Which conservation principle is applicable in the case of the motion of a rocket?

LohaHridoy
  1. Conservation of mass
  2. Conservation of charge
  3. Conservation of momentum
  4. Conservation of energy

0 like 0 dislike
1 views
Share with your friends

1 Answers

AhmedNazir

Call

Answer: Option 3

Rocket works on the principle of conservation of momentum. Rocket ejaculates gases in backward direction which creates momentum of the gases backwards and thus by conservation of momentum, the rocket gets a momentum in the forward direction making it to move forward.

0 like 0 dislike
1 views
Talk Doctor Online in Bissoy App
What is the gap period between first no-confidence motion and second no-confidence motion-?

Answer: Option 3 No confidence motion can be introduced only in Lok Sabha by opposition against the government. Speaker of Lok Sabha can accept no confidence motion only when it...

1 Answers 1 views
What is the printout of the following switch statement char ch = 'a'; switch (ch){ case 'a': case 'A': System.out.print(ch); break; case 'b': case 'B': System.out.print(ch); break; case 'c': case 'C': System.out.print(ch); break; case 'd': case 'D': System.out.print(ch); }?

Answer: Option 3 Let'

1 Answers 1 views
Principle of superposition is applicable when?

Answer: Option 1 Let'

1 Answers 1 views
What will be the following code's output if choice = 'R' switch(choice) { case 'R' : printf("RED"); case 'W' : printf("WHITE"); case 'B' : printf("BLUE"); default : printf("ERROR");break; }?

Answer: Option 2 As the first option is matching, the cases are evaluated till the break statement is encountered or end of switch statement is encountered.

1 Answers 4 views
What will be the output of the following PHP code <php $team = "arsenal"; switch ($team) { case "manu": echo "I love man u"; case "arsenal": echo "I love arsenal"; case "manc": echo "I love manc"; } >?

Answer: Option 3 If a break statement isn’t present, all subsequent case blocks will execute until a break statement is located.

1 Answers 3 views
One end of a helical spring is fixed while the other end carries the load W which moves with simple harmonic motion. The frequency of motion is given by (where $$\delta $$ = Deflection of the spring)?

Answer: Option 2 Let'

1 Answers 1 views
The velocity of a particle (v) moving with simple harmonic motion, at any instant is given by (where, r = Amplitude of motion and y = Displacement of the particle from mean position.)?

Answer: Option 2 Let'

1 Answers 1 views
One end of a helical spring is fixed while the other end carries the load W which moves with simple harmonic motion. The frequency of motion is given by (where $$\delta $$ = Deflection of the spring.)?

Answer: Option 2 Let'

1 Answers 2 views
The motion between a pair which takes place in __________ is known as incompletely constrained motion.?

Answer: Option 3 Let'

1 Answers 1 views
Muller Breslau’s principle for obtaining influence lines is applicable toi) trussesii) statically determinate beams and framesiii) statically indeterminate structures, the material of which is elastic and follows Hooke’s lawiv) any statically indeterminate structureThe correct answer is?

Answer: Option 1 Let'

1 Answers 1 views