Online GK Series

This site is dedicated to the aspirants of competitive exams SSC, UPSC, Railways, Postal Assistants, Bank, GATE and NET

3,00,000 Jobs Waiting For You

CSAT Prelims General Awareness - Physics Multiple Choice Questions and Answers | GKSERIES

Questions
1 A hunter aims his gun at a point between the eyebrows of a monkey sitting on a branch of a tree. Just as he fires, the monkey jumps down. The bullet will:
A hit the monkey at the point aimed
B hit the monkey above the point aimed
C hit the monkey below at the point aimed
D miss the monkey altogether

Answer: Option [A]
2 An oil tanker partially filled with oil moves forward on a level road with uniform acceleration. The free surface of oil then:
A remains horizontal
B assumes a parabolic curve
C is inclined to the horizontal with smaller depth at the rear end
D is inclined to the horizontal with larger depth at the rear end

Answer: Option [D]
3 A spherical body moves with a uniform angular velocity (w) around a circular path of radius r. Which one of the following statements are correct ?
A The body has no acceleration
B The body has a radial acceleration ω2r directed toward centre of path
C The body has a radial acceleration 2/5ω2r directed away from the centre of the path
D The body has an acceleration ω2 tangential to its path

Answer: Option [B]
4 Four wires of same material and of dimensions as under are stretched by a load of same magnitude separately. Which one of them will be elongated maximum ?
A Wire of 1m length and 2 mm diameter
B Wire of 2m length and 2mm diameter
C Wire of 3m length and 1.5mm diameter
D Wire of 1m length and 1mm diameter

Answer: Option [C]
5 Ball bearings are used in bicycles, cars, etc., because
A the effective area of contact between the wheel and axle is reduced
B the effective area of contact between the wheel and axle is increased
C the actual area contact between the wheel and axle is increased
D none of the above statements is correct

Answer: Option [A]
6 Cloudy nights are warmer compared to clear cloudless nights, because clouds:
A reflect back the heat given off by earth
B produce heat and radiate it towards earth
C prevent clod waves from the sky from descending on earth
D absorb heat from the atmosphere and send it towards earth

Answer: Option [A]
7 When a CD (compact disc used in audio and video systems) is seen in sunlight, rainbow like colours are seen. This can be explained on the basis of the phenomenon of:
A reflection and transmission
B reflection and diffraction
C diffraction and transmission
D refraction, diffraction and transmission

Answer: Option [D]
8 Which one of the following statements is not correct ?
A The velocity of sound in air is independent of pressure
B The velocity of sound in air decreases as the humidity increases
C The velocity of sound in air increases with the increase of temperature
D The velocity of sound in air not affected by the change in amplitude and frequency

Answer: Option [B]
9 A fuse is used in mains electric supply as a safety device. Which one of the following statements about the fuse is correct ?
A It must have a low melting point
B It is made mainly from silver alloys
C It must have very high resistance
D It is connected in parallel with the main switch

Answer: Option [A]
10 Electrically charged particles from space traveling at speeds of several hundred km/sec can severally harm living beings if they reach the surface of the earth. What prevents them from reaching the surface of the Earth ?
A The Earth’s magnetic field diverts them towards its poles
B Ozone layer around the Earth reflects them back to outer space
C Moisture in the upper layers of atmosphere prevents them from reaching the surface of the Earth
D None of the statements (A), (B) and (C) given above is correct

Answer: Option [A]

Chapters

Read More Physics Questions

Important EBooks for Competitive Exams

VIEW ALL