Quiz on Experimental Arrangement and Forces

What is the primary purpose of using a dark room or covering the apparatus with dark cloth during the experiment?

• To prevent light interference
• To enhance image brightness
• To reduce parallax error
• To stabilize the lens position

When measuring distances in the experiment, from where should all measurements be taken?

• From the edge of the lens
• From the center of the lens
• From the edge of the meter rule
• From the light source

Which of the following is NOT a property of the image obtained on the screen?

• It is a real image
• It is an inverted image
• It is always brighter than the object
• It is laterally inverted

If two forces of 5 N and 3 N act in the same direction, what is the resultant force?

• 2 N
• 8 N
• 15 N
• 3 N

According to the parallelogram rule, how do you determine the resultant of two forces acting at an angle?

• By adding their magnitudes
• By drawing a triangle
• By completing a parallelogram
• By measuring their angles

What happens to the resultant force when two equal forces act in opposite directions?

• It doubles
• It becomes zero
• It remains the same
• It increases

In the context of balanced forces, which scenario describes equilibrium?

• A car accelerating
• A book resting on a table
• A plane taking off
• A ball rolling down a hill

If an object is moving with uniform speed in a straight line, what can be said about the forces acting on it?

• They are unbalanced
• They are balanced
• They are increasing
• They are decreasing

What is the effect of increasing the object distance in a lens experiment?

• The image becomes smaller
• The image becomes larger
• The image remains the same size
• The image disappears

Which of the following statements about real images is true?

• They cannot be projected on a screen
• They are always upright
• They can be projected on a screen
• They are always smaller than the object