Physics Questions and Answers

Practice Mode
Showing 10 of 77 questions
Q21
Magnetism at the centre of a bar magnet is
  • A minimum
  • B maximum
  • C zero
  • D minimum or maximum
Answer: Option C
Q22
It is more difficult to walk on a sandy road than on a concrete road because
  • A sand is soft and concreter is hard
  • B the friction between sand and feet is less than that between concrete and feet
  • C the friction between sand and feet is more than that between concrete and feet
  • D the sand is grainy but concrete is smooth
Answer: Option B
Q23
Find the maximum velocity for the overturn of a car moving on a circular track of radius 100 m. The co-efficient of friction between the road and tyre is 0.2
  • A 0.14 m/s
  • B 140 m/s
  • C 1.4 km/s
  • D 14 m/s
Answer: Option D
Q24
Of the following properties of a wave, the one that is independent of the other is its
  • A amplitude
  • B velocity
  • C wavelength
  • D frequency
Answer: Option A
Q25
Flux is the unit of
  • A intensity of illumination
  • B luminous efficiency
  • C luminous flux
  • D luminous intensity
Answer: Option A
Q26
 On a rainy day, small oil films on water show brilliant colours. This is due to
  • A dispersion
  • B interference
  • C diffraction
  • D polarization
Answer: Option B
Q27
Point A is at a lower electrical potential than point B. An electron between them on the line joining them will
  • A move towards A
  • B move towards B
  • C move at right angles to the line joining A and B
  • D remain at rest
Answer: Option B
Q28
 Materials for rain-proof coats and tents owe their water-proof properties to
  • A surface tension
  • B viscosity
  • C specific gravity
  • D elasticity
Answer: Option A
Q29
RADAR is used for
  • A locating submerged submarines
  • B receiving a signals in a radio receiver
  • C locating geostationary satellites
  • D detecting and locating the position of objects such as aeroplanes
Answer: Option D
Q30
Sound of frequency below 20 Hz is called
  • A audio sounds
  • B infrasonic
  • C ultrasonic
  • D supersonics
Answer: Option B

📚 More from General Knowledge

← All Topics 🎯 Practice ⏱️ Take Test 🔍 Search
General Knowledge
Back to General Knowledge
Other Subjects
Questions and Answers for Competitive Exams Various Entrance Test