RRB NTPC General Science and Life Science — practice questions — page 3

Explore 62 free General Science and Life Science questions in RRB NTPC Science. Open each question or exercise to read its content, reference answers and available explanation.

Practise General Science and Life Science with Quill →

General Science and Life Science questions and exercises with answers

Showing questions 61–62 of 62.

When a physical body moves in uniform circular motion, the acting centripetal force altersRead the answer and worked solution →Which kinematic quantity remains constant for a body undergoing uniform circular motion along a circle?Read the answer and worked solution →

Worked practice questions

When a physical body moves in uniform circular motion, the acting centripetal force alters

Direction only
Speed only
Inertial mass
Rest energy

Show answer and solution

Correct answer: A. Direction only

Centripetal force acts perpendicular to the velocity vector, changing the direction of motion while leaving the scalar speed unchanged.

Open this question →

Which kinematic quantity remains constant for a body undergoing uniform circular motion along a circle?

Velocity vector
Scalar speed
Force direction
Acceleration

Show answer and solution

Correct answer: B. Scalar speed

In uniform circular motion, scalar speed is constant while the velocity vector, acceleration vector, and net force continually change direction.

Open this question →

How to practise

Choose a General Science and Life Science question and try to work out your answer.
Open the question to check the correct answer and read its worked solution.
Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

Put it into practice

Continue with General Science and Life Science practice for RRB NTPC. Read explanations as you go. No signup form needed to start.

Practise General Science and Life Science →