TOP 100 Physics MCQS
All Questions for: TOP 100 Physics MCQS
Question 151: The error in measurement may occur due to_________________?
- A The faulty apprentice
- B Due to all reasons in A, B and C
- C The inexperience of a person
- D Inappropriate method
Explanation:
Question 152: The breaking of crystals along definite direction is called _____________________?
- A Homogeneity
- B Isotropy
- C Symmetry
- D Cleavage
Explanation:
Question 153: If a current carrying solenoid is suspended freely it will__________________?
- A be rotating
- B come to rest in N-S direction
- C vibrating like galvanometer needle
- D comes to rest after rotation
Explanation:
Question 154: T.V sets and microwave ovens emit ___________________?
- A ?-rays
- B ?-rays
- C X-rays
- D ?-rays
Explanation:
Question 155: The bulk properties of materials such as their mode of fracture can be related to their____________________?
- A Dislocation
- B Polymerization
- C Cleavage
- D Microstructure
Explanation:
Question 156: The direction of the linear velocity of a body moving in a circle is______________?
- A along the axis of rotation
- B directed away from the centre
- C directed towards the centre
- D along the tangent
Explanation:
Question 157: A Circle has a number of tangents equal to _________?
- A 1
- B 2
- C Infinite
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Question 158: Pair production takes place in the vicinity of a heavy nucleus so that_____________?
- A Net charge is conserved
- B Net energy is conserved
- C All of the above
- D Net momentum is conserved
Explanation:
Question 159: A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is_______________?
- A mg + ma
- B mg
- C mg
- D mg
Explanation:
Question 160: In addition to the daughter nucleus and an electron or positron, the products of a beta decay
- A Neutrino
- B Alpha particle
- C Proton
- D Neutrons
Explanation:
Question 161: If the axis of rotation passes through the body and the body moves around itself then the motion is called:
- A Rectilinear motion
- B Orbital motion
- C Translatory motion
- D Spin motion
Explanation:
Question 162: The alternating voltage is an example of_______________?
- A An analogue waveform
- B A digital waveform
- C None at all
- D Discrete waveform
Explanation:
Question 163: The operational amplifier is______________?
- A A high resistance amplifier
- B A high gain amplifier
- C A low resistance amplifier
- D A high-power amplifier
Explanation:
Question 164: A train is moving with a speed of 100mph. What will be its speed in m/s.?
- A 100 m/s
- B 120 m/s
- C 45 m/s
- D 90 m/s
Explanation:
Question 165: Which one of the following radiation possesses maximum penetrating power ?
- A All have the equal penetrating powe
- B X-rays
- C ?-rays
- D B-rays
Explanation:
Question 166: Adiabatic process is also called______________?
- A Heating process
- B All of the above
- C Heat exchange process
- D Isentropic process
Explanation:
Question 167: The value of ? for diatomic gas is_______________?
- A ? = 1.3
- B None
- C 1.4
- D 1.67
Explanation:
Question 168: The bombardment of nitrogen with alpha particles will produce______________?
- A Neutron
- B Positron
- C Proton
- D Electron
Explanation:
Question 169: The value of acceleration due to gravity is minimum on which of these planets?
- A Neptune
- B Mars
- C Jupiter
- D Mercury
Explanation:
Question 170: A device for producing high-velocity nuclei is ________________?
- A Wilson cloud chamber
- B A mass spectrograph
- C Cloud chamber
- D Linear accelerator
Explanation:
Question 171: The rectangular coordinate system is also called______________?
- A Spherical coordinate system
- B Cylindrical coordinate system
- C Polar coordinate system
- D Cartesian coordinate system
Explanation:
Question 172: Which one of the following is not a donor impurity ?
- A arsenic
- B phosphorus
- C aluminium
- D antimony
Explanation:
Question 173: Relation between linear velocity and angular velocity:
- A s=r
- B v=rw
- C ?s/?t
- D r=vw
Explanation:
Question 174: When a particle of charge q and mass m enters into a uniform magnetic field B moving with a velocity v perpendicular to the direction for the field it describes a circular path of radius___________________?
- A R=qmB/V
- B R=qB/mV
- C R=qmV/B
- D R=mV/qB
Explanation:
Question 175: Rutherford in his atomic model could not explain behavior of ___________ ?
- A Neutrino
- B Neutrons
- C Electrons
- D Protons
Explanation:
Question 176: In bringing an electron towards the second electron, the electrostatic potential energy of the system
- A remains the same
- B becomes zero
- C increases
- D Decreases
Explanation:
Question 177: Ideal fluid is_______________?
- A Possess all properties
- B Steady flow
- C Incompressible
- D Non-viscous
Explanation:
Question 178: Which one of the following radiations possesses maximum velocity ?
- A All of above have the same speed
- B ?-rays
- C ?-rays
- D ?-rays
Explanation:
Question 179: 0.001 kg mass will be equivalent to_________________?
- A 25.00 GWh
- B 0.26 GWh
- C 250 GWh
- D 2.50 GWh
Explanation:
Question 180: Rest mass of a photon is________________?
- A infinite
- B very small
- C zero
- D 1.67 x 10-27 kg
Explanation:
Question 181: The mass-energy relation is the outcome of____________?
- A None of these
- B General theory of relativity
- C Quantum theory
- D Special theory of relativity
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Question 182: In Davisson-Germer experiment the diffracted proton from crystal shows______________?
- A Wave property
- B Quantum property
- C Light property
- D Particle property
Explanation:
Question 183: Gravitation force of sun is__________?
- A None
- B 362 m/s
- C 274 m/s
- D 300 m/s
Explanation:
Question 184: Radioactive materials can be identified by measuring their_______________?
- A Half life
- B Mass
- C Hardness
- D Density
Explanation:
Question 185: How many electrons per second constitute a current of one micro ampere?
- A 10 electrons
- B 6.25
- C one electron
- D 10 electrons
Explanation:
Question 186: The unit of radioactivity curie is equal to________________?
- A 3.74 x 109 disintegration per sec
- B 3.55 x 1010 disintegration per sec
- C 3.60 x 1010 disintegration per sec
- D 3.70 x 1010 disintegration per sec
Explanation:
Question 187: In a half-wave rectifier the r.m.s. value of the A.C. component of the wave is________________?
- A Zero
- B Less than D.C. value
- C More than D.C. value
- D Equal to D.C. value
Explanation:
Question 188: Torque acting on a body determines_______________?
- A Angular acceleration
- B Acceleration
- C Direction of motion of the body
- D Linear acceleration
Explanation:
Question 189: The Fahrenheit and centigrade scales agree to________________?
- A 15.5
- B 273
- C 542
- D 40
Explanation:
Question 190: The process in which no heat enters or leave the system known as _____________?
- A Isobaric
- B Isothermal
- C adiabatic
- D Isochoric
Explanation:
Question 191: At what temperature is the Fahrenheit scale reading equal to twice that of the Celsius scale?
- A 280
- B 360
- C 160
- D 460
Explanation:
Question 192: Newton
- A volume of a given mass of gas increases or decreases
- B temperature remaining constant, volume of a given mass of a gas varies inversely
- C attraction or repulsion between two charges
- D every action there is an equal and opposite reaction
Explanation:
Question 193: The linear momentum of an X-ray photon of wavelength 0.1A is_______________?
- A data is insufficient
- B 6.625x1023N-s
- C 66.25x1023N-s
- D 662.5x1023N-s
Explanation:
Question 194: A body in equilibrium__________________?
- A Always in uniform motion
- B May be at rest or in motion
- C Always at rest
- D May be at rest or in uniform motion
Explanation:
Question 195: Zero error of the instrument is a type of_________________?
- A Classified error
- B Random error
- C Systematic error
- D Personal error
Explanation:
Question 196: In multiplication and division of measurement______________?
- A Absolute uncertainties are added
- B Absolute uncertainties are divided
- C Percentage uncertainties are divided
- D Percentage uncertainties are added
Explanation:
Question 197: Total uncertainty, in the result obtained from the subtraction of two measurements, is equal to_______________?
- A Sum of their absolute uncertainties
- B The product of their absolute uncertainties
- C Division of their absolute uncertainties
- D The difference of their absolute uncertainties
Explanation:
Question 198: The velocity of an oscillating charge as it moves to and fro along a wire is always_____________?
- A constant
- B zero
- C infinite
- D changing
Explanation:
Question 199: In an X-ray tube electrons each of charge e are accelerated through V potential difference allowed to hit a metal target. The wavelength of the X-rays emitted is_______________?
- A he/Vc
- B he/ev
- C impossible to predict
- D eV/h
Explanation:
Question 200: X-ray are________________?
- A of unknown nature
- B high energy photons
- C radio isotopes
- D high energy electrons
Explanation: