Physics - MOST IMPORTANT CG PCS Previous Year Questions
Practice real questions from previous year exams of CG PCS.
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.
What is the minimum distance of clear vision for normal eye?
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?
The defect of myopic eye is cured:
Image formed on the retina of the human eye is:
Which among the following pairs is an example of paramagnetic and ferromagnetic substances respectively?
The unit of electric current is?
What is the unit of atmospheric pressure?
The dimension of dielectric constant is-
Which instrument is used to measure humidity?
A pyrometer is used to measure -
The instrument, used for measuring angular distances in vertical plane (elevation) and the horizontal plane (azimuth), is :
SONAR is mostly used by:
Spherical shape of raindrop is due to:
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
In which medium the speed of sound is maximum at temperature of around 20°C?
Cryogenic temperature is that temperature which is:
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.
Which one of the following is harmful ultraviolet ray?
The best electrical conductor among the following is