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
If the distance between two objects is increased by two times, the gravitational force between them will
remains same
increase by two times
decrease by two times
decrease by four times
Which one of the following statements about the properties of neutrons is not correct?
Neutron mass is almost equal to proton mass.
Neutrons possess zero charges.
Neutrons are located inside the atomic nuclei.
Neutrons revolve around the atomic nuclei.
Which one of the following statements with regard to the ultraviolet light is not correct?
It Is an electromagnetic wave.
It can travel through a vacuum.
It is a longitudinal wave.
Its wavelength is shorter/smaller than that of visible light.
If the speed of light in air is represented by c and the speed in a medium is v, then the refractive index of the medium can be calculated using the formula
v/c
c/v
c/2v
(c-v)/c
Under the Kingdom Plantae, which of the following individuals are predominantly aquatic?
Bryophytes
Algae
Pteridophyte
Gymnosperms
