Physics General Knowledge MCQs Quiz for Competitive Exams with Answers Set 10

Physics MCQs Quiz for Competitive Exams.This post contains Physics Objective Questions and Answers for NTS, PPSC, CSS, FPSC, PMS, OTS, PTS Tests and Interviews. These Objective Physics Questions and Answers are to prepare online competitive exams. MCQs are taken from Caravan Comprehensive GK Book.

1. A silver spoon and a book are both at room temperature. The spoon feels colder to the touch because_______.

(a) Of an illusory effect
(b) Silver is an almost pure material
(c) Silver is a very good heat conductor
(d) it is made of a denser material

2. A liquid rises in a syringe when its piston is pulled up because:-

(a) Of the property of surface tension
(b) 0f capillary action
(c) Of the action of atmospheric pressure
(d) There is a force of cohesion between the liquid molecules and the glass syringe

3. A small weight is put on the pressure cooker. It increases the pressure of the steam because:-

(a) The weight is proportionate to the steam required
(b) Area of contact is small
(c) The weight stops the steam from escaping
(d) Of Bernoulli’s principle

4. When an electric bulb breaks, there is a mild sang due to ________.

(a) The chemical reaction between the enclosed gases
(b) The compressed gases rushing out suddenly
(c) The air rushing in to fill the evacuated space
(d) None of the above

5. Kinetic energy depends ________.

(a) On the mass of the moving body
(b) The velocity or speed of the moving body
(c) The pressure of the moving body
(d) Both mass and velocity of the moving body

6. The nucleus of an atom consists of ______.

(a) Protons + Electrons
(b) Only proton
(c) Proton + Neutron + Electron
(d) Protons and neutrons

7. Four identical kettles with the same amount of water, have bases made of different metals of the same thickness. If these are placed on identical flames water will boil first in the kettle with a base made of ________.

(a) Brass
(b) Copper
(c) Aluminium
(d) Steel

8. Sound travels with a different speed in different media. In what order does the velocity of sound increase in these media?

(a) Water, iron and air
(b) Iron, air and water
(c) Air, water and iron
(d) Iron, water and air

9. In electric fittings. the wires are earthed because _______.

(a) In case of a short circuit, current passes to the earth
(b) It avoids leakage of electricity
(c) It completes the electric circuit
(d) It reduces fluctuation

10. Which of the following metals is used in aircraft?

(a) Chromium
(b) Titanium
(c) Palladium
(d) None of these

11. Which metal is commonly used as an electromagnet?

(a) Copper
(b) Iron
(c) Nickel
(d) Cobalt

12. Which of the following does not admit any division?

(a) Atom
(b) Molecules
(c) Compound
(d) All

13. The dynamo converts______.

(a) Mechanical energy into electrical energy
(b) Electrical energy into mechanical energy
(c) Mechanical energy into magnetic energy
(d) None of these

14. A red light is used in a traffic signal because______.

(a) It has the longest wavelength and can be easily noticed from a long distance
(b) It is beautiful
(c) It is visible to people even with bad eyesight
(d) None of these

15. Metals are good conductors of electricity because_______.

(a) They contain free electrons
(b) The atoms are lightly packed
(c) They have the high melting point
(d) All of the above

Physics General Knowledge MCQs Quiz for Competitive Exams with Answers Set 11

Physics General Knowledge MCQs Quiz for Competitive Exams with Answers Set 12