Explanation

Angular acceleration is produced by torque.

Torque is the rotational equivalent of force.

And just as force causes linear acceleration, torque causes angular acceleration. 

Explanation

A thinner convex lens has a longer focal length because it bends light rays less sharply than a thicker convex lens.

A thicker convex lens has a shorter focal length as it bends light rays more strongly, bringing them to focus sooner.

Explanation

A Vernier caliper provides precise linear measurements of small objects.

It can measure internal, external, and depth dimensions with high accuracy (usually up to 0.1 mm or 0.01 cm).

The least count of a Vernier caliper is 0.02mm.

Explanation

• Red
• Yellow
• Blue

• Orange
• Green
• Violet

• Red-Orange,
• Yellow-Orange,
• Yellow-Green,
• Blue-Green,
• Blue-Violet,
• Red-Violet

Explanation

Copper is a good conductor of heat.

That's why it’s used in cooking utensils and electrical wiring.

Wood, plastic, and glass are poor conductors (insulators), meaning they do not transfer heat easily.

Explanation

A turbocharger uses the energy from exhaust gases to spin a turbine,

This then compresses air before it enters the engine, allowing for more air to be intake and burned, resulting in increased power and efficiency. 

Explanation

An impeller is a rotating component found in a centrifugal compressor that compresses air by using centrifugal force.

As the impeller spins at high speed, it accelerates the air outward, increasing its kinetic energy. 

Explanation

A blue shirt reflects blue light.

When white light (which contains all colors) hits the shirt, the shirt's material absorbs most of the colors, but reflects the blue wavelengths

This reflected our eyes then perceive blue light as the color blue. 

Explanation

Celsius and Fahrenheit are two temperature scales.

The Fahrenheit and Celsius scales have one point at which they intersect.

They are equal at -40°C and -40°F.

Explanation

 Microscope Diopter

This is a simple turning device which is either attached to the outside of an eyepiece tube of a binocular head, or to the eyepiece itself. When the diopter is turned, it raises or lowers the eyepiece to adjust the focus for each eye.