Saved Bookmarks
This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
How many hectares of forest land had been lost from 1951 to 1976 due to major river valley projects in India? |
|
Answer» How many hectares of forest land had been lost from 1951 to 1976 due to major river valley projects in India? |
|
| 2. |
60. If an electric iron of 1200 watt is used for 30 min every day find electricty consumed in month of april Tell in two methods |
| Answer» 60. If an electric iron of 1200 watt is used for 30 min every day find electricty consumed in month of april Tell in two methods | |
| 3. |
What is the amount of mass lost in grams, in order to result in an energy of 2×106 kWh? |
|
Answer» What is the amount of mass lost in grams, in order to result in an energy of 2×106 kWh? |
|
| 4. |
State the role of eye lens in the human eye? |
|
Answer» State the role of eye lens in the human eye? |
|
| 5. |
In the given diagram of a DC motor, the direction of flow of electrons in the left arm is: |
Answer» In the given diagram of a DC motor, the direction of flow of electrons in the left arm is: |
|
| 6. |
A wire of resistance 1 ohm is stretched so that its diameter changes by 0.25%. Find percent change in resistance. O |
| Answer» A wire of resistance 1 ohm is stretched so that its diameter changes by 0.25%. Find percent change in resistance. O | |
| 7. |
A wire frame ABCDEFA meets the yz plane on a circle y2+z2=4 as shown in the diagram. If in this region a time varying uniform magnetic field B=B0t2^j exists , then find the net current flowing through the wire frame if its resistance is equal to R. |
|
Answer» A wire frame ABCDEFA meets the yz plane on a circle y2+z2=4 as shown in the diagram. If in this region a time varying uniform magnetic field B=B0t2^j exists , then find the net current flowing through the wire frame if its resistance is equal to R. |
|
| 8. |
What is meant by mean free path? |
| Answer» What is meant by mean free path? | |
| 9. |
What is the relationship between magnification and focal length of a spherical mirror |
|
Answer» What is the relationship between magnification and focal length of a spherical mirror |
|
| 10. |
A person connects too many electrical appliances to a single socket in his house. When all these electrical appliances connected to the single socket are switched on at the same time, the electric fuse of circuit blows off.(a) What is the process of connecting too many electrical appliances to a single socket known as?(b) Which effect of electric current is responsible for the blowing off of fuse wire? |
|
Answer» A person connects too many electrical appliances to a single socket in his house. When all these electrical appliances connected to the single socket are switched on at the same time, the electric fuse of circuit blows off. (a) What is the process of connecting too many electrical appliances to a single socket known as? (b) Which effect of electric current is responsible for the blowing off of fuse wire? |
|
| 11. |
two long parallel current carring wire I1=30A& I2=60A caring current in opposite direction distance between them is 2m.another wire carring current of 10A opposite to i2is place between then net magnetic field per unit length on 3ed wire is |
| Answer» two long parallel current carring wire I1=30A& I2=60A caring current in opposite direction distance between them is 2m.another wire carring current of 10A opposite to i2is place between then net magnetic field per unit length on 3ed wire is | |
| 12. |
A doctor has prescribed a corrective lens of power +1.5 D. Find the focal length of the lens. Is the prescribed lens diverging or converging? |
|
Answer» A doctor has prescribed a corrective lens of power +1.5 D. Find the focal length of the lens. Is the prescribed lens diverging or converging? |
|
| 13. |
why when a ray fall on a glass salb normally to it dont suffer refraction.Although the medium is denser |
| Answer» why when a ray fall on a glass salb normally to it dont suffer refraction.Although the medium is denser | |
| 14. |
A concave mirror form an erect and three times magnified image on the axis of the mirror at a distance of 32cm from the object. What is the focal length of the mirror? |
| Answer» A concave mirror form an erect and three times magnified image on the axis of the mirror at a distance of 32cm from the object. What is the focal length of the mirror? | |
| 15. |
What is valence band and conduction band?What is c model? |
|
Answer» What is valence band and conduction band? What is c model? |
|
| 16. |
2. A radio station broadcast at a frequency of 1200 kHz. What is the wavelength and wave number of these radio waves ? |
| Answer» 2. A radio station broadcast at a frequency of 1200 kHz. What is the wavelength and wave number of these radio waves ? | |
| 17. |
A ship sends a sonar wave to the sea bed which is flat and measured several times over a large area, One day the reflected sound wave takes longer time than in previous measurements. The possible reason is: |
|
Answer» A ship sends a sonar wave to the sea bed which is flat and measured several times over a large area, One day the reflected sound wave takes longer time than in previous measurements. The possible reason is: |
|
| 18. |
A ray of light strikes a plane mirror at an angle of 40∘ to the mirror surface. What will be the angle of reflection ? |
|
Answer» A ray of light strikes a plane mirror at an angle of 40∘ to the mirror surface. What will be the angle of reflection ? |
|
| 19. |
What is mechanism of SN1 |
| Answer» What is mechanism of SN1 | |
| 20. |
Arrange the following electromagnetic radiations per quantum in the order of increasing energy: A: Blue light B: Yellow light C: X-ray D: Radiowave. |
|
Answer» Arrange the following electromagnetic radiations per quantum in the order of increasing energy: A: Blue light B: Yellow light C: X-ray D: Radiowave. |
|
| 21. |
During sunrise and sunset, the colour of sun appears to be ______ . |
|
Answer» During sunrise and sunset, the colour of sun appears to be ______ . |
|
| 22. |
The magnetic field of a solenoid can be made stronger by |
|
Answer» The magnetic field of a solenoid can be made stronger by |
|
| 23. |
What is meant by magnification ? Write its expression. What is its sign for the (a) real (b) virtual, image ? |
|
Answer» What is meant by magnification ? Write its expression. What is its sign for the (a) real (b) virtual, image ? |
|
| 24. |
What is bio mass? |
|
Answer» What is bio mass? |
|
| 25. |
When the terminals of an EMF device are connected, and the charges on the terminals are drawn out through the wires, why does its potential difference between terminals not come down eventually? |
|
Answer» When the terminals of an EMF device are connected, and the charges on the terminals are drawn out through the wires, why does its potential difference between terminals not come down eventually? |
|
| 26. |
Two exactly similar electric lamps are arranged first in parallel, and then in series. If the parallel and series combinations of lamps were connected to 220 V supply, what will be the ratio of electric power consumed in parallel and series combinations? |
|
Answer» Two exactly similar electric lamps are arranged first in parallel, and then in series. If the parallel and series combinations of lamps were connected to 220 V supply, what will be the ratio of electric power consumed in parallel and series combinations? |
|
| 27. |
If n,e,tau,m are representing electron density , charge, relaxation time and mass of an electron respectively then the resistance of wire of length l and cross sectional area A is given by |
| Answer» If n,e,tau,m are representing electron density , charge, relaxation time and mass of an electron respectively then the resistance of wire of length l and cross sectional area A is given by | |
| 28. |
Resistivity of a wire depends upon: |
|
Answer» Resistivity of a wire depends upon: |
|
| 29. |
Simply the given function (C/m3)x(m/s) Where C= coulomb m = meters s- sec |
|
Answer» Simply the given function (C/m3)x(m/s) Where C= coulomb m = meters s- sec |
|
| 30. |
A proton of charge 1.6×10−19 C and mass m=1.67×10−27 kg is shot with a speed 8×106 m/s at an angle of 30∘with x-axis. A uniform magnetic field B=0.30 T exist along the x-axis. Find the radius of the helical path followed by the proton ? |
|
Answer» A proton of charge 1.6×10−19 C and mass m=1.67×10−27 kg is shot with a speed 8×106 m/s at an angle of 30∘with x-axis. A uniform magnetic field B=0.30 T exist along the x-axis. Find the radius of the helical path followed by the proton ? |
|
| 31. |
36. A glass vessel in the shape of a triangular prism is filled with water and light is incident normally on the face xy. If the refractive indices for water and glass are 4/3 and 3/2 resp.,, total internal reflection will occur at the glass air surface xz only for sin theta greater than |
| Answer» 36. A glass vessel in the shape of a triangular prism is filled with water and light is incident normally on the face xy. If the refractive indices for water and glass are 4/3 and 3/2 resp.,, total internal reflection will occur at the glass air surface xz only for sin theta greater than | |
| 32. |
A liquid X has specific heat capacity higher than the liquid Y. Which liquid is useful as (i) coolant in car radiators, and (ii) heat reservoir to keep juice bottles without freezing? |
|
Answer» A liquid X has specific heat capacity higher than the liquid Y. Which liquid is useful as (i) coolant in car radiators, and (ii) heat reservoir to keep juice bottles without freezing? |
|
| 33. |
You are provided with 48 cells each of emf 2 volts and internal resistance 4 ohms. What maximum current can flow in the circuit having an external resistance of 12 Ω? |
|
Answer» You are provided with 48 cells each of emf 2 volts and internal resistance 4 ohms. What maximum current can flow in the circuit having an external resistance of 12 Ω? |
|
| 34. |
One end of a cylindrical glass rod ends in a hemispherical surface of radius R=20mm. Find the image distance (in mm) of a point object on the axis of the rod, 80mm to the left of the vertex. The rod is in air.120 |
Answer» One end of a cylindrical glass rod ends in a hemispherical surface of radius R=20mm. Find the image distance (in mm) of a point object on the axis of the rod, 80mm to the left of the vertex. The rod is in air.
|
|
| 35. |
does stp or ntp are same |
| Answer» does stp or ntp are same | |
| 36. |
A particle in uniform motion can possess-a)radial acceleration b)tangential acceleration c)both radial and tangential accelerations d)either radial nor tangential acceleration |
| Answer» A particle in uniform motion can possess-a)radial acceleration b)tangential acceleration c)both radial and tangential accelerations d)either radial nor tangential acceleration | |
| 37. |
What is a band gap? Why is there a gap between the Valence energy band and the conduction energy band? |
| Answer» What is a band gap? Why is there a gap between the Valence energy band and the conduction energy band? | |
| 38. |
The speed of light in a medium of refractive index 2 is? |
|
Answer» The speed of light in a medium of refractive index 2 is? |
|
| 39. |
Question 6State whether the following statements are true or false.(a) An electric motor converts mechanical energy into electrical energy.(b) An electric generator works on the principle of electromagnetic induction.(c) The field at the centre of a long circular coil carrying current will be parallel straight lines.(d) A wire with a green insulation is usually the live wire of an electric supply. |
|
Answer» Question 6 State whether the following statements are true or false. (a) An electric motor converts mechanical energy into electrical energy. (b) An electric generator works on the principle of electromagnetic induction. (c) The field at the centre of a long circular coil carrying current will be parallel straight lines. (d) A wire with a green insulation is usually the live wire of an electric supply. |
|
| 40. |
An electromagnetic radiation has energy of 13.2 Kev, then radiation belongs to the region. 1.Microwave 2.X-ray 3.Infrared 4.Visible |
| Answer» An electromagnetic radiation has energy of 13.2 Kev, then radiation belongs to the region. 1.Microwave 2.X-ray 3.Infrared 4.Visible | |
| 41. |
which gas was present in the discharge tube during tthe cathode ray experiment |
| Answer» which gas was present in the discharge tube during tthe cathode ray experiment | |
| 42. |
A satellite gets unstable in its orbit and starts to fall towards earth and also starts burning. If the satellite had a potential energy of 1000 joules initially and by the time it reaches the surface of the earth it attains a kinetic energy of 500 joules then how much energy is spent in heating the satellite? |
|
Answer» A satellite gets unstable in its orbit and starts to fall towards earth and also starts burning. If the satellite had a potential energy of 1000 joules initially and by the time it reaches the surface of the earth it attains a kinetic energy of 500 joules then how much energy is spent in heating the satellite? |
|
| 43. |
Which of these is not true with respect to the observations made by the Hubble Space Telescope? |
|
Answer» Which of these is not true with respect to the observations made by the Hubble Space Telescope? |
|
| 44. |
Which of the following is a wrong description of binding energy of a nucleus? |
|
Answer» Which of the following is a wrong description of binding energy of a nucleus? |
|
| 45. |
Two planets of radii r1 and r2 are made from the same material. The ratio of the acceleration due to gravity g1g2 at the surface of the two planets is: |
|
Answer» Two planets of radii r1 and r2 are made from the same material. The ratio of the acceleration due to gravity g1g2 at the surface of the two planets is: |
|
| 46. |
Figures A and B show a bulb connected to a cell in two different ways.(i) What will be the direction of the current through the bulb in both the cases? (Q to P or P to Q)(ii) Will the bulb glow in both the cases?(iii) Does the brightness of the glowing bulb depend on the direction of current through it? |
Answer» Figures A and B show a bulb connected to a cell in two different ways. (i) What will be the direction of the current through the bulb in both the cases? (Q to P or P to Q) (ii) Will the bulb glow in both the cases? (iii) Does the brightness of the glowing bulb depend on the direction of current through it? |
|
| 47. |
A long straight wire of radius a carries a steady current i. The current is uniformly distributed across its cross section. The ratio of magnetic field at a and 2a is |
| Answer» A long straight wire of radius a carries a steady current i. The current is uniformly distributed across its cross section. The ratio of magnetic field at a and 2a is | |
| 48. |
Explain the following 1. Advanced sunrise and delayed sunset 2. Star twinkle but planets do not twinkle. 3. Shape of the sun at sunrise and sunset |
| Answer» Explain the following 1. Advanced sunrise and delayed sunset 2. Star twinkle but planets do not twinkle. 3. Shape of the sun at sunrise and sunset | |
| 49. |
ntA light ray of angle of incidence 40 degree emerged from the prism in minimum deviation position. Then what is the angle of incidence on the second surface?n |
| Answer» ntA light ray of angle of incidence 40 degree emerged from the prism in minimum deviation position. Then what is the angle of incidence on the second surface?n | |
| 50. |
Two students (A) and (B) connect their two given resistors R1 and R2 in the manners shown below :Student (A) connects the terminals marked (b1) and (c1) while student (B) connects the terminals marked (d2) and (c2) in their respective circuits at the points marked X and Y.Which one of the following is correct in relation to the above arrangements?(1) both the students will determine the equivalent resistance of the series combination of the two resistors.(2) both the students will determine the equivalent resistance of the parallel combination of the two resistors(3) student (A) will determine the equivalent resistance of the series combination while student (B) will determine the equivalent resistance of the parallel combination of the two resistors.(4) student (A) will determine the equivalent resistance of the parallel combination while student (B) will determine the equivalent resistance of the series combination of the two resistors. |
Answer» Two students (A) and (B) connect their two given resistors R1 and R2 in the manners shown below :  Student (A) connects the terminals marked (b1) and (c1) while student (B) connects the terminals marked (d2) and (c2) in their respective circuits at the points marked X and Y. Which one of the following is correct in relation to the above arrangements? (1) both the students will determine the equivalent resistance of the series combination of the two resistors. (2) both the students will determine the equivalent resistance of the parallel combination of the two resistors (3) student (A) will determine the equivalent resistance of the series combination while student (B) will determine the equivalent resistance of the parallel combination of the two resistors. (4) student (A) will determine the equivalent resistance of the parallel combination while student (B) will determine the equivalent resistance of the series combination of the two resistors. |
|
