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Monday, 20 April 2026
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Physics Past Questions and Answers

Topic: examples and applications

Jamb Physics Questions - examples and applications

Question 1:
which of the following does NOT cause a reduction of the surface tension of water?
  • A Soap solution
  • B Detergent
  • C Alcohol
  • D Camphor
  • E Grease
View Answer & Explanation
Question 2:
In a radioactive series
\( ^{235} _{92}L \to ^{235} _{92}M \to ^{231} _{90}N \to ^{231} _{91}\phi \)
The particles emitted are respectively
  • A \( \beta , \beta , \alpha \)
  • B \( \alpha , \gamma , \beta \)
  • C \( \gamma , \alpha , \beta \)
  • D \( \alpha , \alpha , \beta \)
  • E \( \beta , \alpha , \beta \)
View Answer & Explanation
Question 3:
Which of the following statements is true about liquid pressure is NOT correct? The pressure
  • A At a point in a liquid is proportional to the depth
  • B At any point in a liquid is the same at the same level
  • C Is exerted equally in all directions at any point
  • D Of a liquid at any point on the wall of its container acts in a direction perpendicular to the wall
  • E At a particular depth depends on the shape of the vessel
View Answer & Explanation
Question 4:
A small steel needle is carefully floated on water in a beaker. When a few drops of kerosine are introduced into the water the needle sink. Which of the following statements correctly explain(s) the observation? i. there is tension on the water surface ii. kerosine reduces the density of water so that needle becomes denser than water iii. kerosine reduces the surface tension of water
  • A I only
  • B Ii only
  • C Iii only
  • D I and ii
  • E I and iii
View Answer & Explanation
Question 5:
Which of the following assumptions is made in a simple pendulum experiment? the
  • A Suspending string is inextensible
  • B Bob has a finite size
  • C Bob has a definite mass
  • D Initial angle of oscillation must be large
View Answer & Explanation