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?

Hyper velocity

critical velocity

laminar velocity

stream velocity

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

1/8th

1/6th

1/4th

1/10th

#3. 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 _____.

elevation of roads

tempering of roads

cornering of roads

banking of roads

#4. 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

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

None of the above

it increases

it decreases

it remains same

#6. Why is a little liquid drop spherical?

due to low density

due to low viscosity

due to surface tension

due to hydrogen bonding

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

1.5 meter

98.5 cm

99.3 cm

2 meter

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

10–6 metre

10–9 metre

10–8 metre

10–7 metre

#9. Who created the mercury barometer?

Blaise Pascal

Albert Einstein

Evangelista Torricelli

Daniel Bernoulli

#10. The ENT doctor's head mirror is__:

Plano-convex

Convex

Concave

Plane

#11. What exactly is a flawlessly black body?

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

A body painted black on all sides

#12. Which of the following are electrochemical cells?

None of the above

Both a and b

Galvanic cells

Electrolytic cells

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

more pressure than dry air.

less density than dry air.

more density than dry air.

less pressure than dry air.

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

Pressure is a vector quantity

Pressure is a scalar quantity

None of the above

Pressure is a scalar quantity but obeys vector laws

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

Adhesive force

None

both a and b

Cohesive force

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

Hydro-meter

Venturi-meter

Bernoulli-meter

Torri-meter

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

inversely as the square of the distance between the charges

Both a and b

None of the above

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

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

Submarines

Ships

None of the above

Balloons

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

All of the above

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

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

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

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

None

Electromagnetic waves

Sound waves

Both a and b

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

Candela

Knots

Decibels

Ampere

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

Rotary Motion

Linear Motion

Periodic Motion

Rotational Motion

#23. What is the main cause of capillarity?

pressure difference

velocity gradient

difference in weight of fluids

temperature difference

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

1000 m/s

300000 m/s

3 x 108 m/s

Different for different waves

#25. What is radioactivity's SI unit?

decibel

ampere

cobolt

becquerel

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

both magnitude and direction are same

magnitudes are same but directions are opposite

only their directions are same

only their magnitudes are same

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

T = tc – 100

T = tc + 273.15

T = tc – 273.15

T = tc + 100

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

Temperature of environment

Absolute temperature of the gas

Velocity of Molecules

Mass of Molecules

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

5.55 × 103 kg m–3

3.57 × 103 kg m–3

1.06 × 103 kg m–3

2

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

2 x Total energy transferred/Speed of light

Total energy transferred/Speed of light

Total energy transferred/ 2 x Speed of light

None of the above

#31. 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?

Absorptive power

Radiation limit

Coefficient of volume expansion

Thermal strain

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

it cooks the food at low pressure

boiling point decreases with rise of pressure

higher temperature is attained for cooking

the material of the cooker is a good conductor

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

30°

0°

180°

90°

#34. How much does Planck's constant weigh?

6.6 × 10–34 J s

3.6 × 10–34 J s

6.6 × 10–17 J s

6.6 × 10–24 J s

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

beta-emission

alpha-emission

gamma-emission

oxidation

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

Temperature

Mass

Energy

Density

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

All have the same

Alpha

Gamma

Beta

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

Ohm’s Law

Hooke’s Law

Kirchhoff’s First Law

Lenz’s Law

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

to decrease the resistance

to increase the current flow

ro decrease the voltage momentarily

to decrease the current flow

#40. 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

None of the above

Efficiency of a heat engine is always unity

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

Total energy transferred/ 2 x Speed of light

2 x Total energy transferred/Speed of light

Total energy transferred/Speed of light

None of the above

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

Resistance

Current

Conductance

Potential Difference

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

NOT

Both a and b

NOR

NAND

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

Uniform speed, variable acceleration

Uniform speed, uniform velocity

Uniform velocity, variable acceleration

Uniform speed, variable velocity

#45. Which of the following statements regarding a cell's EMF is true?

None of the above

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

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

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

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

All of the above

Silicon

Gallium Arsenide

Germanium

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

Resistance

Potential Difference

Current

Conductance

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

Reflection

Convergence

Refraction

Dispersion

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

Newton’s third law of motion

Newton’s first law of motion

Conservation of energy

Backward thrust of gases produced

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

Fluorescent tube light

LED bulb

Incandescent bulb

Compact fluorescent lamp

Results

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

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

#3. 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 _____.

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

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

#6. Why is a little liquid drop spherical?

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

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

#9. Who created the mercury barometer?

#10. The ENT doctor's head mirror is__:

#11. What exactly is a flawlessly black body?

#12. Which of the following are electrochemical cells?

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

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

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

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

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

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

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

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

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

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

#23. What is the main cause of capillarity?

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

#25. What is radioactivity's SI unit?

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

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

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

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

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

#31. 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?

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

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

#34. How much does Planck's constant weigh?

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

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

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

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

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

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

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

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

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

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

#45. Which of the following statements regarding a cell's EMF is true?

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

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

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

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

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

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