Kerala (English Medium) Std 9 Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
The fixed path in which the satellite moves round the planet is called

(A) Circle	(B) Orbit
(C) Shell	(D) radius

Question-2
For a freely falling body (falling vertically down wards) 'g' is

(A) Negative	(B) Positive
(C) Zero	(D) None of these

Question-3
Which one of the following is attracted towards the earth with greater force ?

(A) Empty bottle	(B) Bottle containing full of water
(C) Bottle containing half filled water	(D) None

Question-4
The minimum velocity that an object should possess to escape from the gravitational field of earth is called

(A) Orbital velocity	(B) Escape velocity
(C) Uniform velocity	(D) Retardation

Question-5
The mass of a body is measured to be 12 kg on The Earth. If it is taken to moon, the mass will be

(A) 72 kg	(B) 2 kg
(C) 12 kg	(D) 24 kg

Question-6
If the distance between two objects is halved ,then the gravitational force of attraction is

(A) Doubled	(B) Halved
(C) 4 times	(D) Becomes(1/4)^th

Question-7
If height from the ground increases, the value of g ?

(A) Increases	(B) Decreases
(C) Doubles	(D) No change

Question-8
The weight of a body on the moon is one - sixth of its weight on the earth.How will the mass of the body vary ?

(A) Becomes 1/6 th	(B) Remains the same
(C) Becomes 6 times	(D) Becomes 1/8 th

Question-9 The potential energy of a satellite of mass m and revolving at a height R above the surface of earth where R_e = radius of earth, is

(A) -mgR_e	(B)
(C)	(D)

Question-10
The weight of a body of mass 5 kg is

(A) 69.0 N	(B) 79.0 N
(C) 49.0 N	(D) 39.0 N

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Std 9

Kerala (English Medium)

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Magnetism and Electricity
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