Discussion
Home ‣ General Knowledge ‣ Physics Comments
- Question
Rear view mirror of car is convex or concave?
Options- A. Convex
- B. Concave
- C. Both A & B
- D. Can't be determined
- Correct Answer
- Convex
ExplanationThe side view mirror, in all the vehicles we use only convex mirror. This mirror makes the objects and small to show them in the mirror. That's why in all such mirrors, "Ojects in the mirror are closer than they appear."
- 1. The unit for measuring electric power is the
Options- A. Steridian
- B. Watts
- C. Watts
- D. Volts Discuss
- 2. Which measurement describes the pressure of a gas?
Options- A. 450 mm Hg
- B. 315 K
- C. 251 g/cub.cm
- D. None of the above Discuss
- 3. A voltaic cell converts chemical energy to
Options- A. Heat energy
- B. Electrical energy
- C. Mechanical energy
- D. Light energy Discuss
- 4. When an unbalanced force acts on an object
Options- A. causes change in motion of the object
- B. the speed & direction of the object will change
- C. causes the object to move
- D. All of the above Discuss
- 5. Force of impact is the force
Options- A. by the objects weight
- B. by the speed of the object
- C. when the objects meet
- D. None of the above Discuss
- 6. What is the escape velocity of the rocket in the earth is?
Options- A. 12.2 km/sec
- B. 10.2 km/sec
- C. 13.2 km/sec
- D. 11.2 km/sec Discuss
- 7. The flux commonly used in brazing is
Options- A. Ammonium chloride
- B. Borax
- C. Zinc chloride
- D. Resin plus alcohol Discuss
- 8. Gear finishing operation is called
Options- A. Burnishing
- B. Hobbing
- C. Shaping
- D. Milling Discuss
- 9. The mechanism of material removal in EDM process is
Options- A. Erosion and Cavitations
- B. Cavitations and Evaporation
- C. Melting and Evaporation
- D. Melting and Corrosion Discuss
- 10. Cryogenic Engines find applications in
Options- A. Frost - Free refrigerators
- B. Sub-marine propulsion
- C. Researches in superconductivity
- D. Rocket technology Discuss
Physics problems
Search Results
Correct Answer: Watts
Correct Answer: 450 mm Hg
Explanation:
450 mm Hg denotes the air pressure.
Correct Answer: Electrical energy
Correct Answer: All of the above
Explanation:
Unbalanced forces are the forces which causes change in motion of the object. It sets the object in motion and may cause the object to move. If the object is already in motion, it changes the speed and direction of the object.
Correct Answer: when the objects meet
Explanation:
Force of impact is the force when the objects meet. The speed of the object plays an important role in the generation of force of impact. The laws of physics determine that the force of impact increases with the square of the increase in speed.
Correct Answer: 11.2 km/sec
Correct Answer: Borax
Correct Answer: Burnishing
Explanation:
Gear finishing operation is called Burnishing.
Correct Answer: Melting and Evaporation
Explanation:
Electrical discharge machining (EDM), also known as spark machining, spark eroding, burning, die sinking, wire burning or wire erosion, is a manufacturing process whereby a desired shape is obtained by using electrical discharges.
Correct Answer: Rocket technology
Explanation:
Cryogenic Engines find applications in Rocket technology. A cryogenic rocket engine is a rocket engine that uses a cryogenic fuel or oxidizer, that is, its fuel or oxidizer are gases liquefied and stored at very low temperatures. Notably, these engines were one of the main factors of NASA's success in reaching the Moon by the Saturn V rocket.
Comments
There are no comments.More in General Knowledge:
Programming
Copyright ©CuriousTab. All rights reserved.