KCET 2023 | Gravitation Question 1 | Physics

Electrical as well as gravitational affects can be thought to be caused by fields. Which of the following is true for an electrical or gravitational field?

Gravitational or electric field does not exist in the space around an object.

Fields are useful for understanding forces actin through a distance.

There is no way to verify the existence of a force field since it is just a concept.

The field concept is often used to describe contact forces.

KCET 2021

MCQ (Single Correct Answer)

-0

Two bodies of masses $$8 \mathrm{~kg}$$ are placed at the vertices $$A$$ and $$B$$ of an equilateral triangle $$A B C$$. A third body of mass $$2 \mathrm{~kg}$$ is placed at the centroid $$G$$ of the triangle. If $$A G=B G=C G=1 \mathrm{~m}$$, where should a fourth body of mass $$4 \mathrm{~kg}$$ be placed, so that the resultant force on the $$2 \mathrm{~kg}$$ body is zero?

At $$C$$

At a point $$P$$ on the line $$C G$$ such that $$P G=\frac{1}{\sqrt{2}} \mathrm{~m}$$

At a point $$P$$ on the line $$C G$$ such that $$P G=0.5 \mathrm{~m}$$

At a point $$P$$ on the line $$C G$$ such that $$P G=2 \mathrm{~m}$$

KCET 2020

MCQ (Single Correct Answer)

-0

The value of acceleration due to gravity at a height of $$10 \mathrm{~km}$$ from the surface of earth is $$x$$. At what depth inside the earth is the value of the acceleration due to gravity has the same value $$x$$ ?

5 km

20 km

10 km

15 km

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