Physics MCQ Quiz Hub

1. Which among the following temperature scale is based upon absolute zero?
Celsius
Fahrenheit
Kelvin
Rankine

2. The alpha radiation is not used in radiotherapy because:
It is an ionizing radiation
It is unable to penetrate human skin
It is toxic to human tissues
It is not cost effective

3. If we look at the floating piece of iceberg on the seaapproximately what fraction of it is visible above the seawater level?
1/8th
1/6th
1/10th
1/5th

4. Consider the following:1. Formation of a rainbow2. Dispersion of light3. A coin appears raised when placed in a trough filled with waterWhich among the above refraction?
Only 1 & 2
Only 2 & 3
Only 1 & 3
12 & 3

5. With reference to Miragewhich among the following statements is / are correct?1.The refractive index of hot air is greater than cold air2.When light rays pass from hotter to cooler layers of airthey curve downward3.The phenomenon of Superior mirage is most commonly found in polar regionsChoose the correct option from the codes given below:
Only 1 & 2
Only 2 & 3
Only 1 & 3
12 & 3

6. Which among the following is / are correct statements?1. The images produced by Concave Mirrors are always real images2. The images produced by Flat Mirrors are always virtual images3. Converging Lens can produce virtual as well as real imagesSelect the correct option from the codes given below:
Only 1 is correct
Only 2 is correct
Only 1 & 2 are correct
Only 2 & 3 are correct

7. An object is executing uniform circular motion. Which of the following quantities remain(s) constant during the objects motion?
Velocity and acceleration
Speed and velocity
Speed and acceleration
Speed only

8. Two pieces of ice at 0°C would freeze together if pressed against each other and then released. In this contextwhich among the following is the correct principle in action in this?
The melting point of pure ice decreases with pressure.
The melting point of pure ice increases with Pressure
The melting point of pure ice first increasesthen decreases with pressure
The melting point of pure ice first decreases then increases with pressure

9. What is the difference between GSLV and PSLV?1. While PSLV is designed mainly to deliver the earth-observation satellitesGSLV is designed mainly to deliver the communication-satellites2. While PSLV is a three stage vehicleGSLV is four stage vehicleSelect the correct option from the codes given below:
Only 1
Only 2
Both 1 & 2
Neither 1 nor 2

10. A person runs up two flights of stairs instead of walking up. The person feels more tired because ___?
He does more work when he runs in comparison to when he walks
His power output is greater when he runs in comparison to when he walks
His gravitational force is greater when he runs in comparison to when he walks
He has more inertia when he runs in comparison to when he walks

11. With reference to the Milky way galaxywhich among the following statements is / are correct?1.The Milky Way is a member of the Virgo super cluster2.The two most massive members of the Virgo super cluster are the Milky Way and the Andromeda GalaxyChoose the correct option from the codes given below:
Only 1
Only 2
Both 1 & 2
Neither 1 nor 2

12. Consider the following statements with respect to the Thermionic emission:1. It is caused by electrons or ions that break loose from the metal surface due to heat energy2. A metal cannot emit thermions at all temperaturesWhich among the above statements is / are correct ?
Only 1
Only 2
Both 1 & 2
Neither 1 nor 2

13. Consider the following:X-raysInfra-red raysRadio wavesGamma raysMicrowavesWhich among the following is the correct order of their increasing wavelength?
14235
] 41253
41523
54123

14. Stars closer to the horizon would appear to twinkle more than others normally. What could be the possible explanation to this?Atmosphere is dense at HorizonsThe energy produced from stars keep varyingSelect the correct option from the codes given below:
] Only 1 is correct
Only 2 is correct
Both 1 & 2 are correct
Neither 1 nor 2 is correct

15. Which among the following statements with reference to Rainbow is / are correct?1. One can see Rainbow during Rain showers as well as Snow showers2. The peak of the arc of Rainbow is generally located within 5 kilometres from earthChoose the correct option from the codes given below:
Only 1 is correct
Only 2 is correct
Both 1 & 2 are correct
Neither 1 nor 2 is correct

16. Speed of sound is:directly proportional to square root of Youngs modulus of mediumhigher in water when compared to air at same temperatureWhich of the above statements is/are correct?
1 Only
2 Only
Both 1 and 2
Neither 1 nor 2

17. Due to which of the following phenomenathe coloured glass appears white when crushed into fine powder?
Total Internal Reflection
Diffraction
Scattering
Refraction

18. The frequency range of Ultra High Frequency (UHF) is __?
3 to 10 Megahertz
3 to 30 Megahertz
300 to 3000 Megahertz
300 to 30000 Megahertz

19. Which of the following is/are a vector quantity?TemperatureWorkKinetic EnergyMomentumPowerSelect the correct option from codes given below:
2 and 4 Only
4 Only
234 and 5 Only
1234 and 5

20. The frequency range of Ultra High Frequency (UHF) is __?
3 to 10 Megahertz
3 to 30 Megahertz
300 to 3000 Megahertz
300 to 30000 Megahertz

21. Who among the following is credited to work for the unification of electricitymagnetism and optics field of Physics?
James Clerk Maxwell
Michael Faraday
Haris Christian Oersted
Isaac Newton

22. Electron microscope works on which of the following principles?
Optical interference
Wave Nature of electrons
Motion of charged particle in electromagnetic fields
Faradays law of Electromagnetic induction

23. Who among the following discovered X-rays?
Marie Curie
J.J Thomson
W.C Roentgen
James Chadwick

24. Who was the first scientist to discover Electrons?
Albert Einstein
Isaac Newton
J.C. Bose
J.J Thompson

25. Which of the following is the unit of Solid Angle?
radian
steradian
m2
?

26. What is the value of Triple point of water?
273.16 K
273.16° C
0° C
-273.16 K

27. Which of the following physical quantities has no units?
Reynold Number
Rydberg constant
Wave number
Hubble constant

28. Curie the a unit of which of the following?
Luminescence
Radioactivity
Pressure
Mass

29. The motion of an object under free fall is an example of which of the following?
uniform velocity
uniform acceleration
zero acceleration
non-uniform acceleration

30. The equation of motion v = u +at can be applied in which of the following cases?
simple harmonic motion
circular motion
when acceleration is constant
Both b and c

31. What is the maximum height that can be attained by a projectile?
equal to its maximum range
one half of its maximum range
one-fourth of its maximum range
twice of its maximum range

32. Which of the following is NOT correct about Vectors addition?
Vectors addition is associative
Vectors addition is commutative
Vectors of different natures can be added
None of the above

33. The inablity of a body to change its state of rest or motion is known as:
Force
Momentum
Displacement
Inertia

34. Angle of friction is _______:
equal to angle of repose
equal to twice the angle of repose
is greater than the angle of repose
is less than the angle of repose

35. The second law of motion gives us a measure of which of the following physical quantities?
Acceleration
Force
Power
Work done

36. What is the absolute unit of power in c.g.s system?
dyne
erg
watt
erg s-1

37. Which of the following is incorrect:
Gravitational force of attraction is independent of nature of intervening medium
Gravitational forces are central forces
Gravitational forces are non-conservative forces
All of the above

38. Which of the following is correct about acceleration due to gravity?
it increases with depth
it decreases with depth
it is independent of depth
None of the above

39. Choose the correct statement about weight:
It is a scalar quantity
Its value is independent of g
It is determined by a spring balance
None of the above

40. The acceleration due to gravity on any planet does not depend on which of the following?
Radius of the planet
Mass of the planet
Density of the planet
Mass of the object

41. What is the value of escape velocity for earth?
9.8 km s-2
1.6 km s-2
11.2 km s-2
7.92 km s-2

42. Which of the following condition will be true for a planet to have atmosphere?
velocity of molecules in its atmosphere is lesser than escape velocity
velocity of molecules in its atmosphere is greater than escape velocity
velocity of molecules in its atmosphere is twice the escape velocity
velocity of molecules in its atmosphere is equal to the escape velocity

43. An orbital velocity of a satellite does not depend on which of the following?
Radius of the planet
Mass of the planet
Radius of orbit
Mass of the satellite

44. What happens to the orbital velocity of a satellite when the radius of orbit is increased?
it decreases
it increases
it remains same
None of the above

45. Which of the following is incorrect about a satellite?
It is a freely falling body
] it does not require energy for its motion in orbit
it suffers an acceleration
it moves with constant speed

46. Which of the following is incorrect about the Inter atomic and Intermolecular Forces?
Both the forces are electrical in origin
Both the forces are active over short distances
General shape of force-distance graph is similar for both the forces
None of the above

47. What is the internal restoring force acting per unit area of cross section of the deformed body called?
Strain
Stress
Pressure
Surface Tension

48. Which of the following statements is correct?
Bulk stress occurs only in liquids
Longitudinal stress occurs only in solids
Both a and b
None of the above

49. Which of the following equation represents the Torricellis law?
(2gh)1/2
?3 gh
?2 gh
2gh

50. On which of the following principles is Hydraulic lift based?
Pascal law
Bernoullis principle
Stokes law
Torricellis law