A body is thrown vertically upward. At the highest point, its acceleration is MCQ with Answer and Explanation

A body is thrown vertically upward. At the highest point, its acceleration is

A. Variable

B. g upward

C. Zero

D. g downward

Answer: Option D

Solution (By JKExamLibrary)

At highest point velocity is zero, but acceleration due to gravity is still g (9.8 m/s²) downward. This causes it to fall back. Acceleration constant throughout free fall.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1 Report Error

Assertion (A): Gamma rays are fundamentally un-deflected by electric and magnetic fields. Reason (R): Gamma rays carry no electrical charge.

A. A is true but R is false.

B. Both A and R are true but R is NOT the correct explanation of A.

C. Both A and R are true and R is the correct explanation of A.

D. A is false but R is true.

View Answer & Solution Discuss

Correct Answer: Option C

Explanation:
Electric fields deflect charged particles via Coulomb forces (F=qE), and magnetic fields deflect moving charged particles via Lorentz forces (F=qvB). Gamma rays are purely high-energy electromagnetic photons. Because they lack any electrical charge (q=0), both electric and magnetic forces on them are exactly zero. Therefore, they pass through fields completely un-deflected. R explains A perfectly.

This question belongs to: Science Physics

Question #2 Report Error

A body of weight 20 N is immersed in water, apparent loss in weight is 5 N. Buoyant force is

A. 25 N

B. 20 N

C. 5 N

D. 15 N

View Answer & Solution Discuss

Correct Answer: Option C

Explanation:
Apparent loss in weight = buoyant force = weight in air - weight in water = 5 N. Archimedes principle. Apparent weight = 20-5 = 15 N.

This question belongs to: Science Physics