PHYSICS CH 1 Measurement — Science STD 9 — Question

Aquaponics is a technique of growing plants with their root supplied with moisture present in the air.

State whether true or false. If false, correct the statement.

When the weather is hot, water evaporates lesser which is due to opening of stomata.

• True

• False

State whether true or false. If false, correct the statement.

Vitamin C is a water soluble vitamin

• True

• False

The symbol for the units derived from the names of scientists are written in capital letter

Pole star is not visible from the southern hemisphere.

State whether true or false. If false, correct the statement.

Acceleration can get negative value also.

• True

• false

The small to and fro motion is called vibration.

The angle of incidence at which the angle of refraction is Q£ is called the critical angle.

The basic constituent of the universe is the luminous matter.

The magnetic field lines due to a straight wire carrying current are parallel.