A person is standing in the middle of a boxcar on a train moving 100 km per hour. If the motion of the boxcar remains constant, where in the boxcar will the person most likely land after he jumps straight up?

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Horizontal forces act on two boxes, initially at rest, as shown. The magnitude and direction are of the horizontal forces are also shown. What happens to Box X and Box Y as a result of the forces?

• Box X starts moving, speeding up, and Box Y remains at rest

• Box X starts moving at constant speed, and Box Y remains at rest

• Box X starts moving at constant speed, and Box Y starts moving, speeding up

• Box X starts moving, speeding up, and Box Y starts moving at a constant speed

A student placed a pencil in a cup of water.  The pencil appears broken because light-

• always travels in a straight line
• bends when it passes through water
• makes the water in the glass evaporate
• reflects the pencil on the water's surface

Which lens represents the path light takes through a diverging lens?

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Which type of electromagnetic radiation is the reason we need sunglasses and sunscreen to avoid getting a sunburn?

• X-rays
• Gamma Rays
• Ultraviolet waves
• Infrared waves

what is the cause of the phenomenon?

• Summation of light

• Dispersion of light

• Scattering of light

• Reflection of light

Which of the following above is a Luminous and Non-Luminous light in consecutive order:

i.                     Sun

ii.                   Earth

iii.                 Moon

iv.                 Table

v.                   Lamp

vi.                 Mirror

vii.                Television

• I,ii,iii & iv,v,vi

• I,iii,v & ii, iv,viii

• I,v,vii & ii,iv,vi

• Ii,iii,iv & v,vi,vii

The picture on the right is a sample of reflection. A and B is for the following:

• Reflection, Incidence

• In , out

• Left , right

• Incidence, reflection

Your eyes are ____________ lenses.

• convex

• concave

• contact

• all of the above

Which statement is true regarding what we see? When we see things, what we are really seeing is:

• The light being absorbed by things

• The light being refracted by things

• The light being reflected from things

• None of these