2. Give one word answer for these following question.
a. Which force act in the direction opposite to motion of any object.
b. which defects of vision can be corrected by using a concave lense.
c. Name an electronic device which can be detected very weak currents.
d. The wise judicious use of all natural resources known as-
e. The jelly like substance present in cell called.
Answers
Answer:
a) Friction is a force that opposes motion. When two objects are in contact, friction is acts in a direction opposite to the motion of the object. 3 types of friction: Sliding friction.
b) Summary
Vision problems such as myopia and hyperopia can be corrected with lenses that help focus light on the retina.
Myopia is corrected with a concave lens, while hyperopia is corrected with a convex lens.
c) The name of the device which can detect very weak flow of current is Galvanometer.
d) Wise and judicious use of resources is termed as conservation
e) Cytoplasm
Cytoplasm is the next part of the cell that contains 90 percent of water and organic and inorganic compounds; it is colloidal and viscous in nature, and jelly like fluid inside the cell.
Answer:
a.friction
b.myopia
c.led
d.resources
e.nucleus