Physics MCQ

Physics GK Question Quiz 2

Que: Which quantity does not remain constant during projectile motion?

    (A). Force

    (B). Vertical component of velocity

    (C). Horizontal component of velocity

    (D). Acceleration

Correct Answer: Vertical component of velocity

Que: A periscope forms______________.

    (A).  An inverted image

    (B).  An erect image

    (C). A diminished image

    (D). An enlarged image

Correct Answer: an erect image

Que: In an electric fan, the energy change involved is________.

     (A). Chemical energy to light energy.

     (B).  Electrical energy to chemical energy.

     (C).  Electrical energy to mechanical energy.

     (D). Electrical energy to sound energy.

Correct Answer: electrical energy to mechanical energy

Que: Acceleration of a charged particle of charge q and mass m moving in a uniform electric field of strength E is___________.

   (A). q/mE

   (B). qE/m

   (C). m/qE

   (D). mqE

Correct Answer: qE/m

Que: Arrange the following planets in the decreasing order of natural satellites they possess:Uranus, Mars, Venus and Saturn.

    (A).Uranus, Saturn, Mars, Venus

    (B).  Venus, Mars, Uranus, Saturn

    (C). Mars, Saturn, Venus, Uranus

    (D). Saturn, Uranus, Mars, Venus

Correct Answer: Saturn,Uranus, Mars, Venus

Que: If two stones of masses 2 kg and 6 kg are dropped from a height, then ______ .

    (A).The stone of mass 2 kg will reach the ground first

    (B).  The stone of mass 6 kg will reach the ground first

    (C). Both stones will reach the ground at the same time

    (D). The final velocity of the stone of 6 kg mass is greater than that of the stone of 2 kg mass / 6

Correct Answer: both stones will reach the ground at the same time

Que: If a shell at rest explodes into two fragments of masses in the ratio 1:2, than the fragments ___________

    (A). Will remain at rest

    (B).  Will fly in opposite direction with same speed.

    (C). Will move in the opposite direction with speed of ratio 2:1

    (D). Will move in opposite direction with speed of the ratio 1:2

Correct Answer: will move in the opposite direction with speed of ratio 2:1

Que: The angle between the incident ray and plane mirror is 45°. Then the angle between the incident ray and the reflected ray is____________.

    (A). 0°

    (B).  45°

    (C). 60°

    (D). 90°

Correct Answer: 90°

Que: The fundamental frequency of a closed organ pipe is equal to the first overtone of an open pipe. If the length of the open pipe is 60 cm, what is the length of the closed pipe?

    (A). 30 cm

    (B). 120 cm

    (C). 20 cm

    (D). 15 cm

Correct Answer: 15cm

Que: Split ring device is used in DC generators to___________.

    (A). 1. Convert ac armature current into dc / ac

    (B).  Reduce eddy current loss

    (C). Collect current without any sparkings

    (D). Collect voltage

Correct Answer: convert ac armature current into dc / ac

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