An iron ball weighing 10 kg on the earth will weigh in space zero in space body experience weightlessness as g = 0.

Correct Option: D

An iron ball weighing 10 kg on the earth will weigh in space zero in space body experience weightlessness as g = 0.

When a body is taken from the earth to the moon its weight decreases as the value of gravity on the surface of the moon is 1/6th as that of the earth's surface.

Correct Option: B

When a body is taken from the earth to the moon its weight decreases as the value of gravity on the surface of the moon is 1/6th as that of the earth's surface.

The weight of any body is maximum at poles.
Weight = mass x acceleration due to gravity(g)
g_maximum at poles and
g_minimum at equator hence weight is maximum at poles and minimum at equator.

Correct Option: B

The weight of any body is maximum at poles.
Weight = mass x acceleration due to gravity(g)
g_maximum at poles and
g_minimum at equator hence weight is maximum at poles and minimum at equator.

1 micron = 10^-6 m
= 1 nanometer = 10^-9 m
= 1 angstrom = 10^-10 m
= 1 fermi = 10^-15 m

Correct Option: D

1 micron = 10^-6 m
= 1 nanometer = 10^-9 m
= 1 angstrom = 10^-10 m
= 1 fermi = 10^-15 m

The instrument Sphygmomanometer measures the blood pressure.

Correct Option: C

The instrument Sphygmomanometer measures the blood pressure.