Question

1. If both the radius and mass of a planet were to double, the magnitude of the gravitational field strength at its surface would become a) Halved b) Unchanged c) Doubled d) Depends on the mass of the object on the surface e) Four times as much 2. If the mass of the Sun were to become half its current value, with Earth maintaining its same orbit, the time interval of one Earth year would a) Remain the same b) Decrease by a factor of ?2 c) Increase by a factor of ?2 d) Increase by a factor of 2 e) Decrease by a factor of 2 3. A satellite in geosynchronous orbit has a period of revolution of a) 1.5 h b) 1.0 h c) 24 h d) 365.26 d e) None of these 4. Satellite S1 is moving around Earth in a circular orbit of radius four times as large as the radius of the orbit of satellite S2. The speed of S1, v1 in terms of v2 equals a) 16v2 b) v2 c) 2v2 d) 0.5v2 e) None of these 5. The magnitude of the magnetic field 20cm from a straight wire with a current of 12A is a) 1.8×10?? b) 2.4×10?? c) 1.8×10?? d) 1.2×10?? e) 1.2×10?? f) None of these 6. A 1nC positive point charge is located at point A. The electric potential at point B is

          1. If both the radius and mass of a planet were to double, the magnitude of the gravitational field
strength at its surface would become
a) Halved
b) Unchanged
c) Doubled
d) Depends on the mass of the object on the surface
e) Four times as much

2. If the mass of the Sun were to become half its current value, with Earth maintaining its same
orbit, the time interval of one Earth year would
a) Remain the same
b) Decrease by a factor of ?2
c) Increase by a factor of ?2
d) Increase by a factor of 2
e) Decrease by a factor of 2

3. A satellite in geosynchronous orbit has a period of revolution of
a) 1.5 h
b) 1.0 h
c) 24 h
d) 365.26 d
e) None of these

4. Satellite S1 is moving around Earth in a circular orbit of radius four times as large as the radius of
the orbit of satellite S2. The speed of S1, v1 in terms of v2 equals
a) 16v2
b) v2
c) 2v2
d) 0.5v2
e) None of these

5. The magnitude of the magnetic field 20cm from a straight wire with a current of 12A is
a) 1.8×10??
b) 2.4×10??
c) 1.8×10??
d) 1.2×10??
e) 1.2×10??
f) None of these

6. A 1nC positive point charge is located at point A. The electric potential at point B is

1. If both the radius and mass of a planet were to double, the magnitude of the gravitational field
strength at its surface would become
a) Halved
b) Unchanged
c) Doubled
d) Depends on the mass of the object on the surface
e) Four times as much

2. If the mass of the Sun were to become half its current value, with Earth maintaining its same
orbit, the time interval of one Earth year would
a) Remain the same
b) Decrease by a factor of ?2
c) Increase by a factor of ?2
d) Increase by a factor of 2
e) Decrease by a factor of 2

3. A satellite in geosynchronous orbit has a period of revolution of
a) 1.5 h
b) 1.0 h
c) 24 h
d) 365.26 d
e) None of these

4. Satellite S1 is moving around Earth in a circular orbit of radius four times as large as the radius of
the orbit of satellite S2. The speed of S1, v1 in terms of v2 equals
a) 16v2
b) v2
c) 2v2
d) 0.5v2
e) None of these

5. The magnitude of the magnetic field 20cm from a straight wire with a current of 12A is
a) 1.8×10??
b) 2.4×10??
c) 1.8×10??
d) 1.2×10??
e) 1.2×10??
f) None of these

6. A 1nC positive point charge is located at point A. The electric potential at point B is

Added by David Y.

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