Explanation

To find the frequency, we can use the equation:

v_max = A * ω

where v_max = 31.4 cm/s, A = 5 cm

ω = v_max / A

= 31.4 cm/s / 5 cm

= 6.28 rad/s

Now, ω = 2 * π * f

f = ω / (2 * π)

= 6.28 rad/s / (2 * π)

= 1 Hz

Explanation

Explanation

A moving ball stops due to the action of frictional force.

Friction opposes the motion of the ball, gradually reducing its speed until it comes to a stop.

Explanation

In a delta connection of an induction motor, 5 slips are typically required.

These represent the number of distinct slip rings needed for the rotor winding connections.

Explanation

Power refers to the rate at which energy is supplied or converted by the appliance or circuit.

It is measured in watts (W) and indicates the energy usage or generation per unit of time.

Explanation

The wire used for fuse making has high resistivity and low melting temperature.

These properties ensure that the fuse melts quickly and safely breaks the circuit when excessive current flows through it.

Explanation

• Violet light has the smallest wavelength, approximately 380-450 nanometers (nm).
• While red light has the longest wavelength, approximately 620-750 nanometers (nm).
• The order of colors in the spectrum, from longest to shortest wavelength, is: Red, Orange, Yellow, Green, Blue, Indigo, Violet (ROYGBIV).

Explanation

A refracting telescope has two lenses:

1. A primary lens (objective) that collects and focuses light.
2. A secondary lens (eyepiece) that magnifies the focused light to form an image.

Explanation

• When animals and plants decay in the absence of air (anaerobic conditions), they produce a gas called biogas.
• Biogas is a mixture of methane (CH4) and carbon dioxide (CO2), with small amounts of other gases.
• It is produced through anaerobic digestion, a process in which microorganisms break down organic matter without oxygen.

Explanation

• Thermal Expansion is the natural increase in size of a substance as its temperature increases.
• It's a common phenomenon in solids, liquids, and gases.