NEET  >  Test: Torque

# Test: Torque

Test Description

## 10 Questions MCQ Test Physics Class 11 | Test: Torque

Test: Torque for NEET 2022 is part of Physics Class 11 preparation. The Test: Torque questions and answers have been prepared according to the NEET exam syllabus.The Test: Torque MCQs are made for NEET 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Torque below.
Solutions of Test: Torque questions in English are available as part of our Physics Class 11 for NEET & Test: Torque solutions in Hindi for Physics Class 11 course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Test: Torque | 10 questions in 10 minutes | Mock test for NEET preparation | Free important questions MCQ to study Physics Class 11 for NEET Exam | Download free PDF with solutions
 1 Crore+ students have signed up on EduRev. Have you?
Test: Torque - Question 1

### A stone of mass m tied to a string of length l is rotating along a circular path with constant speed v. The torque on the stone is

Detailed Solution for Test: Torque - Question 1

Hence the torque is zero .Because the line of action of the tension passes through the centre .So lever arm of tension is zero So the torque acting is also zero .

Test: Torque - Question 2

### An engine develops a power of 360 kw, when rotating at 30 revolutions per second. The Torque required to deliver this power is

Detailed Solution for Test: Torque - Question 2

The power delivered by the torque τ exerted on rotating body is given by
P=τω or τ=P/ω
Here P=360KW=360000 Watt
ω=30 x 2π rad/sec,
now,
τ=360000 /60×3.14Nm
τ= 1910.8 Nm

Test: Torque - Question 3

### Which of the following represents the correct relationship between angular displacement and torque?

Detailed Solution for Test: Torque - Question 3

Torque of a bar is proportional to force applied tangential to bar, and hence torque can be treated as direct proportional with angular displacement.

Test: Torque - Question 4

Which of the following is an axial vector?

Detailed Solution for Test: Torque - Question 4

Torque is an axial vector. Axial vectors are those vectors which represent rotational effect and act along the axis of rotation. E.g. angular velocity, torque, angular momentum etc. are axial vectors.

Test: Torque - Question 5

Moment of inertia of a solid sphere of mass M and radius R is ______

Test: Torque - Question 6

A wheel having moment of inertia 3.5 kgm2 rotates about the vertical axis. The torque required to produce an angular acceleration of 25rad/s2 in the wheel is

Detailed Solution for Test: Torque - Question 6

Torque = moment of inertia × angular acceleration
3.5 × 25 =87.5 Nm

Test: Torque - Question 7

For a system to be in equilibrium, the net torques acting on it must balance. This is true only if the torque are taken about

Detailed Solution for Test: Torque - Question 7

For a system to be in equilibrium torques on the system must be equal to zero
This is true only if the torques are taken about the centre of mass as the whole mass of the object seems to be situated at centre of mass.

Test: Torque - Question 8

The rotational analog to the expression F = ma in linear motion is ___________in rotational motion.

Detailed Solution for Test: Torque - Question 8

Force (in linear) = torque (in rotational)
Mass (in linear motion) = moment of inertia ( l ) (in rotational motion)
Acceleration(a) (in linear) = angular acceleration (α) (in rotational)
F = ma (in linear) and torque = Iα (in rotational)

Test: Torque - Question 9

Rotational analogue of force of linear motion is

Detailed Solution for Test: Torque - Question 9

Rotational analogue of force in linear motion is torque. Torque is the turning effect of force.

Test: Torque - Question 10

When no external Torque acts on a system, what is conserved

Detailed Solution for Test: Torque - Question 10

τ = dI/dt
If τ = 0 then L is conserved.

## Physics Class 11

126 videos|449 docs|210 tests
 Use Code STAYHOME200 and get INR 200 additional OFF Use Coupon Code
Information about Test: Torque Page
In this test you can find the Exam questions for Test: Torque solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Torque, EduRev gives you an ample number of Online tests for practice

## Physics Class 11

126 videos|449 docs|210 tests

### How to Prepare for NEET

Read our guide to prepare for NEET which is created by Toppers & the best Teachers