PHYSICS PAPER - I
CLASS IX
MCQ’S
25 Marks
1). Laser is the field _________ physics,
a). Plasma
b). Astro
c). Bio
d). Atomic
2). Rate of change of velocity is called,
a). Displacement
b). Momentum
c). Acceleration
d). Motion.
3). Laws of motion were put forward by,
a). Einstein
b). Pascal
c). Newton
d). Faraday
4). First Law of Motion is also called as Law of,
a). Force
b). Inertia
c). Gravitation
d). Momentum.
5). The S.I unit of Momentum is,
a). gram .m/sec
b). N/sec
c). kg.cm/sec
d). kg.m/sec
6). The S.I unit of force is,
a). gm.m/sec
b). N/sec
c). Newton
d). Kg.m/sec
7). If the force acting on a body is doubled, then the acceleration produced will be,
a). ½
b). ¼
c). Double
d). Quadrupled.
8). The agent which changes or tends to change the motion of a body,
a). Acceleration
b). Speed
c). Force
d). Momentum.
9). The vector quantity is,
a). Mass
b). Torque
c). Distance
d). Time.
10). In a right angle triangle Cos = _____
a). Perp / hypo
b). Base / hypo
c). Perp / base
d). Base / perp
11). When two equal and opposite vectors are added then their resultant vector has,
a). Same magnitude
b). Zero magnitude
c). 1 magnitude
d). Double magnitude.
12). The mass of the sphere is 70gm and its volume is 5cm so the density of the
sphere is,
a). 13
b). 14
c). 15
d). 16
13). Two forces of 3N & 4N are acting on a body if the angle between them is 90 the
magnitude of resultant force is,
a). 1 N
b). 5N
c). 7N
d). 12N
14). By dividing the displacement of a moving body by the time taken we will
obtain,
a). Average speed
b). Average Velocity
c). Uniform Velocity
d). Acceleration
15). The motion of simple pendulum is an example of,
a). Random motion
b). Linear motion
c). Rotatory motion
d). Vibratory motion.
16). A stone of 2kg falls from the top of the tower and it reaches to the ground in
3sec. how long will it take by a stone of mass 3 kg to hit the ground if it is
dropped from the Top of same tower?
a). 2sec
b). 3 sec
c). 5sec
d). 6 sec
17). The scientist who determined the longitude and altitude of the Earth was,
a). Al-Beruni
b). Musa Khwarizmi
c). Hassan Tusi
d). Ibn-ul-Haithm
18). The information that we can get from the velocity-time graph is,
a). The velocity
b). The Displacement
c). Velocity & displacement
d). Displacement, Velocity & Acceleration.
19). PQRS is a rectangle with PS= 2m and the Angle RPQ=30, then the length of
the diagonal PR is
a). 2m
b). 4m
c). 6m
d). 1m
20).Which one is the formula for the Volume of The Earth?
a). 4/3 r
b). 4/3 r
c). 4/3 r
d). 4/3 r
21). The distance covered by a moving body can be determined from its graph by
finding
a). The area under the graph.
b). The volume of the graph
c). The Size of the graph
d). The area of the moving body.
22). The acceleration of a moving body with uniform velocity is
a). 3m/sec
b). 0m/sec
c). 2 m/sec
d). 1m/sec
23). A ball is thrown vertically Upward at 1.2 m/sec and de-accelerates uniformly at
10 m/sec. how long it will take to reach the highest point?
a). 1.2 sec
b). 0.12sec
c). 12 sec
d). 6.0 sec
24). If a force of 10N acting on a body along X-axis, then the value of vertical
component of force is,
a). 90N
b). 0 N
c). 60 N
d). 30 N
25). The negative Vector of a vector “A “is
a). A/2
b).-A
c). 2A
d). A/3