General Physics 1000+ MCQ with answer for RRB JE

1. Some persons are not able to see distant objects clearly because the image of the object is focused in front of the retina. This defect is known as
A. short sight
B. long sight
C. astigmatism
D. presbyopia
Answer : A

2. A ruse wire is characterised by
A. high resistance and high melting point
B. high resistance and low melting point
C. low resistance and high melting point
D. low resistance and low melting point
Answer : D

3. The aneroid barometer uses
A. mercury
B. distilled water
C. alcohol
D. does not use any liquid
Answer : D

4. A wire conveying a current deflects a pivoted magnetic needle. This was discovered by
A. Marconi
B. Oersted
C. Faraday
D. Ohm
Answer : B

5. A car parked in the sun with its windows closed gets terribly hot inside. This is due to
A. the heat emitted by the engine
B. the greenhouse effect
C. the good conducting power of the metal body
D. the double layered wind shield
Answer : B

6. A sensitive instrument susceptible to magnetic infiuence can be protected from external magnetic field by
A. enclosing it in a thick walled iron box
B. wrapping it with an insulator
C. by placing it inside a glass case
D. by surrounding it with fine copper gauze
Answer : A

7. The loudness of a sound is determined by
A. Frequency
B. Amplitude
C. Speed
D. Wavelength
Answer : B

8. The world's first artificial satellite Sputnik I was launched by Russia in
A. 1985
B. 1957
C. 1959
D. 1960
Answer : B

9. In a microphone
A. sound energy is converted into electrical energy
B. electrical energy is converted into sound energy
C. sound energy is converted into mechanical energy
D. mechanical energy is converted into sound energy
Answer : A

10. The colour or an opaque object is due to the colour it
A. absorbs
B. refracts
C. reflects
D. scatters
Answer : C

11. The distance between two bodies is halved. Now the force of attraction between them will be
A. half
B. one fourth
C. four times
D. two times
Answer : C

12. Heat is transmitted from one end of a metal rod to its other end by the method of
A. conduction
B. convection
C. radiation
D. sublimation
Answer : A

13. The evaporation rate depends on
A. the nature of the liquid
B. area of the exposed surface of the liquid
C. temperature of air and of the liquid
D. All the above
Answer : D

14. The scientist who first sent electromagnetic waves to distant places was
A. James Clerk Maxwell
B. Heinrich Hertz
C. Thomas Alva Edison
D. Baird
Answer : C

15. Railway tracks are banked on curves so that
A. the necessary centrifugal force may be obtained from the horizontal component of the weight of the train
B. the frictional force between the track and the wheels is avoided
C. the necessary centripetal force may be derived from the horizontal component of the weight of the train
D. None of these
Answer : C

16. A bullet is fired at a certain angle with the horizontal. Its path will be
A. elliptical
B. a straight line
C. a parabola
D. a vertical line
Answer : C

17. A body has fallen from a height. Just before touching the pound it has
A. lost all its potential energy and gained an equivalent amount of kinetic energy
B. gained potential energy and lost kinetic energy
C. gained kinetic energy as well as potential energy
D. lost kinetic energy as well as potential energy
Answer : A

18. A pressure gauge for fluids is called
A. a hydrometer
B. a manometer
C. a lactometer
D. an anemometer
Answer : B

19. The frequency of an ultrasonic wave is
A. the same as that of an audible sound
B. above the audible range
C. below the audible range
D. None of the above
Answer : B

20. Atoms which have the same atomic number but different mass numbers are called
A. isobars
B. isomers
C. isotones
D. isotopes
Answer : D

21. If a band is played on the moon the sound will
A. reverberate
B. be heard by us faintly
C. be heard upto 10 km from it
D. not be heard at any distance at all from it
Answer : D

22. The direction of heat flow between two objects depends on
A. their heat contents
B. their masses
C. their temperatures
D. whether they are in solid, liquid or gaseous state
Answer : C

23. The brightest star visible to the naked eye is
A. Sirius
B. Vega
C. Rigel
D. Proxima Centauri
Answer : A

24. Less dew is formed on cloudy nights because
A. there is no moisture in the atmosphere
B. clouds absorb the falling dew
C. objects emit radiant energy very fast on such nights
D. objects lose less radiant energy
Answer : D

25. Tea pots are highly polished
A. so that they may reflect thermal radiation from outside and minimise such radiation from them
B. so that they may absorb all radiation from outside
C. to make them attractive to look at
D. because they take high polish
Answer : A

26. A stationary elevated object has
A. kinetic energy
B. potential energy
C. momentum
D. both potential and kinetic energy
Answer : B

27. Dioptre is the unit of power of
A. convex mirrors
B. concave mirrors
C. concave lenses
D. lenses irrespective of types
Answer : D

28. When light passes from air to glass, its velocity in glass
A. increases
B. decreases
C. remains unchanged
D. first decreases then increases
Answer : B

29. The line on earth's surface passing through the places having zero dip is called the magnetic equator. This passes through
A. Thumba
B. Delhi
C. Mumbai
D. Sriharikota
Answer : A

30. The planet that moves fastest around the sun is
A. Mars
B. Venus
C. Earth
D. Mercury
Answer : D

31. Primary colours are
A. colours of the rainbow
B. colours in the spectrum of white light
C. colours which cannot be produced by mixing other colours
D. colours found in nature
Answer : C

32. Meteors
A. look like falling stars
B. are really pieces of rock or metal
C. burn up as they shoot through the air
D. All the above
Answer : D

33. Commonly used safety fuse wire is made of
A. Tin
B. Lead
C. Nickel
D. An alloy of tin and lead
Answer : D

34. Rays from the headlight of a motor car are rendered parallel by suitably using
A. a convex mirror behind it
B. a concave lens behind it
C. a concave mirror in front of it
D. a concave mirror behind it
Answer : D

35. The heating element often used in an electric iron is
A. copper
B. tungsten
C. mica
D. nichrome
Answer : D

36. The period of oscillation of a simple pendulum depends upon
A. the mass of its bob
B. the material of the bob
C. the amplitude of vibration
D. acceleration due to the gravity at the site of experiment
Answer : D

37. A thermostat is a device used
A. for automatically maintaining a steady temperature
B. for measuring electricity
C. to reduce the voltage of electricity
D. for producing heat
Answer : A

38. Which of the following wires of same dimensions offers least resistance to the ,flow of current?
A. copper
B. aluminium
C. silver
D. nichrome
Answer : C

39. A heavenly body similar in nature to the sun intensely hot glowing mass that produces its energy by thermonuclear reactions is
A. a planet
B. a meteor
C. a star
D. a comet
Answer : C

40. In compact porous soil, the rising of the water is due to
A. capillarity
B. cohesion
C. adhesion
D. viscosity
Answer : A

41. The evaporation rate depends on
A. the nature of the liquid
B. area of the exposed surface of the liquid
C. temperature of air and of the liquid
D. All the above
Answer : D

42. The colour or an opaque object is due to the colour it
A. absorbs
B. refracts
C. reflects
D. scatters
Answer : C

43. A timer in a race is at the finish line. He should start his stop watch
A. as soon as he hears the report of the gun
B. the moment he sees the flash
C. either (a) or (b) since that makes no difference
D. None of the above
Answer : B

44. The period of a geostationary (synchronous) satellite orbiting the earth over the equator la
A. 16 hours
B. 12 hours
C. 20 hours
D. 24 hours
Answer : D

45. Water kept in an earthen pot is less cool on rainy days than in summer because during the rainy days
A. the pores in the pot are closed
B. rain water stops oozing out from the pores
C. the water that oozes out does not evaporate quickly because of the large percentage of moisture in the air
D. surface of the pot becomes damp
Answer : C

46. For an electron orbiting in a hydrogen atom, the necessary centripetal force keeping it in orbit is provided by
A. the electrical attraction between the negatively charged electron and the positively charged porton
B. the high speed of the electron
C. the low speed of the electron
D. gravity
Answer : A

47. One finds it more difficult to walk on ice than on a concrete road because
A. there is more friction on ice than on concrete surface
B. ice is soft and spongy while concrete is hard
C. the friction between ice and the feet is less than that between the concrete and the feet
D. None of them
Answer : C

48. Red Light is used as a dancer signal because
A. it is pleasing to the eye
B. it has a traditional colour
C. it is easily distinguishable
D. it is most sensitive to the human eye
Answer : D

49. Credit for starting Space Science Research in India goes to
A. HJ Bhabha
B. SS Bhatnagar
C. V Sarabhai
D. CV Raman
Answer : C

50. The temperature of a large bucket-full of hot water (a few degrees below boiling point) is lower than a beaker full of boiling water. But
A. the hot water contains a much larger quantity of internal energy than the boiling water
B. the boiling water contains more quantity of internal energy than the warm water
C. both of them have got the same amount of internal energy.
D. nothing can be said definitely with the data given
Answer : A