Explanation

• As temperature increases, the heat energy of a substance also increases.
• This is because temperature is a measure of the average kinetic energy of the particles in a substance, and as temperature increases, the particles gain kinetic energy and therefore heat energy.

Explanation

Turning effect of force is called torque

Torque is used to measure coupling while the moment is not.

Both torque and moment have the Newton meter as the SI unit; torque is presented as Nm/revolution while moment is presented as Nm.

Moment is a static force while torque is a movement force.

Explanation

The Earth bulges at the equator and rotates, creating a centrifugal force that slightly reduces gravity there.

At the poles, this effect is minimal, so ‘g’ is stronger at the poles than at the equator.

Explanation

A diode is made by joining P-type and N-type doped semiconductors to form a PN junction, which allows current to flow in only one direction.

Explanation

To form an n-type semiconductor, a pentavalent impurity (an element from Group 15 of the periodic table) is added to a pure semiconductor.

Common examples of such impurities are Phosphorus (P), Arsenic (As), and Antimony (Sb).

These pentavalent atoms have five valence electrons,

Providing one extra electron to the semiconductor material,

Which then acts as a free electron and becomes the majority charge carrier.

Explanation

The RMS (Root Mean Square) value of an AC signal is a measure of its effective value,

Representing the DC equivalent that would produce the same amount of heat in a resistive load.

For a given AC signal, its RMS value is a constant and does not vary with the instantaneous phase angle.

Explanation

- 14 dozen eggs = Rs.100  

- 48 eggs = 4 dozen → 4 × 12 = Rs.48  

- Total = Rs.100 + Rs.48 = Rs.148

Last updated 14-feb-2026

Explanation

"Cold" is the opposite of "Hot",

Similarly, "Bright" is the opposite of "Dark".

Explanation

• The word "avidly" means with great enthusiasm or eagerness, which fits the context of a miser gazing at a pile of gold coins.
• A miser is someone who loves money and material wealth, so it's likely they would gaze at their treasure with a strong desire and enthusiasm.
• Here's the sentence with the correct answer: The miser gazed avidly at the pile of gold coins in front of him.
  

Explanation

Torque is a vector quantity.

The direction of the torque vector depends on the direction of the force on the axis