Question 4831:

An object move in a circular path of radius 0.5m with a speed of ims.
What is its angular velocity?

A. 8 rads
B. 4 rads
C. 2 rads
D. 1 rads

Question 4832:

From the diagram above, calculate the work done when the particles moves from x=O0m to x=80m.

A. 1200J
B. 2400J
C. 6000J
D. 7000J

Question 4833:

A pinhole camera is placed 300m in front of a building so that the image is formed on a screen 5cm from the pinhole. If the image is 2.5cm high, the height of the building will be _____________

A. 25m
B. 50m
C. 100m
D. 150m

Question 4834:

After reflection from the concave mirror, rays of light from the sun converges.

A. At the radius of curvature
B. At the focus
C. Beyond the radius of curvature
D. Between the focus and radius of curvature

Question 4835:

Dispersion of white light is the ability of white light to _____________

A. Penetrate air, water and glass
B. Move in a straight light
C. Move around corners
D. Separate to its component colours