Physics General Science GK - 🌍The Hindi Biography✍🏻

#1. What is the name given to the greatest velocity of a fluid in a tube while the flow stays streamlined?

stream velocity

laminar velocity

critical velocity

Hyper velocity

#2. According to Coulomb’s law, which of the following is true regarding the force between two point charges?

Both a and b

None of the above

inversely as the square of the distance between the charges

directly proportional to the product of the magnitude of the two charges

#3. Which of the following is more beneficial to energy conservation?

Incandescent bulb

LED bulb

Fluorescent tube light

Compact fluorescent lamp

#4. The average kinetic energy of molecules in an ideal gas is exactly proportional to__:

higher temperature is attained for cooking

it cooks the food at low pressure

the material of the cooker is a good conductor

boiling point decreases with rise of pressure

#5. What is the name given to the effort done to transport a unit charge from one location to another?

Current

Conductance

Potential Difference

Resistance

#6. What is the order of distance for active Vander Wall forces?

10–9 metre

10–7 metre

10–8 metre

10–6 metre

#7. What is the contact angle between pure water and glass?

30°

0°

90°

180°

#8. What do we term the phenomena of light being deflected while passing from one medium to another obliquely?

Reflection

Dispersion

Convergence

Refraction

#9. Which of the following is NOT an application of the floatation principle?

Submarines

Ships

Balloons

None of the above

#10. The entire momentum imparted to a surface by an electromagnetic wave is represented by which of the following?

None of the above

Total energy transferred/ 2 x Speed of light

Total energy transferred/Speed of light

2 x Total energy transferred/Speed of light

#11. What is the link between Kelvin scale (T) and Celsius scale (tc) temperature?

T = tc + 273.15

T = tc – 273.15

T = tc – 100

T = tc + 100

#12. Which of the following laws indicates that the total current entering and exiting a junction is the same?

Kirchhoff’s First Law

Lenz’s Law

Ohm’s Law

Hooke’s Law

#13. The average kinetic energy of an ideal gas’s molecules is directly proportional to__:

Temperature of environment

Velocity of Molecules

Mass of Molecules

Absolute temperature of the gas

#14. Which of these is referred to as a Universal logic gate?

NAND

NOT

Both a and b

NOR

#15. Which of the following are electrochemical cells?

Electrolytic cells

Both a and b

None of the above

Galvanic cells

#16. What exactly is a flawlessly black body?

A body painted black on all sides

A body which has zero coefficient of linear expansion

A body which absorbs all the radiations incident on it

A body which has zero absorptive power

#17. The function of a fluorescent light choke is__:

to increase the current flow

to decrease the current flow

ro decrease the voltage momentarily

to decrease the resistance

#18. What do we name a motion that repeats itself after a certain amount of time?

Rotational Motion

Periodic Motion

Linear Motion

Rotary Motion

#19. Which of these is a material used to make semiconductor devices?

Silicon

Germanium

Gallium Arsenide

All of the above

#20. Which of the following statements concerning transverse mechanical waves is true?

they can travel through gases but not solids

they can travel through solids and liquids

they can travel through solids but not liquids

they can travel through solids and gases

#21. What is the main cause of capillarity?

pressure difference

velocity gradient

temperature difference

difference in weight of fluids

#22. What is radioactivity’s SI unit?

ampere

cobolt

becquerel

decibel

#23. Which of the following is the unit of sound intensity measurement?

Knots

Candela

Decibels

Ampere

#24. How much does Planck’s constant weigh?

6.6 × 10–17 J s

6.6 × 10–24 J s

6.6 × 10–34 J s

3.6 × 10–34 J s

#25. Which of the following indicates the entire momentum imparted to a surface by an electromagnetic wave?

None of the above

Total energy transferred/ 2 x Speed of light

Total energy transferred/Speed of light

2 x Total energy transferred/Speed of light

#26. When are two particles considered to be in the same phase?

if the time interval is an even multiple of (T/ 2)

if the path difference is an even multiple of (λ / 2)

All of the above

if the phase difference between them is an even multiple of π

#27. Which of the following waves exhibits the Doppler effect?

Both a and b

None

Electromagnetic waves

Sound waves

#28. How fast are electromagnetic waves in a vacuum?

300000 m/s

3 x 108 m/s

Different for different waves

1000 m/s

#29. Which of the following statements concerning a body’s motion around a circular route is correct?

Uniform speed, uniform velocity

Uniform speed, variable acceleration

Uniform speed, variable velocity

Uniform velocity, variable acceleration

#30. Which of these rays has the most ionising potential?

Gamma

All have the same

Beta

Alpha

#31. An object’s weight on the moon is equivalent to ______ of its weight on Earth.

1/10th

1/6th

1/8th

1/4th

#32. Which of the following intermolecular forces allows us to write with chalk on a blackboard?

Cohesive force

None

both a and b

Adhesive force

#33. Which of the following statements regarding a cell’s EMF is true?

it is the potential difference between the electrodes when there is no current in the cell

it is the potential difference between the electrodes when current is flowing in the cell

None of the above

it is the drift velocity of the electrons when there is no current in the cell

#34. What causes a cannon to recoil after firing?

Newton’s third law of motion

Backward thrust of gases produced

Newton’s first law of motion

Conservation of energy

#35. According to the second rule of thermodynamics, which of the following is correct?

Efficiency of a heat engine can never be unity

Efficiency of a heat engine can never be zero

Efficiency of a heat engine is always unity

None of the above

#36. What is the length of the pendulum of a second?

1.5 meter

99.3 cm

2 meter

98.5 cm

#37. Why is a little liquid drop spherical?

due to low viscosity

due to low density

due to surface tension

due to hydrogen bonding

#38. The phenomenon of elevating the outer edge of curving roadways over the inner edge to give the necessary centripetal force to cars in order for them to make a safe turn is known as _____.

cornering of roads

tempering of roads

banking of roads

elevation of roads

#39. What impact does decreasing the distance between the source of the sound and the listener have on perceived frequency?

it remains same

None of the above

it increases

it decreases

#40. A radioactive material does not change (in mass or charge) during__:

oxidation

beta-emission

alpha-emission

gamma-emission

#41. How dense is the entire blood at STP?

3.57 × 103 kg m–3

5.55 × 103 kg m–3

2

1.06 × 103 kg m–3

#42. Who created the mercury barometer?

Albert Einstein

Blaise Pascal

Daniel Bernoulli

Evangelista Torricelli

#43. What is the name given to the effort done to transport a unit charge from one location to another?

Resistance

Current

Potential Difference

Conductance

#44. What is the name of the equipment used to measure the flow rate of an incompressible?

Hydro-meter

Venturi-meter

Torri-meter

Bernoulli-meter

#45. Which of the following statements regarding Pressure is true?

Pressure is a vector quantity

None of the above

Pressure is a scalar quantity but obeys vector laws

Pressure is a scalar quantity

#46. The direction of heat flow is determined by ______.

Temperature

Density

Energy

Mass

#47. Why is the velocity of sound higher in moist air than in dry air?

less pressure than dry air.

less density than dry air.

more density than dry air.

more pressure than dry air.

#48. If two vectors are equal, they are said to be equivalent.

magnitudes are same but directions are opposite

only their directions are same

only their magnitudes are same

both magnitude and direction are same

#49. What is the term for the ratio of radiant energy absorbed by a body at a particular time to total radiant energy incident on it at the same moment?

Radiation limit

Absorptive power

Thermal strain

Coefficient of volume expansion

#50. The ENT doctor’s head mirror is__:

Plane

Convex

Concave

Plano-convex

Results

#1. What is the name given to the greatest velocity of a fluid in a tube while the flow stays streamlined?

#2. According to Coulomb’s law, which of the following is true regarding the force between two point charges?

#3. Which of the following is more beneficial to energy conservation?

#4. The average kinetic energy of molecules in an ideal gas is exactly proportional to__:

#5. What is the name given to the effort done to transport a unit charge from one location to another?

#6. What is the order of distance for active Vander Wall forces?

#7. What is the contact angle between pure water and glass?

#8. What do we term the phenomena of light being deflected while passing from one medium to another obliquely?

#9. Which of the following is NOT an application of the floatation principle?

#10. The entire momentum imparted to a surface by an electromagnetic wave is represented by which of the following?

#11. What is the link between Kelvin scale (T) and Celsius scale (tc) temperature?

#12. Which of the following laws indicates that the total current entering and exiting a junction is the same?

#13. The average kinetic energy of an ideal gas’s molecules is directly proportional to__:

#14. Which of these is referred to as a Universal logic gate?

#15. Which of the following are electrochemical cells?

#16. What exactly is a flawlessly black body?

#17. The function of a fluorescent light choke is__:

#18. What do we name a motion that repeats itself after a certain amount of time?

#19. Which of these is a material used to make semiconductor devices?

#20. Which of the following statements concerning transverse mechanical waves is true?

#21. What is the main cause of capillarity?

#22. What is radioactivity’s SI unit?

#23. Which of the following is the unit of sound intensity measurement?

#24. How much does Planck’s constant weigh?

#25. Which of the following indicates the entire momentum imparted to a surface by an electromagnetic wave?

#26. When are two particles considered to be in the same phase?

#27. Which of the following waves exhibits the Doppler effect?

#28. How fast are electromagnetic waves in a vacuum?

#29. Which of the following statements concerning a body’s motion around a circular route is correct?

#30. Which of these rays has the most ionising potential?

#31. An object’s weight on the moon is equivalent to ______ of its weight on Earth.

#32. Which of the following intermolecular forces allows us to write with chalk on a blackboard?

#33. Which of the following statements regarding a cell’s EMF is true?

#34. What causes a cannon to recoil after firing?

#35. According to the second rule of thermodynamics, which of the following is correct?

#36. What is the length of the pendulum of a second?

#37. Why is a little liquid drop spherical?

#38. The phenomenon of elevating the outer edge of curving roadways over the inner edge to give the necessary centripetal force to cars in order for them to make a safe turn is known as _____.

#39. What impact does decreasing the distance between the source of the sound and the listener have on perceived frequency?

#40. A radioactive material does not change (in mass or charge) during__:

#41. How dense is the entire blood at STP?

#42. Who created the mercury barometer?

#43. What is the name given to the effort done to transport a unit charge from one location to another?

#44. What is the name of the equipment used to measure the flow rate of an incompressible?

#45. Which of the following statements regarding Pressure is true?

#46. The direction of heat flow is determined by ______.

#47. Why is the velocity of sound higher in moist air than in dry air?

#48. If two vectors are equal, they are said to be equivalent.

#49. What is the term for the ratio of radiant energy absorbed by a body at a particular time to total radiant energy incident on it at the same moment?

#50. The ENT doctor’s head mirror is__:

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