Explanation

• Amplitude is the maximum displacement of a wave from its equilibrium position.
• It is the distance from the rest position to the top of a crest or the bottom of a trough.

Explanation

A spectrum is a band of seven colors that appear when white light is passed through a prism or a similar device, separating the different wavelengths of light.

The seven colors of the spectrum, in order, are:

1. Red
2. Orange
3. Yellow
4. Green
5. Blue
6. Indigo
7. Violet

Explanation

Binoculars use a combination of lenses and prisms to magnify and redirect light, relying on total internal reflection to ensure minimal light loss and a bright, clear image.

Explanation

• Navigation satellites, such as GPS (Global Positioning System), GLONASS, and Galileo.
• They are used to provide location information and precision timing signals to GPS receivers on the ground.
• It allowing for precise navigation and tracking of vehicles, ships, and aircraft.

Explanation

• Axe, Knife, and Push pin are all examples of wedges, as they are used to split, separate, or lift things.
• Ramp is an inclined plane used to lift or move heavy objects, but it is not a wedge.

Explanation

The EMF induced across the ends of a wire moving through a magnetic field can be calculated using the formula:

E = Blv

Where:

• E is the induced EMF in volts
• B is the magnetic flux density in teslas
• l is the length of the wire in meters
• v is the velocity of the wire in meters per second

Given:

B = 0.10 T

l = 0.20 m

v = 3.0 m/s

Substituting the values into the formula, we get:

E = 0.10 x 0.20 x 3.0

E = 0.06 V

Explanation

Impossible Situation:

Constant velocity requires zero acceleration (Newton’s First Law).

Variable acceleration would imply a changing net force, which must alter velocity (contradicting "constant velocity").

Possible Situations:

Zero velocity, non-zero acceleration:

Example: A ball at the top of its vertical toss (v=0, a=9.8 m/s² downward).

Velocity east, acceleration west:

Example: A car moving east while braking (deceleration acts west).

Velocity east, acceleration east:

Example: A car speeding up in the east direction.

Explanation

Thomas Young demonstrated the wave nature of light through his famous double-slit experiment.

This experiment showed interference patterns, confirming light behaves as a wave.

Explanation

Price elasticity for various goods

• Normal goods- normal goods have a positive elasticity of supply as supplied quantity changes positively with the change in the price of the commodity.

• Inferior goods- Inferior goods have a negative price elasticity of supply as inferior goods have a negative relationship with the price of the commodity.

Explanation

In projectile motion, the vertical and horizontal components are treated separately.

The horizontal motion is uniform (constant velocity), while the vertical motion is subject to gravitational acceleration.