Physics MCQs for Class 9 with Answers Chapter 3

Things with _____________ area are more stable>

Larger

Smaller

All

None of these

If base of a right angle triangle is 3 cm and perpendicular is 2 cm. What is tanθ

0.7

1.5

2

3

Two forces of 2N and 4N are acting in opposite directions, Their resultant force will be

2 N

4 N

6 N

8 N

If force is capable of rotation a body in clockwise direction it is :`

Clockwise

Anticlockwise

It has no direction

Nil

To make a body more stable ________ should be lowered:

Axis of rotation

Center of gravity

Stabilty

None

If Fx and Fy are rectangular components of a vector F, then the magnitude of vector F is:[LHR-04 1st G]

The centre of gravity of hollow cylinder is the middle point on its:

Curved side

axis

Bottom

On upper side

Center of gravity of an irregular shaped body can be found with help of:

Screw guage

Plumbline

Meter rode

Wedge

The angle between rectangular components of a vector is

0°

90°

180°

270°

_____________ easily undo bolt?

Long spanner

Medium

Short spanner

Every spanner