questions in Physics

1.	Question 15 Select the incorrect statement. (a) Economic development is linked to environmental conservation (b) Sustainable development encourages development for current generation and conservation of resources for future generations (c) Sustainable development does not consider the view points of stakeholders (d) Sustainable development is a long planned and persistent development.
Answer» Question 15 Select the incorrect statement. (a) Economic development is linked to environmental conservation (b) Sustainable development encourages development for current generation and conservation of resources for future generations (c) Sustainable development does not consider the view points of stakeholders (d) Sustainable development is a long planned and persistent development.

Discussion

2.	Statement 1: Current has a direction and magnitude so it is a vector. Statement 2: All vectors obey the parallelogram law of vector addition
Answer» Statement 1: Current has a direction and magnitude so it is a vector. Statement 2: All vectors obey the parallelogram law of vector addition

Discussion

3.	As nucleus is positively charged and electron is negatively charged in an atom , both of them having opposite charges then why they did not attract each other.
Answer» As nucleus is positively charged and electron is negatively charged in an atom , both of them having opposite charges then why they did not attract each other.

Discussion

4.	Two points have potentials of 10V and 5V respectively. The magnitude of the potential difference between the points is ___V.
Answer» Two points have potentials of 10V and 5V respectively. The magnitude of the potential difference between the points is ___V.

Discussion

5.	Statement I: lesser the power of the lens, lesser is the convergence (or) divergence of light. Statement II: lesser the power, more is the focal length.
Answer» Statement I: lesser the power of the lens, lesser is the convergence (or) divergence of light. Statement II: lesser the power, more is the focal length.

5.

Statement I: lesser the power of the lens, lesser is the convergence (or) divergence of light. Statement II: lesser the power, more is the focal length.

Answer»

Statement I: lesser the power of the lens, lesser is the convergence (or) divergence of light.

Statement II: lesser the power, more is the focal length.

Discussion

6.	Name and define the characteristic which enables one to distinguish two sounds of same loudness, but of different frequencies, given by the same instrument.
Answer» Name and define the characteristic which enables one to distinguish two sounds of same loudness, but of different frequencies, given by the same instrument.

Discussion

7.	Name five appliances or machines which use an electric motor.
Answer» Name five appliances or machines which use an electric motor.

Discussion

8.	If 2 bar magnets made of iron that look alike are given to us then how will we check which one is the original magnet ?
Answer» If 2 bar magnets made of iron that look alike are given to us then how will we check which one is the original magnet ?

Discussion

9.	What is the transformer ratio of a step-down transformer?
Answer» What is the transformer ratio of a step-down transformer?

Discussion

10.	A current-carrying conductor is held in exactly in a vertical direction. In order to produce a clockwise magnetic field around the conductor, the current should be passed in the conductor : (a) from top towards bottom (b) from left towards right (c) from bottom towards top (d) from right towards left
Answer» A current-carrying conductor is held in exactly in a vertical direction. In order to produce a clockwise magnetic field around the conductor, the current should be passed in the conductor : (a) from top towards bottom (b) from left towards right (c) from bottom towards top (d) from right towards left

10.

A current-carrying conductor is held in exactly in a vertical direction. In order to produce a clockwise magnetic field around the conductor, the current should be passed in the conductor : (a) from top towards bottom (b) from left towards right (c) from bottom towards top (d) from right towards left

Answer»

A current-carrying conductor is held in exactly in a vertical direction. In order to produce a clockwise magnetic field around the conductor, the current should be passed in the conductor :

(a) from top towards bottom (b) from left towards right

(c) from bottom towards top (d) from right towards left

Discussion

11.	A concave mirror produce 3 times anlarge (real) image of an object placed at 10 cm . In front of it . Calculate R?
Answer» A concave mirror produce 3 times anlarge (real) image of an object placed at 10 cm . In front of it . Calculate R?

Discussion

12.	What is meant by dispersion of white light ? Describe the formation of rainbow in the sky with the help of a diagram.
Answer» What is meant by dispersion of white light ? Describe the formation of rainbow in the sky with the help of a diagram.

Discussion

13.	Which was the first Indian city that passed a smoke nuisance legislation?
Answer» Which was the first Indian city that passed a smoke nuisance legislation?

Discussion

14.	What is the principle of motor and generator?
Answer» What is the principle of motor and generator?

Discussion

15.	Describe and explain, how a normal eye can see objects lying at various distances clearly.
Answer» Describe and explain, how a normal eye can see objects lying at various distances clearly.

Discussion

16.	This Question is about Gravitation :- According to the Newton's law of gravitation Earth's gravitational force is higher on an object of larger mass .why doesn't that object fall down with higher velocity as compared to an object will lower mass?
Answer» This Question is about Gravitation :- According to the Newton's law of gravitation Earth's gravitational force is higher on an object of larger mass .why doesn't that object fall down with higher velocity as compared to an object will lower mass?

16.

This Question is about Gravitation :- According to the Newton's law of gravitation Earth's gravitational force is higher on an object of larger mass .why doesn't that object fall down with higher velocity as compared to an object will lower mass?

Answer»

This Question is about Gravitation :-

According to the Newton's law of gravitation Earth's gravitational force is higher on an object of larger mass .why doesn't that object fall down with higher velocity as compared to an object will lower mass?

Discussion

17.	How electricity and magnetism is interconnected with each other???
Answer» How electricity and magnetism is interconnected with each other???

Discussion

18.	Why do we need 2 eyes to watch .
Answer» Why do we need 2 eyes to watch .

Discussion

19.	A virtual, erect and magnified image of an object is to be obtained with a convex lens. For this purpose, the object should be placed : (a) between 2F and infinity (b) between F and optical centre (c) between F and 2F (d) at F
Answer» A virtual, erect and magnified image of an object is to be obtained with a convex lens. For this purpose, the object should be placed : (a) between 2F and infinity (b) between F and optical centre (c) between F and 2F (d) at F

Discussion

20.	Choose the correct ray diagram for the given incident ray.
Answer» Choose the correct ray diagram for the given incident ray.

Discussion

21.	Convex mirror is also known as _______.
Answer» Convex mirror is also known as _______.

Discussion

22.	Hydroelectric power plants are generally located in:
Answer» Hydroelectric power plants are generally located in:

Discussion

23.	The material used for making the armature of an electric bell or a temporary electromagnet is
Answer» The material used for making the armature of an electric bell or a temporary electromagnet is

Discussion

24.	Two plane mirrors kept at an angle 90∘, as shown in the figure. It is obvious that M1 will form an image of point object O, and M2 will form an image of it. But in a practical scenario, a third image is also seen. Answer the following questions based on this situation : The third image formed is :
Answer» Two plane mirrors kept at an angle $90^{\circ}$ , as shown in the figure. It is obvious that $M_{1}$ will form an image of point object O, and $M_{2}$ will form an image of it. But in a practical scenario, a third image is also seen. Answer the following questions based on this situation : The third image formed is :

Discussion

25.	How will you decide whether a body is in uniform acceleration or non-uniform acceleration?
Answer» How will you decide whether a body is in uniform acceleration or non-uniform acceleration?

Discussion

26.	In a full wave rectifier circuit operating from 50 Hz mains frequency, the fundamental frequency in the ripple would be
Answer» In a full wave rectifier circuit operating from 50 Hz mains frequency, the fundamental frequency in the ripple would be

Discussion

27.	The process by which energy is released in sun is
Answer» The process by which energy is released in sun is

Discussion

28.	The power of a converging lens is 4.5 D and that of a diverging lens is 3 D. The power of the combination of these lenses is:
Answer» The power of a converging lens is $4.5 D$ and that of a diverging lens is $3 D$ . The power of the combination of these lenses is:

Discussion

29.	The unit of temperature is ________
Answer» The unit of temperature is ________

Discussion

30.	Which of the following, if true, would most weaken the conclusion concerning the purpose of bats’ noseleaves?
Answer» Which of the following, if true, would most weaken the conclusion concerning the purpose of bats’ noseleaves?

Discussion

31.	A satellite becomes unstable in its orbit and begins to fall towards earth and simultaneously starts burning. If the satellite had a potential energy of 10000 J initially and by the time it reaches the surface of the earth it attains a kinetic energy of 5000 J, then how much energy was lost as a result of its burning?
Answer» A satellite becomes unstable in its orbit and begins to fall towards earth and simultaneously starts burning. If the satellite had a potential energy of 10000 J initially and by the time it reaches the surface of the earth it attains a kinetic energy of 5000 J, then how much energy was lost as a result of its burning?

Discussion

32.	An object of height 5cm is placed at a distance of 10cm from a convex mirror of radius of curvature 30cm.Find the nature and position and size of the image?
Answer» An object of height 5cm is placed at a distance of 10cm from a convex mirror of radius of curvature 30cm.Find the nature and position and size of the image?

Discussion

33.	Question 5 A person needs a lens of power -5.5 dioptres for correcting his distant vision. For correcting his near vision he needs a lens of power +1.5 dioptre. What is the focal length of the lens required for correcting (i) distant vision, and (ii) near vision?
Answer» Question 5 A person needs a lens of power -5.5 dioptres for correcting his distant vision. For correcting his near vision he needs a lens of power +1.5 dioptre. What is the focal length of the lens required for correcting (i) distant vision, and (ii) near vision?

Discussion

34.	The resistance of pure platinum increases linearly with temperature (over a small range). We can use this property to measure temperature of different bodies, relative to a scale. If we scale the thermometer such that a resistance of 80 Ω denotes 0oC and 90 Ω denotes 100oC, what temperature will a resistance of 86 Ω denote?
Answer» The resistance of pure platinum increases linearly with temperature (over a small range). We can use this property to measure temperature of different bodies, relative to a scale. If we scale the thermometer such that a resistance of 80 Ω denotes $0^{o} C$ and 90 Ω denotes $100^{o} C$ , what temperature will a resistance of 86 Ω denote?

34.

The resistance of pure platinum increases linearly with temperature (over a small range). We can use this property to measure temperature of different bodies, relative to a scale. If we scale the thermometer such that a resistance of 80 Ω denotes 0oC and 90 Ω denotes 100oC, what temperature will a resistance of 86 Ω denote?

Answer»

The resistance of pure platinum increases linearly with temperature (over a small range). We can use this property to measure temperature of different bodies, relative to a scale.

If we scale the thermometer such that a resistance of 80 Ω denotes $0^{o} C$ and 90 Ω denotes $100^{o} C$ , what temperature will a resistance of 86 Ω denote?

Discussion

35.	Air is
Answer» Air is

Discussion

36.	Question 28 (ii) B1, B2, and B3 are three identical bulbs connected as shown in figure. When all the three bulbs glow, a current of 3A is recorded by the ammeter A. (ii) What happens to the reading of A1, A2 A3 and A when the bulb B2 gets fused?
Answer» Question 28 (ii) $B_{1}, B_{2}, a n d B_{3}$ are three identical bulbs connected as shown in figure. When all the three bulbs glow, a current of 3A is recorded by the ammeter A. (ii) What happens to the reading of $A_{1}, A_{2} A_{3}$ and A when the bulb $B_{2}$ gets fused?

Discussion

37.	In which direction will the rope move if a. Girl's team is winning b. Both the teams apply an equal force? [2 MARKS]
Answer» In which direction will the rope move if a. Girl's team is winning b. Both the teams apply an equal force? [2 MARKS]

37.

In which direction will the rope move if a. Girl's team is winning b. Both the teams apply an equal force? [2 MARKS]

Answer»

In which direction will the rope move if
a. Girl's team is winning
b. Both the teams apply an equal force? [2 MARKS]

Discussion

38.	A Ray of light is incident in medium one on a surface that separates medium one from medium to let V1 and V2 represent the velocity of light in medium one and medium to respective also let n12 and n21 respect the refractive index of medium one with respect to medium 2 and refractive index of medium two with respect to medium 1 respectively. if i and r denote the angles of incidence and refraction then a)sin i/sin r=n12=v2/v1 b)sin i/sin r=n21=v2/v1 c)sin i/sin r=n12=v1/v2 d)sin i/sin r=n21=vi/v2
Answer» A Ray of light is incident in medium one on a surface that separates medium one from medium to let V1 and V2 represent the velocity of light in medium one and medium to respective also let n12 and n21 respect the refractive index of medium one with respect to medium 2 and refractive index of medium two with respect to medium 1 respectively. if i and r denote the angles of incidence and refraction then a)sin i/sin r=n12=v2/v1 b)sin i/sin r=n21=v2/v1 c)sin i/sin r=n12=v1/v2 d)sin i/sin r=n21=vi/v2

Discussion

39.	A car moving with a velocity of 10 m/s can be stopped by the application of a constant force F in a distance of 20 m. If the velocity of the car is 30 m/s, it can be stopped by this force in
Answer» A car moving with a velocity of $10 m/s$ can be stopped by the application of a constant force $F$ in a distance of $20 m$ . If the velocity of the car is $30 m/s$ , it can be stopped by this force in

Discussion

40.	Resistance of a conductor also increases linearly with the temperature. How? Also explain what is the linear increase in temperature. EXPLAIN in detail.
Answer» Resistance of a conductor also increases linearly with the temperature. How? Also explain what is the linear increase in temperature. EXPLAIN in detail.

40.

Resistance of a conductor also increases linearly with the temperature. How? Also explain what is the linear increase in temperature. EXPLAIN in detail.

Answer»

Resistance of a conductor also increases linearly with the temperature. How?

Also explain what is the linear increase in temperature.

EXPLAIN in detail.

Discussion

41.	A fish is swimming in a river at a depth of 20 cm from the surface of the water. Refractive Index of water is 43. At what depth will an eagle flying above the water and exactly above the fish will see the fish?
Answer» A fish is swimming in a river at a depth of 20 cm from the surface of the water. Refractive Index of water is $\frac{4}{3}$ . At what depth will an eagle flying above the water and exactly above the fish will see the fish?

Discussion

42.	The diagram below shows a lever in use. Which class of lever is it?
Answer» The diagram below shows a lever in use. Which class of lever is it?

42.

The diagram below shows a lever in use. Which class of lever is it?

Answer»

The diagram below shows a lever in use. Which class of lever is it?

Discussion

43.	The essential difference between an AC generator and a DC generator is that:
Answer» The essential difference between an AC generator and a DC generator is that:

Discussion

44.	The term "accommodation" as applied to the eye, referes to its ability to : (a) control the light intensity falling on the retina (b) erect the inverted image formed on the retina (c) vary the focal length of the lens (d) vary the distance between the lens and retina
Answer» The term "accommodation" as applied to the eye, referes to its ability to : (a) control the light intensity falling on the retina (b) erect the inverted image formed on the retina (c) vary the focal length of the lens (d) vary the distance between the lens and retina

Discussion

45.	The kind of respiration observed in microorganisms like yeasts, bacteria, fungi is ___ .
Answer» The kind of respiration observed in microorganisms like yeasts, bacteria, fungi is ___ .

Discussion

46.	Why are rainbows formed in the form of a circular arc?
Answer» Why are rainbows formed in the form of a circular arc?

Discussion

47.	In the given figure, where do the diverging rays seem to meet? (F1 ,F2 are the primary focus of the lens)
Answer» In the given figure, where do the diverging rays seem to meet? ( $F_{1}$ , $F_{2}$ are the primary focus of the lens)

Discussion

48.	Which metal is used in a solar panel?
Answer» Which metal is used in a solar panel?

Discussion

49.	Most of the sources of energy that we use represent stored solar energy. Which of the following is not ultimately derived from the sun's energy ? (a) wind energy (b) geothermal energy (c) fossil fuels (d) biomass
Answer» Most of the sources of energy that we use represent stored solar energy. Which of the following is not ultimately derived from the sun's energy ? (a) wind energy (b) geothermal energy (c) fossil fuels (d) biomass

Discussion

50.	The mass defect in a nucleus is because of?
Answer» The mass defect in a nucleus is because of?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Statement 1: Current has a direction and magnitude so it is a vector. Statement 2: All vectors obey the parallelogram law of vector addition

As nucleus is positively charged and electron is negatively charged in an atom , both of them having opposite charges then why they did not attract each other.

Two points have potentials of 10V and 5V respectively. The magnitude of the potential difference between the points is ___V.

Statement I: lesser the power of the lens, lesser is the convergence (or) divergence of light. Statement II: lesser the power, more is the focal length.

Name and define the characteristic which enables one to distinguish two sounds of same loudness, but of different frequencies, given by the same instrument.

Name five appliances or machines which use an electric motor.

If 2 bar magnets made of iron that look alike are given to us then how will we check which one is the original magnet ?

What is the transformer ratio of a step-down transformer?

A concave mirror produce 3 times anlarge (real) image of an object placed at 10 cm . In front of it . Calculate R?

What is meant by dispersion of white light ? Describe the formation of rainbow in the sky with the help of a diagram.

Which was the first Indian city that passed a smoke nuisance legislation?

What is the principle of motor and generator?

Describe and explain, how a normal eye can see objects lying at various distances clearly.

This Question is about Gravitation :- According to the Newton's law of gravitation Earth's gravitational force is higher on an object of larger mass .why doesn't that object fall down with higher velocity as compared to an object will lower mass?

How electricity and magnetism is interconnected with each other???

Why do we need 2 eyes to watch .

A virtual, erect and magnified image of an object is to be obtained with a convex lens. For this purpose, the object should be placed : (a) between 2F and infinity (b) between F and optical centre (c) between F and 2F (d) at F

Choose the correct ray diagram for the given incident ray.

Convex mirror is also known as _______.

Hydroelectric power plants are generally located in:

The material used for making the armature of an electric bell or a temporary electromagnet is

How will you decide whether a body is in uniform acceleration or non-uniform acceleration?

In a full wave rectifier circuit operating from 50 Hz mains frequency, the fundamental frequency in the ripple would be

The process by which energy is released in sun is

The power of a converging lens is 4.5 D and that of a diverging lens is 3 D. The power of the combination of these lenses is:

The unit of temperature is ________

Which of the following, if true, would most weaken the conclusion concerning the purpose of bats’ noseleaves?

An object of height 5cm is placed at a distance of 10cm from a convex mirror of radius of curvature 30cm.Find the nature and position and size of the image?

Question 5 A person needs a lens of power -5.5 dioptres for correcting his distant vision. For correcting his near vision he needs a lens of power +1.5 dioptre. What is the focal length of the lens required for correcting (i) distant vision, and (ii) near vision?

Air is

Question 28 (ii) B1, B2, and B3 are three identical bulbs connected as shown in figure. When all the three bulbs glow, a current of 3A is recorded by the ammeter A. (ii) What happens to the reading of A1, A2 A3 and A when the bulb B2 gets fused?

In which direction will the rope move if a. Girl's team is winning b. Both the teams apply an equal force? [2 MARKS]

A car moving with a velocity of 10 m/s can be stopped by the application of a constant force F in a distance of 20 m. If the velocity of the car is 30 m/s, it can be stopped by this force in

Resistance of a conductor also increases linearly with the temperature. How? Also explain what is the linear increase in temperature. EXPLAIN in detail.

A fish is swimming in a river at a depth of 20 cm from the surface of the water. Refractive Index of water is 43. At what depth will an eagle flying above the water and exactly above the fish will see the fish?

The diagram below shows a lever in use. Which class of lever is it?

The essential difference between an AC generator and a DC generator is that:

The term "accommodation" as applied to the eye, referes to its ability to : (a) control the light intensity falling on the retina (b) erect the inverted image formed on the retina (c) vary the focal length of the lens (d) vary the distance between the lens and retina

The kind of respiration observed in microorganisms like yeasts, bacteria, fungi is ___ .

Why are rainbows formed in the form of a circular arc?

In the given figure, where do the diverging rays seem to meet? (F1 ,F2 are the primary focus of the lens)

Which metal is used in a solar panel?

Most of the sources of energy that we use represent stored solar energy. Which of the following is not ultimately derived from the sun's energy ? (a) wind energy (b) geothermal energy (c) fossil fuels (d) biomass

The mass defect in a nucleus is because of?