SMI181Q
May/June/2017
• MEMO
Turn Over
1 Turn Over
, SMI181Q
May/June/2017
Section A: Multiple Choice Questions (30 marks)
1. A block of mass M slides down a frictionless plane inclined at an angle θ with the
horizontal. The normal reaction force exerted by the plane on the block is
1. Mg.
2. Mg sin θ.
3. Mg cos θ.
4. Mg tan θ.
5. zero, since the plane is frictionless.
2. A proton, moving north, enters a magnetic field of certain strength. Because of this
field the proton curves downward. What is the direction of the magnetic field?
1. downward
2. upward
3. towards the east
4. towards the west
5. towards the north
3. A car battery is rated at 80 A ∙ h. An ampere-hour is a unit of
1. power.
2. energy.
3. current.
4. charge.
5. force.
4. A proton, moving north, enters a magnetic field of certain strength. Because of this
field the proton curves downward. What is the direction of the magnetic field?
1. downward
2. upward
3. towards the east
4. towards the west
5. towards the north
5. An object is placed in front of a convex mirror at a distance larger than twice the focal
length of the mirror. The image will appear
1. in front of the mirror.
2. inverted and reduced.
3. inverted and enlarged.
4. upright and reduced.
5. upright and enlarged.
6. An object is placed 21 cm from a concave lens of focal length 25 cm. What is the
magnification?
2 Turn Over
May/June/2017
• MEMO
Turn Over
1 Turn Over
, SMI181Q
May/June/2017
Section A: Multiple Choice Questions (30 marks)
1. A block of mass M slides down a frictionless plane inclined at an angle θ with the
horizontal. The normal reaction force exerted by the plane on the block is
1. Mg.
2. Mg sin θ.
3. Mg cos θ.
4. Mg tan θ.
5. zero, since the plane is frictionless.
2. A proton, moving north, enters a magnetic field of certain strength. Because of this
field the proton curves downward. What is the direction of the magnetic field?
1. downward
2. upward
3. towards the east
4. towards the west
5. towards the north
3. A car battery is rated at 80 A ∙ h. An ampere-hour is a unit of
1. power.
2. energy.
3. current.
4. charge.
5. force.
4. A proton, moving north, enters a magnetic field of certain strength. Because of this
field the proton curves downward. What is the direction of the magnetic field?
1. downward
2. upward
3. towards the east
4. towards the west
5. towards the north
5. An object is placed in front of a convex mirror at a distance larger than twice the focal
length of the mirror. The image will appear
1. in front of the mirror.
2. inverted and reduced.
3. inverted and enlarged.
4. upright and reduced.
5. upright and enlarged.
6. An object is placed 21 cm from a concave lens of focal length 25 cm. What is the
magnification?
2 Turn Over
