1 |
Einstein's theory gives us the physical picture of how the |
Body moves
Gravity works
Moment of inertia produced
Weightlessness creates
|
2 |
How many orbiting satellites from the Global positing system. |
3
12
24
22
|
3 |
A communication satellite is used ot reflect the signal of. |
Microwaves
Radio waves
y rays
x -rays
|
4 |
Time period of geostationary satellite of radius 'R' is |
1 hour
48 min
1 day
1 month
|
5 |
International Telecommunication satellite |
4,6,8 and 10 Hz
4,6,11 and 14 GHz
4,6,8 and 12 Hz
4,8,11 and 16 GHz
|
6 |
INTELSAT VI satellite operates at microwave frequencies of. |
2,4,6,10 GHz
4,6,11 and 14 MHz
4,6,11 and 14 GHz
2,4,6 AND 14 GHz
|
7 |
The largest satellite system is managed by |
116 countries
126 countries
136 countries
140 countries
|
8 |
The minimum number of correctly positioned communication satellites to cover whole populated earth is. |
2
3
100
200
|
9 |
As we go from pole to equator of earth, the value of 'g' |
Increase
Decrease
Remain constant
Zero
|
10 |
Height of geo stationary orbit of the satellite above the earth is. |
300 km
250 km
400 km
None of these
|
11 |
the height of the geostationary satellite above the equator is. |
35000 km
36000 km
34000 km
33000 km
|
12 |
Artificial gravity can be created in the space ship by |
Revolving around the earth
Spinning around its own axis
Increasing its velocity
Decreasing it svelocity
|
13 |
A man weight 1000 N in a stationary lift. If the lift moves up with an acceleration of 10 ms-2. then its weight becomes. |
1000 N
2000 N
3000 N
0 N
|
14 |
The weight of an object an elevator moving down with an acceleration of 9.8 m/s2 will becomes |
Half
Double
Unchanged
Zero
|
15 |
An elevator is moving up with an acceleration equal to 'g' An apparent weight of the body in an elevator is. |
Zero
Equal to real weight
2 mg
3 mg
|
16 |
A 60 kg man in an elevator is moving upward with an acceleration of 9.8 ms-2. The apparent weight of the man. |
Increase
Decreases
Remain constant
Becomes zero
|
17 |
If a rocket is accelerating upward with an acceleration of 2 g, an astronaut of weight, mg in the rocket shows apparent weight. |
Zero
Mg
2 mg
3 mg
|