Indian army has published the notification for SSC Tech 56 men and SSC Tech 27 women for the course commencing at OTA Chennai from April 2021
Which one of the following statements regarding motion is correct?
All the periodic motions are necessarily simple harmonic
All the simple harmonic motions are necessarily periodic.
There is no correlation between the simple harmonic motions and the periodicity of motion.
The relation between the simple harmonic motion and periodic motion depends upon the mass of the object undergoing the motion.
The radar used by police to check over-speeding vehicles works on the principle of
Raman effect
Induction effect
Doppler effect
Coulomb effect
Which one of the following statements with regard to Newton’s third law of motion is not correct?
Force never occurs singly in nature.
When the earth pulls a stone downwards due to gravity, the stone exerts a force on the earth.
There is a cause-effect relation implied in the third law
There is no cause-effect relation implied in the third law
Magnesium is used in
Fireworks to make a bright white light
Gemstones in jewelry
Examination of the alimentary canal of the patient
Purification of water
Which one of the following ingredients does not constitute paint?
Turpentine oil (thinner)
Polyhydroxy phenols (anti- skinning agent)
Thiourea (accelerator)
Titanium dioxide (pigment)
