[Quiz] Science Physics - Free Online Test - 6 (9th STD)

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TNPSC Free Online Test by TNPSC GURU.in
Subject	Science Physics
Exam Portions	Tamil Nadu Samacheer Kalvi 9th Std Term 1&2 – Science Physics Full
TNPSC Science Physics Test Series No: 6
No of Questions	10
Duration	10 Min
Difficulty Level	Easy
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1. Which one among the following is the most accurate one?
   
   1.  Digital Clock
   2.  Analog Watch
   3.  Pendulum Clock
   4.  Atomic Clock
   
   
2. The time period taken by a pendulum
   
   1.  directly proportional to the square of the Amplitude
   2.  inversely proportional to the amplitude
   3.  directly proportional to the amplitude
   4.  has no relation with its amplitude
   
   
3. Which one among the following is the vector quantity?
   
   1.  Displacement
   2.  Speed
   3.  Time
   4.  Distance
   
   
4. The device which is used to check the purity of milk is
   
   1.  Manometer
   2.  Puremeter
   3.  Barometer
   4.  Lactometer
   
   
5. A: Hydrometer is used to find the relative density of a liquid B: Hydrometer works on the Archimedes Principle
   
   1.  Only B is correct
   2.  Only A is correct
   3.  either A or B is correct
   4.  Both A and B are correct
   
   
6. The time period taken by a pendulum
   
   1.  directly proportional to the length of the pendulum
   2.  is inversely proportional to the square root of the length of the pendulum
   3.  is directly proportional to the square root of the length of the pendulum
   4.  inversely proportional to the length of the pendulum
   
   
7. The time period taken by a pendulum
   
   1.  inversely proportional to the acceleration due to gravity
   2.  directly proportional to the acceleration due to gravity
   3.  directly proportional to the square root of the acceleration due to gravity
   4.  inversely proportional to the square root of the acceleration due to gravity
   
   
8. Which of the following waves requires a medium to propagate?
   
   1.  longitudinal waves
   2.  transverse waves
   3.  Both A and B
   4.  electromagnetic waves
   
   
9. Which of the following is a kind of transverse waves?
   
   1.  light waves
   2.  sound waves
   3.  water waves
   4.  radio waves
   
   
10. Arrange the speed of sound in different medium in descending order
    
    1.  Solid - Liquid - Air
    2.  Air - Liquid - Solid
    3.  Liquid - Air - Solid
    4.  Air - Solid - Liquid
    
    
11. Select the frequency range for the infrasonic sound
    
    1.  > 20 Hz
    2.  < 20 Hz
    3.  > 20 KHz
    4.  < 20 KHz
    
    
12. When we burst crackers,
    
    1.  None of the below option is correct
    2.  we hear the sound and see the light at the same time
    3.  we hear the sound first and then we see the light
    4.  we see the light first and then we hear the sound
    
    
13. Speed of sound in air is
    
    1.  340 m/s
    2.  1440 m/s
    3.  3 x 10^8 m/s
    4.  3 x 10^ 8 km/s
    
    
14. Speed of sound in water is
    
    1.  340 m/s
    2.  3400 m/s
    3.  3 x 10^8 m/s
    4.  1440 m/s
    
    
15. Which of the following waves is used by the bats to detect the prey
    
    1.  Infrared waves
    2.  electro magnetic waves
    3.  Infrasonic waves
    4.  Ultrasonic waves
    
    

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