MCQOPTIONS
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MCQOPTIONS
This section includes 760 Mcqs, each offering curated multiple-choice questions to sharpen your Grade9 knowledge and support exam preparation. Choose a topic below to get started.
| 601. |
The molecules of water are in constant motion and possesses |
| A. | kinetic energy |
| B. | sound energy |
| C. | heat energy |
| D. | atomic energy |
| Answer» B. sound energy | |
| 602. |
The distance covered by an object in unit time is called its |
| A. | speed |
| B. | velocity |
| C. | displacement |
| D. | position |
| Answer» B. velocity | |
| 603. |
A tennis ball hits vertically upward with the velocity of 25ms−1 and takes 4 s to reach the highest point. The maximum height reached by the ball is |
| A. | 45 m |
| B. | 55 m |
| C. | 30 m |
| D. | 50 m |
| Answer» C. 30 m | |
| 604. |
The spinning of the body about its axis is |
| A. | rotatory |
| B. | circular |
| C. | translational |
| D. | vibratory |
| Answer» B. circular | |
| 605. |
The quantities between which a graph is plotted are known as |
| A. | constants |
| B. | co-efficient |
| C. | surds |
| D. | variables |
| Answer» E. | |
| 606. |
If a body does not change its position concerning its surroundings, it is said to be at |
| A. | rest |
| B. | motion |
| C. | distance |
| D. | position |
| Answer» B. motion | |
| 607. |
A floating object displaces a fluid having a weight equal to the weight of the object as per the |
| A. | principle of floatation |
| B. | Einstein principle |
| C. | Pascal's principle |
| D. | Newton's principle |
| Answer» B. Einstein principle | |
| 608. |
The maximum limit up to which stress is applied on the body without deformation is called |
| A. | limit |
| B. | elastic limit |
| C. | strain |
| D. | torque |
| Answer» C. strain | |
| 609. |
The ratio of stress to tensile strain is called |
| A. | Pascal's modulus |
| B. | Young's modulus |
| C. | Newton's modulus |
| D. | Charles's Law |
| Answer» C. Newton's modulus | |
| 610. |
The SI unit of power is Young's modulus is |
| A. | Nm-3 |
| B. | Nm4 |
| C. | Nm-2 |
| D. | Nm-1 |
| Answer» D. Nm-1 | |
| 611. |
The states of matter are |
| A. | 2 |
| B. | 3 |
| C. | 5 |
| D. | 6 |
| Answer» C. 5 | |
| 612. |
A bus moving in a straight and leveled road is in |
| A. | linear motion |
| B. | vibratory motion |
| C. | circular motion |
| D. | random motion |
| Answer» B. vibratory motion | |
| 613. |
A vector quantity among the following is |
| A. | velocity only |
| B. | force only |
| C. | mass |
| D. | velocity and force |
| Answer» E. | |
| 614. |
If a car is moving at 30 ms-1 and uniformly slows down to 15 ms-1 in 5s then its deceleration is |
| A. | -3 ms-1 |
| B. | -4 ms-1 |
| C. | 5 ms-1 |
| D. | 21 ms-1 |
| Answer» B. -4 ms-1 | |
| 615. |
Displacement is defined as the |
| A. | longest distance between two points |
| B. | zero distance between two points |
| C. | shortest distance between two points |
| D. | all of above |
| Answer» D. all of above | |
| 616. |
A spinning motion of a body about its axis is called its |
| A. | rotatory motion |
| B. | vibratory motion |
| C. | circular motion |
| D. | linear motion |
| Answer» B. vibratory motion | |
| 617. |
A boy has pulled a cart through 40 m applying a force of 200 N. The work done by him is |
| A. | 7500 J |
| B. | 8000 J |
| C. | 5000 J |
| D. | 9000 J |
| Answer» C. 5000 J | |
| 618. |
Sunlight and water power are the sources of energy which are |
| A. | renewable |
| B. | very harmful |
| C. | fossils |
| D. | destroyable |
| Answer» B. very harmful | |
| 619. |
Solar energy can also be converted directly into electricity by |
| A. | solar cars |
| B. | mercury |
| C. | plasma |
| D. | solar cells |
| Answer» E. | |
| 620. |
A form of energy given by hot bodies is called |
| A. | heat energy |
| B. | kinetic energy |
| C. | chemical energy |
| D. | nuclear energy |
| Answer» B. kinetic energy | |
| 621. |
The work done in lifting a brick of mass 2 kg through a height of 5 m above ground will be |
| A. | 2.5 J |
| B. | 100 J |
| C. | 50 J |
| D. | 80 J |
| Answer» C. 50 J | |
| 622. |
The force which produces acceleration in the body is equal to the rate of change of |
| A. | velocity |
| B. | acceleration |
| C. | density |
| D. | momentum |
| Answer» E. | |
| 623. |
A body continues its state of rest or of uniform motion in a straight line provided no net force acts on it, this statement is called |
| A. | newton's 2nd law of motion |
| B. | newton's 1st law of motion |
| C. | newton's 3rd law of motion |
| D. | law of momentum |
| Answer» C. newton's 3rd law of motion | |
| 624. |
Mass is measured by a |
| A. | beam balance |
| B. | screw gauge |
| C. | physical balance |
| D. | Vernier calipers |
| Answer» B. screw gauge | |
| 625. |
The acceleration produced by a force of 120 N in a mass of 35 kg will be |
| A. | 4 ms−2 |
| B. | 3.43 ms−2 |
| C. | 5.21 ms−2 |
| D. | 6.8 ms−2 |
| Answer» C. 5.21 ms−2 | |
| 626. |
Which of the following material lowers friction when we pushed between metal plates |
| A. | water |
| B. | air |
| C. | oil |
| D. | fine marble powder |
| Answer» D. fine marble powder | |
| 627. |
When a force acts on a body, it produces an acceleration in the body and will be equal to the rate of change of |
| A. | velocity of the body |
| B. | displacement of the body |
| C. | inertia of the body |
| D. | momentum of the body |
| Answer» E. | |
| 628. |
Two masses 4.5 kg and 3.8 kg are attached to the ends of an inextensible string passes over a frictionless pulley. Its acceleration when both masses are moving vertically will be equal to |
| A. | 0.8 ms−2 |
| B. | 0.5 ms−2 |
| C. | 2 ms−2 |
| D. | 1.5 ms−2 |
| Answer» B. 0.5 ms−2 | |
| 629. |
The body jumps out of a moving van. There is a danger for him to fall in |
| A. | towards the moving van |
| B. | away from the van |
| C. | direction of motion |
| D. | under the van |
| Answer» C. direction of motion | |
| 630. |
A force acting on a body of mass 7 kg produces an acceleration of 10 ms−2. The acceleration that the same force will produce in a body of mass 9 kg will be |
| A. | 5 ms−2 |
| B. | 6 ms−2 |
| C. | 6.5 ms−2 |
| D. | 7.7 ms−2 |
| Answer» E. | |
| 631. |
When donkey pulls a cart, the action is on the |
| A. | cart |
| B. | donkey |
| C. | earth |
| D. | earth and cart |
| Answer» C. earth | |
| 632. |
The Greek letter used for summation is |
| A. | sigma(&sigma); |
| B. | μ |
| C. | π |
| D. | ω |
| Answer» B. μ | |
| 633. |
If after a slight tilt the body does not return to its previous equilibrium, then it is said to be in |
| A. | unstable equilibrium |
| B. | stable equilibrium |
| C. | zero equilibrium |
| D. | neutral equilibrium |
| Answer» B. stable equilibrium | |
| 634. |
If 150N of farce is applied on a spanner of 10 cm to open a nut then the length of spanner when the force applied on it is 60 N is |
| A. | 25 cm |
| B. | 80 cm |
| C. | 40 cm |
| D. | 50 cm |
| Answer» B. 80 cm | |
| 635. |
The splitting of vectors into two components is called |
| A. | addition of vectors |
| B. | division of vectors |
| C. | resolution of vectors |
| D. | multiplication of vectors |
| Answer» D. multiplication of vectors | |
| 636. |
Along which a force act is called |
| A. | line of action of force |
| B. | line of acting torque |
| C. | axis of rotation |
| D. | moment arm |
| Answer» B. line of acting torque | |
| 637. |
The forces that are parallel to each other and have the opposite direction are called |
| A. | negative forces |
| B. | unlike parallel forces |
| C. | like parallel forces |
| D. | positive forces |
| Answer» C. like parallel forces | |
| 638. |
Point where whole weight of body acts vertically is called |
| A. | center of mass |
| B. | midpoint |
| C. | center of gravity |
| D. | center of volume |
| Answer» D. center of volume | |
| 639. |
Vehicles are made heavy at the base in order to |
| A. | decrease center of gravity |
| B. | increase center of gravity |
| C. | decrease weight |
| D. | increase weight |
| Answer» B. increase center of gravity | |
| 640. |
The body is said to be rigid if the distance between pairs if particles doesn't change by applying |
| A. | friction |
| B. | law of inertia |
| C. | force |
| D. | law of momentum |
| Answer» D. law of momentum | |
| 641. |
If the resultant of all the forces acting on the body is zero, then the body satisfies |
| A. | 2nd condition for equilibrium |
| B. | third condition for equilibrium |
| C. | no equilibrium state |
| D. | first condition for equilibrium |
| Answer» E. | |
| 642. |
As compare to black surface, a white surface reflects |
| A. | nothing |
| B. | equal |
| C. | less |
| D. | more |
| Answer» E. | |
| 643. |
Like light rays, heat radiations also obey |
| A. | law of friction |
| B. | law of reflection |
| C. | law of motion |
| D. | law of refraction |
| Answer» C. law of motion | |
| 644. |
A small airplane without engine which ride over the terminals is known as |
| A. | glider |
| B. | moderator |
| C. | parachute |
| D. | spinner |
| Answer» B. moderator | |
| 645. |
Metals are good conductors due to |
| A. | rapid vibration of atoms |
| B. | small size molecules |
| C. | big size molecules |
| D. | free electrons |
| Answer» E. | |
| 646. |
If the temperature of an object is higher than its surroundings then it is |
| A. | radiating more heat than absorbing |
| B. | conducting more heat than absorbing |
| C. | absorbing more heat than radiating |
| D. | conducting less heat than radiating |
| Answer» B. conducting more heat than absorbing | |
| 647. |
We study the physical aspects of light, its properties, working and use of optical instruments in the branch named as |
| A. | mechanics |
| B. | Light |
| C. | heat |
| D. | atomic physics |
| Answer» C. heat | |
| 648. |
A way to express a number as a number between 1 and 10 having an appropriate power is called |
| A. | scientific notation |
| B. | prefix |
| C. | base units |
| D. | derived units |
| Answer» B. prefix | |
| 649. |
Digits other than zero are always |
| A. | estimated figures |
| B. | crossed figures |
| C. | non-significant figures |
| D. | significant figures |
| Answer» E. | |
| 650. |
We can express 0.00380 in scientific notation as |
| A. | 3.80 × 102 |
| B. | 3.80 × 104 |
| C. | 3.80 × 103 |
| D. | 3.80 × 10−3 |
| Answer» E. | |