Sail E0 Webinar

General Knowledge > General Science

PHYSICS MCQs

Total Questions : 3767 | Page 70 of 377 pages
Question 691. Bats can sense obstacles because they produce
  1.    Supersonic sound waves
  2.    Ultrasonic sound waves
  3.    Infrasonic sound waves
  4.    Micro sound waves
 Discuss Question
Answer: Option B. -> Ultrasonic sound waves
Question 692. A wavelength of 0.3 m is produced in air and it travels at a speed of 300 m/s. Then it will be an
  1.    Audible wave
  2.    Infrasonic wave
  3.    Ultrasonic wave
  4.    Microwave
 Discuss Question
Answer: Option A. -> Audible wave
Question 693. Which term is not associated with sound wave?
  1.    Hertz
  2.    Decibel
  3.    Candela
  4.    Mach
 Discuss Question
Answer: Option C. -> Candela
Question 694. Velocity of sound in air does not depend on
  1.    Density of air
  2.    Temperature of air
  3.    Pressure of air
  4.    Humidity of air
 Discuss Question
Answer: Option C. -> Pressure of air
Question 695. Speed of sound in air is unaffected by change in
  1.    Pressure
  2.    Humidity
  3.    Temperature
  4.    Volume
 Discuss Question
Answer: Option A. -> Pressure
Question 696. RADAR is used for
  1.    Detecting and locating the position of objects such as Aeroplanes
  2.    Locating submerged submarines
  3.    Locating geostationary satellites
  4.    Receiving a signals in a radio receiver
 Discuss Question
Answer: Option A. -> Detecting and locating the position of objects such as Aeroplanes
Question 697. What is the minimum distance (in metres) required to hear an echo?
  1.    10
  2.    13
  3.    17
  4.    21
 Discuss Question
Answer: Option C. -> 17
Question 698. Sound travels fastest in
  1.    Vacuum
  2.    Air
  3.    Glass
  4.    Water
 Discuss Question
Answer: Option C. -> Glass
Question 699. Which among the following determines the pitch of a sound?
  1.    Amplitude
  2.    Frequency
  3.    Loudness
  4.    Wavelength
 Discuss Question
Answer: Option B. -> Frequency
Question 700. In a refrigerator, the cooling system should always be
  1.    At the top
  2.    At the bottom
  3.    At the middle
  4.    Can be anywhere
 Discuss Question
Answer: Option B. -> At the bottom

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI
Tabulation - Test Paper 2 Data Interpretation Reasoning & DI
Test Paper 1 Direction Sense Test Reasoning & DI
ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0
GFM Combined 1 Free Revision Test SAIL JO E-0