SPSC 25 years Past Papers 2001 to 2025

Q1651: Which of the following series of hydrogen falls in the infrared region?

اورکت خطے میں ہائیڈروجن کی مندرجہ ذیل سیریز میں سے کون سا سلسلہ آتا ہے؟

Pfund

Lyman

Balmer

None of these

Q1652: Radioactivity is associated with ______?

ریڈیو ایکٹیویٹی ______ کے ساتھ وابستہ ہے؟

Emissions of electrons

Decay of Nucleus

Decay of atoms

None of these

Q1653: If the current in an electric bulb decreases by 0.5% then the power in the bulb decreases by approximately ______?

0.25%

2%

1%

None of these

Q1654: A body is projected with the same velocity at angle 35°, 70°, 60°, 20° from the horizontal. The maximum ratio will be at _____?

20°

35°

70°

None of these

Q1655: The momentum of an object at a given instant is independent of its ______?

کسی دیئے گئے فوری طور پر کسی شے کی رفتار اس کے ______ سے آزاد ہے؟

Acceleration

Velocity

Mass

None of these

Explanation

Momentum ( $p = mv$ ) depends on an object's mass and velocity, but not directly on its acceleration.

Acceleration affects how momentum changes over time, but at a given instant, momentum is independent of acceleration.

Q1656: A constant current is tent through a helical coil. The coil ______?

ایک مستقل کرنٹ ایک ہیلیکل کنڈلی کے ذریعے خیمہ ہے۔ کنڈلی ______؟

Produces zero magnetic field at its center

Tends to get shorter

Tends to get longer

None of these

Q1657: Idiom: Lean and mean means?

Using only what is necessary

To create something

To destroy something

None of these

Q1658: Analogy of Junket : _____ :: Junk : Trash.

Trip

Refuse

Trinket

None of these

Q1659: Which poet invented the concept of the variable foot in poetry?

Robert Frost

Emily Dickinson

William Carlos Williams

None of these

Q1660: Hellenism of Keats connotes _____?

His love of cultures

His love of beauty

His love of Greek culture and art

None of these