Explanation

Happy means خوش

Hapless means بے بس

Unlucky means بد قسمت

Lucky means خوش قسمت 

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Last updated by NA on 25-April-2026

Explanation

Explanation

The Doppler effect is applicable to all types of waves, including sound waves, light waves, and even water waves.

It describes the change in frequency or wavelength of a wave when there is relative motion between the wave source and the observer.

Explanation

Heat of reaction refers to the amount of heat released or absorbed during a chemical reaction.

If heat is released, the reaction is exothermic; if absorbed, it's endothermic.

Explanation

According to Newton's second law, 

F=ma, a constant non-zero force results in uniform acceleration of the mass.

Explanation

The time rate of change of magnetic flux has the same dimensions as that of potential difference (or electromotive force - EMF). 

Explanation

Explanation

The range of a projectile is the same for two complementary launch angles (i.e., they add up to 90°).

For example, a projectile launched at 30° and 60° will have the same range.

Explanation

 In an isothermal process, the temperature remains constant, so the internal energy of an ideal gas also remains constant.

Explanation

Energy and work have the same dimensional formula, $$[ML2T−2][ML^2T^{-2}]

Both represent the ability to perform work or cause a change in energy.