Physics - Questions and Answers, General Study (GK)

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421.

A geostationary satellite should be launched such that it moves from

(a)South to North in the polar plane

(b)North to south in the polar plane

(c)West to east in the equatorial plane

(d)East to west in the equatorial plane

Comment

Answer is: C

422.

A satellite revolves around the earth in elliptic Orbit, its speed is

(a)Greatest when it is farthest from the Earth

(b)Greatest when it is closest to the earth

(c)Same at all points on the orbit

(d)None of the above

Comment

Answer is: C

423.

The plane of the orbit of an Earth satellite

(a)Does not pass through the centre of the earth

(b)Passes through the centre of the earth

(c)May or may or may not pass through the centre of the earth

(d)Oscillates about the centre of earth

Comment

Answer is: C

424.

A satellite revolves around the earth in circular orbit. If gravitational pull suddenly disappear, then it

(a)Falls down with increasing speed

(b)Continues to move with the same speed and along the same path

(c)Moves with the same speed tangential to the original Orbit

(d)Comes to rest after moving A certain distance along the original path

Comment

Answer is: C

425.

The time period of an artificial satellite in a circular orbit is independent of

(a)Radius of the orbit

(b)The mass of the satellite

(c)Mass of the earth and radius of the earth

(d)None of the above

Comment

Answer is: B

426.

A girl is swinging on a swing in the sitting position. How will the period of Swing be affected if she stands up?

(a)The period will now be sorter

(b)The period will nowbe longer

(c)The period will remain unchanged

(d)None of the above

Comment

Answer is: A

427.

A particle is executing in SHM. Then the the graph of acceleration as a function of the displacement is

(a)Straight line

(b)Elipse

(c)Hypeebola

(d)Circle

Comment

Answer is: B

428.

When a particle executing SHM passes through the mean position it has

(a)Maximum kinetic energy and minimum potential energy

(b)Maximum kinetic energy and maximum potential energy

(c)Minimum kinetic energy and minimum potential energy

(d)Minimum kinetic energy and maximum potential energy

Comment

Answer is: A

429.

The total energy of a particle vibrating in SHM is proportional to the square of its

(a)Acceleration

(b)Velocity

(c)Amplitude

(d)None of the above

Comment

Answer is: C

430.

In order to double the period of simple pendulum

(a)Its length should be double

(b)Its length should be quadrupled

(c)The mass of its bob Should be quadrupled

(d)The mass of its bob should be doubled

Comment

Answer is: D

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Physics - Questions and AnswersPage 43

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