To achieve high value of rocket velocity, one must have :


A) high exhaust velocity and low loss of mass during propulsion

B) high exhaust velocity and higher loss of mass during propulsion

C) low exhaust velocity and higher loss of mass during propulsion

D) none of the above

Correct Answer:
B) high exhaust velocity and higher loss of mass during propulsion


Part of solved Physics questions and answers : >> General Science >> Physics








Comments

No comments available




Similar Questions
1). Aviation fuel for jet aeroplanes consists of purified :
A). petrol
B). kerosene
C). gasoline
D). diesel
-- View Answer
2). Recoil of a gun is an example of :
A). conservation of mass
B). conservation of energy
C). conversion of P.E. into K.E.
D). conservation of linear momentum
-- View Answer
3). The most abundant metal in the earth's crust is :
A). zinc
B). copper
C). aluminium
D). iron
-- View Answer
4). Which of the following is the second most abundant metal in the earth's crust?
A). Copper
B). Aluminium
C). Iron
D). Zinc
-- View Answer
5). Arrange the following metals in the decreasing order of their relative abundance in earth's crust after aluminium :
1. Calcium 2. Iron 3. Sodium 4. Magnesium
A). 1, 4, 2, 3
B). 1, 2, 4, 3
C). 2, 1, 3, 4
D). 2, 1, 4, 3
-- View Answer


6). The most malleable metal is :
A). Silver
B). Gold
C). Aluminium
D). Sodium
-- View Answer
7). Air is a/an :
A). compound
B). element
C). mixture
D). electrolyte
-- View Answer
8). Balloons are filled with :
A). helium
B). oxygen
C). nitrogen
D). argon
-- View Answer
9). Which of the following is used in beauty parlours for hair setting?
A). Chlorine
B). Sulphur
C). Phosphorus
D). Silicon
-- View Answer
10). Which of the following is the lightest gas?
A). Nitrogen
B). Hydrogen
C). Ammonia
D). Carbon dioxide
-- View Answer