Physics - MOST IMPORTANT CG PCS Previous Year Questions
Practice real questions from previous year exams of CG PCS.
📘 Sound📚 Types of Sound- Infrasonic, Audible, Ultrasonic
Q1
What is/are not true among the following? (i) Audible range of sound for human beings is approximately 20 Hz to 10 kHz. (ii) Sound waves with frequencies higher than 10 kHz are called ultrasound. (iii) In earthquake, ultrasounds are produced before main shock waves.
🎯 CG PCS (Pre) 2022
📘 Human Eye📚 Working of the Human Eye
Q2
What is the minimum distance of clear vision for normal eye?
🎯 CG PCS (Pre) 1st G.S., 2013
📘 Light and Optics📚 Images formed by Convex Mirror
Q3
What will be the nature of image formed by a convex mirror when the position of object is between infinity and pole P of the mirror?
🎯 CG PCS (Pre) 2020
📘 Human Eye📚 Defects in Eyes- Myopia
Q4
The defect of myopic eye is cured:
🎯 CG PCS (Pre) 2016-17
📘 Human Eye📚 Working of the Human Eye
Q5
Image formed on the retina of the human eye is:
🎯 CG PCS (Pre) 2016
📘 Magnetism📚 Magnetic Materials- Diamagnetic, Paramagnetic, Ferromagnetic materials
Q6
Which among the following pairs is an example of paramagnetic and ferromagnetic substances respectively?
🎯 CG PCS (Pre) 2024
📘 Current Electricity📚 Electric Current
Q7
The unit of electric current is?
🎯 CG PCS (Pre) G.S. 2004-05
📘 Fluid Mechanics📚 Pressure and its applications
Q8
What is the unit of atmospheric pressure?
🎯 CG PCS (Pre) G.S. 2008
📘 Units and Dimensions📚 Dimensional Formula of Physical Quantities
Q9
The dimension of dielectric constant is-
🎯 CG PCS (Pre) 2024
📘 Instruments to Measure things📚 List of Instruments to Measure Physical Quantities
Q10
Which instrument is used to measure humidity?
🎯 CG PCS (Pre) G.S. 2008
📘 Instruments to Measure things📚 List of Instruments to Measure Physical Quantities
Q11
A pyrometer is used to measure -
🎯 CG PCS (Pre) G.S. 2010-11
📘 Instruments to Measure things📚 List of Instruments to Measure Physical Quantities
Q12
The instrument, used for measuring angular distances in vertical plane (elevation) and the horizontal plane (azimuth), is :
🎯 CG PCS (Pre) 2020
📘 Sound📚 SONAR and its Use
Q13
SONAR is mostly used by:
🎯 CG PCS (Pre) G.S. 2010
📘 Fluid Mechanics📚 Surface Tension and its applications
Q14
Spherical shape of raindrop is due to:
🎯 CG PCS (Pre) G.S. 2003
📘 Sound📚 Speed of Sound and Factor affecting it
Q15
Which of the following statement is/are true in relation to sound waves?
Statement I : Speed of sound decreases when we go from solid to gaseous state
Statement II : In any medium as we decrease the temperature, the speed of sound increases
Statement III : Speed of sound is less in aluminium medium than in glass medium
🎯 CG PCS (Pre.) 2020
📘 Sound📚 Speed of Sound in Different Media
Q16
In which medium the speed of sound is maximum at temperature of around 20°C?
🎯 CG PCS (Pre) G.S. 2004-05
📘 Thermal Properties of Matter📚 Misc
Q17
Cryogenic temperature is that temperature which is:
🎯 CG PCS (Pre) G.S. 2003
📘 Thermal Properties of Matter📚 Misc
Q18
What are true about plasma state?
(i) Particles in this state are in ionic state.
(ii) Light in the LED bulb is related to plasma state.
(iii) Sunlight is also an example of plasma state.
🎯 CG PCS (Pre) 2022
📘 Wave📚 Electromagnetic- Ultraviolet waves
Q19
Which one of the following is harmful ultraviolet ray?
🎯 CG PCS (Pre.) Ist, 2012
📘 Current Electricity📚 Conductors, Semiconductors and Insulators
Q20
The best electrical conductor among the following is
🎯 CG PCS (Pre) G.S. 2010-11