GK Questions with answers on Science: Physics Set V

GK Questions with answers on Science: Physics Set V, in this set you will find repository of 10 Multiple Choice Questions that will helps the aspirants to attune and equipped for different competitive examinations as well as academic examinations.

1. Which of the following is the function of superconductor?

A. It conduct electricity at low temperature

B. It offer high resistance to the flow of current

C. It offer no resistance to the flow of electricity

D. It conduct electricity at high temperatures

Ans: C

2. Which of the following devices is run by power circuit in the house?

A. Tube-lights

B. Electric iron

C. Television

D. Radio

Ans: B

3. Which of the following wires is necessary in the house?

A. Live wire

B. Earth wire

C. Neutral wire

D. All of the above

Ans: D

4. Which colour of insulation covering is there on the earth wire that goes from main switch to our rooms?

A. Red

B. Black

C. Green

D. Yellow

Ans: C

5. What is the advantage of parallel connection of circuits?

A. Same voltage is available

B. All appliances get fused

C. Fluctuation

D. All of the above

Ans: A

6. Which of the following statement(s) is/are correct about the Refraction Rules for a Diverging Lens?

A. Any incident ray travelling parallel to the principal axis of a diverging lens will refract through the lens and travel in line with the focal point (i.e., in a direction

such that its extension will pass through the focal point).

B. Any incident ray travelling towards the focal point on the way to the lens will refract through the lens and travel parallel to the principal axis.

C. Both A & B

D. None of the above

Ans: C

7. Which of the following is/are the components of Camera?

A. The body which is light tight and contains all the mechanical parts.

B. The lens which is a convex (converging) lens).

C. The film or a charged couple device in the case of a digital camera.

D. All of the above

Ans: D

8. Which of the following statement(s) is/are correct about Magnifying Glass?

I. It produces an upright, magnified virtual image.

II. The virtual image produced is on the same side of the lens as the object.

III. For a magnified image to be observed the distance between the object and the lens must be shorter than the focal length of the lens.

Which is/are correct statement (s) is/are correct?

A. Only I

B. Only II

C. Both II & III

D. All of the above

Ans: D

9. Consider the following statement(s) related to the Concave lens

I. When parallel rays of light pass through a concave lens the refracted rays diverge so that they appear to come from one point called the principal focus.

II. The distance between the principal focus and the centre of the lens is called the focal length.

III. The image formed is virtual and bigger

Which is/are correct statement (s) is/are correct?

A. Only I

B. Only II

C. Both I & II

D. All of the above

Ans:  C

10. Which of the following statement(s) is/are correct about Refraction Rules for a Converging Lens?

A. Any incident ray travelling parallel to the principal axis of a converging lens will refract through the lens and travel through the focal point on the opposite side

of the lens.

B. Any incident ray travelling through the focal point on the way to the lens will refract through the lens and travel parallel to the principal axis.

C. Both A & B

D. None of the above

Ans: C

GK Questions with answers on Science: Physics Set IV

GK Questions with answers on Science: Physics Set IV, in this set you will find repository of 10 Multiple Choice Questions that will helps the aspirants to attune and equipped for different competitive examinations as well as academic examinations.

1. What do we called when the sound of frequency will be below 20 Hz?

A. Audio sounds

B. Infrasonic

C. Ultrasonic

D. Supersonics

Ans: B

2. Which of the following is the correct reason for spherical droplet of mercury as compared to the droplet of water spreads on the glass plates?

A. Due to metallic properties of Mercury

B. Mercury is heavier than water

C. Cohesion of mercury is greater than its adhesion with glass

D. Cohesion of water is greater than its adhesion with glass

Ans: C 

3. Why impurities are added to a semi-conductor?  

A. To increase its life

B. To enables it to withstand higher voltages

C. To increase its electrical conductivity

D. To increase its electrical resistivity

Ans: C   

4. Which of the following statement (s) is/are correct about thermal expansion

A. The change in temperature of a body causes expansion or contraction of that body.

B. Most of the substances expand on heating and contract on cooling.

C. Both A & B

D. None of the above

Ans: C

5. Consider the following statement (s) regarding Conductors

I. Conductors are materials that permit electrons to flow freely from particle to particle.

II. Conductors are materials that permit electrons to flow freely from atom to atom.

Which is/are correct statement (s)is/are correct?

A. Only I

B. Only II

C. Both I & II

D. All of the above

Ans: A

6. Consider the following statement (s) about Doppler Effect.  

I. Johann Christian Doppler, an Austrian physicist first proposed Doppler effect in 1842.

II. Doppler Effect is observed that the pitch of the sound is higher when we approach a stationary source of sound with high speed.

Which is/are correct statement (s) is/are correct?

A. Only I

B. Only II

C. Both I & II

D. All of the above

Ans: C

7. Which of the following is the SI unit of viscosity?

A. Poiseuille (PI)

B. Pascal

C. Degree

D. None of the above

Ans: A

8. Consider the following statement (s) related to the Moment of inertia

I. It is the name given to rotational inertia, the rotational analog of mass for linear motion.

II. The moment of inertia of a point mass with respect to an axis is defined as the product of the mass times the distance from the axis squared.

Which is/are correct statement (s) is/are correct?

A. Only I

B. Only II

C. Both I & II

D. All of the above

Ans: C   

9. Consider the following statement(s) regarding natural phenomena i.e Mirage

I. It is an optical phenomenon that creates the illusion of water and results from the refraction of light through a non-uniform medium.

II. It is happen due to the refraction of  light

Which is/are correct statement (s) is/are correct?

A. Only I

B. Only II

C. Both I & II

D. All of the above

Ans: C     

10. Which statement (s) is/are involves the principle of capillary action?

A. Oil raise up the wick in a lamp

B. It is enhanced in trees by branching, evaporation at the leaves creating depressurization

C. Both A & B

D. None of the above

Ans: C

GK Questions with answers on Science: Physics Set III

GK Questions with answers on Science: Physics Set III, in this set you will find repository of 10 Multiple Choice Questions that will helps the aspirants to attune and equipped for different competitive examinations as well as academic examinations.

1.Consider the following statement (s) related to the Magnetism

I.It is a class of physical phenomena that are mediated by magnetic fields.

II.Electric currents and the magnetic moments of elementary particles give rise to a magnetic field, which acts on other currents and magnetic moments.

Which is/are correct statement (s)?

A.Only I

B.Only II

C.Both I & II

D.Neither I nor II

Ans: C

2. Consider the following statement (s) related to the force of friction

I.It is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.

II.When surfaces in contact move relative to each other, the friction between the two surfaces converts kinetic energy into thermal energy (that is, it converts

work to heat).

Which is/are correct statement (s)?

A.Only I

B.Only II

C.Both I & II

D.Neither I nor II

Ans: C

3. Which of the following is/ are correct definition of types of friction?

I.Dry friction resists relative lateral motion of two solid surfaces in contact.

II.Fluid friction describes the friction between layers of a viscous fluid that are moving relative to each other.

III.Lubricated friction is a case of fluid friction where a lubricant fluid separates two solid surfaces.

Which is/are correct statement (s)?

A.Only I

B.Only II

C.Both I & II

D.All of the above

Ans: D

4. Consider the following statement (s) about frequency

I.It is describes as the number of waves that pass a fixed place in a given amount of time.

II.It is measured in the hertz unit, named in honour of the 19th-century German physicist Heinrich Rudolf Hertz.

Which is/are correct statement (s)?

A.Only I

B.Only II

C.Both I & II

D.All of the above

Ans: C

5. Consider the following statement (s) is associated with the amplitude

I.It is the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position.

II.It is equal to one-half the length of the vibration path.

Which is/are correct statement (s)?

A.Only I

B.Only II

C.Both I & II

D.All of the above

Ans: C

6. Which of the following statement (s) is correct about luminous Intensity?

A.It is a measure of the wavelength-weighted power emitted by a light source in a particular direction per unit solid angle.

B.The SI unit of luminous intensity is the candela (cd), an SI base unit.

C.Only A

D.Both A & B

Ans: D

7. Consider the following statement (s) is not related with infrasonic frequency

I.It refers to sound waves below the frequencies of audible sound, and nominally includes anything under 20 Hz.

II.It refers to sound waves below the frequencies of audible sound, and nominally includes anything beyond 20 Hz.

Which is/are correct statement (s)?

A.Only I

B.Only II

C.Both I & II

D.All of the above

Ans: B

8. Consider the following statement (s) about stellar scintillation

I.The scientific name for the twinkling of stars.

II.We see them from the Earth's surface because we are viewing them through thick layers of turbulent (moving) air in the Earth's atmosphere.

Which is/are correct statement (s)?

A.Only I

B.Only II

C.Both I & II

D.All of the above

Ans: C

9. Which of the following statement (s) is/are correct about viscosity?

A.It is a measure of its resistance to gradual deformation by shear stress or tensile stress.

B.It is typically measured in dynes/cm, the force in dynes required to break a film of length 1 cm.

C.It is the ability of a body to resist a distorting influence or stress and to return to its original size and shape when the stress is removed.

D.None of the above

Ans: A

10. Which of the following is the property of RADAR?  

A.Locating submerged submarines

B.Receiving signals in a radio receiver

C.Locating geostationary satellites

D.Detecting and locating the position of objects such as aeroplanes

Ans: D

GK Questions with answers on Science: Physics Set II

GK Questions with answers on Science: Physics Set II, in this set you will find repository of 10 Multiple Choice Questions that will helps the aspirants to attune and equipped for different competitive examinations  as well as academic examinations.

1. Which of the following is measured in Pa (Pascal)?

A.Thrust

B.Pressure

C.Frequency

D.Conductivity

Ans: B

2. Why the Planets do not twinkle?

A.Because they emit light of a constant intensity

B.Because their distance from the earth does not change with time

C.Because they are very far away from the earth resulting in decrease in intensity of light

D.Because they are nearer to earth and hence we receive a greater amount of light and, therefore minor variations in the intensity are not noticeable

Ans: D

3. What make the metals are good conductors of electricity?

A.Because they contain free electrons

B.Because the atoms are lightly packed

C.Because they have high melting point

D.All of the above

Ans: A

4. What will happen to the water when a thin capillary tube is replaced with another insufficient length of tube?

A.will overflow

B.will not rise

C.depressed

D.change its meniscus

Ans: B

5. Which of the following is the correct pair that have not identical dimension of physical quantities?

A.Pressure and Young's modules

B.Planck's constant and Angular momentum

C.Impelling force or strength and moment of force

D.Physical energy or intensity and rate of change of linear momentum

Ans: C

6.  Consider the following statement (s) related to the momentum

I.If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same.

II.It is the product of the mass and velocity of an object.

Which is/are correct statement (s)?

A.Only I

B.Only II

C.Both I & II

D.Neither I nor II

Ans: C

7. Consider the following statement (s) related to the scalar quantity

I.It is a one dimensional measurement of a quantity, like temperature, or weight.

II.It is a physical quantity that can be described by a single element of a number field such as a real number, often accompanied by units of measurement.

Which is/are correct statement (s)?

A.Only I

B.Only II

C.Both I & II

D.Neither I nor II

Ans: C

8.  Which of the following is the correct function of Rectifiers (convertor)?

A.Direct current to Alternating current

B.Alternating current to Direct current

C.High voltage to low voltage

D.Low voltage to high voltage

Ans: B

9. Which of the following is not emitted by radioactive substance?

A.Electrons

B.Electromagnetic radiations

C.Alpha particles

D.Neutrons

Ans: D

10. Consider the following statement (s) related to the quantity (vector or a scalar)

I.Vectors are quantities that are fully described by a magnitude (or numerical value) alone.

II.Scalars are quantities that are fully described by both a magnitude and a direction.

Which is/are correct statement (s)?

A.Only I

B.Only II

C.Both I & II

D.Neither I nor II

Ans: D