# Physics Question

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Q1. Choose the correct options i.e. A, B, C, or D and fill the circle.

1. The sum of two perpendicular forces 8N and 6N is

2N 10N 14N 5N

2. If A Bsinθ=ABcosθ then a ngle b etween the A and B i s

30

45

60

180

3. Th e magnitude of unit v ector i ×j is

1

-1

-j

K

4. Cr oss product of j×k is

0

1

I

-i

5. Im pulse has same unit a s that of

Force

Energy

Mass

Linear

momentum

6. Bal listic massiles are use d for

Short ranges

Long ranges

Very long ranges

Any range

7. Th e area between the v elocity time graph is equal t o

Time

Distance

Velocity

Mass

8. Th e velocity of an object is do ubled then its K.E is

Doubled

Constant

Four times

Sixteen times

9. If t he force acting on th e body is doubled then the accele ration is

Constant

Double

Half

One fourth

10 . Hig ht of projectile is ma ximu m at the angle of

45

60

30

90

11. For which pair of the horizontal ranges of the projectile is equal

30,45 30,60 50.70 20,40

12. Area under the force displacement graph is equal to

Velocity

Power

Work

Acceleration

13 . Tid al energy is due to th e grav itational pull of the

Moon

Mercury

Sun

Earth

14 . W hich is the non conser vative force

Frictional force

Gravitational force

Magnetic force

Electric force

15 . W hich one is the non-re newa ble energy source

Wind

Biomass

Coal

Sunlight

16 . W hich one is the conser vative force

Elastic spring force

Friction

Air resistance

Tension in the string

17 . In t he rotational motion analo gous of force is

Torque

Inertia

Velocity

Momentum

19 . In r otational motion the analo gous of mass is

Momentum

Inertia

Moment of inertia

Angular

momentum

20 . Th e number of satellite i n the global positioning sys tem is

22

3

24

36

21 . W hich electromagnetic i s use d for the satellite com munic ation

Microwaves

Radio waves

x-rays

Light waves

22. If a body rotates under the centripetal force is then the centripetal accelera tion is

Non zero

Variable

Increasing

Zero

23. Equation of continuity give the conservation of

Energy Mass Power Density

24. Terminal velocity in the fluid of a particle depends upon the

Nature of the fluid

Acceleration of the particle

Force on the particle

Angular velocity of the particle

25 . Hig h concentration of re d blo od cells increase the v iscosit y of blood from

2-3 times of water

3-5 times of water

7-9 times of water

5-7 times of water

26 . A 2 0m high tank is full o f wate r. A hole appears at i ts mid dle. The speed of efflux will be

10ms-1

14ms-1

9.8ms-1

11.5ms-1

27 . 1 t orr is equal to

133.3Nm-2

133.3Nm2

133.3Nm

133.3Nm-1

28 . If t he radius of the dropl et bec omes half, then the t ermin al velocity is

Half

Four times

One third

One fourth

29 . Blo od has density equal to

Oil

Honey

Milk

Water

30 . Pro duct of frequency an d tim e period is

1

Displacement

Velocity

Amplitude

31 . If t he length of simple is doubl ed then its time peri od is

Half

4 times

√2 𝑡𝑖𝑚𝑒𝑠

2 times

32 . Dis tance covered by bo dy in o ne vibration is 20cm. The a mplitude of the vi bratio n will be

5cm

10cm

15cm

20cm

33. Tunning of radio is the best example of

Mechanical resonance Electrical resonance Magnetic resonance Musical resonance

34. Frequency of second pendulum is

2Hz

10Hz

0.5Hz

0.1Hz

35 . Sp eed of sound in vacuu m is

333 ms-1

332 ms-1

340 ms-1

Zero

36 . Sp eed of sound in vacuu m at 0 0 C

333 ms-1

332 ms-1

340 ms-1

Zero

37 . Th e louder the sound th e grea ter will be the

Wavelength

Amplitude

Speed

Frequency

38 . It b of t ecomes difficult to r

wo sounds is more t ecogni

han ze the beats whn the differ ence in the betwe en the two frequencies

10Hz

20Hz

30Hz

50Hz

39 . Dis tance between the a djacen t node and antinode is

λ/2

Λ

λ/4

λ/3

40 . Th e value of ϒ for polyat omic gasses is

1.40

1.29

1.54

1.32

41 . Th e wavelength of a wa ve for closed pipe having th e leng th l its fundament al mo de is

2l

4l

l/2

L

42 . Fri nge spacing increases when we use

Lowest order

Higest order

Red light

Blue light

43. Polarization proves that the light waves are

Longitudinal

Stationary

Transverse

Matter

For which of the following colors will be the fringes width will be minimum in the double slit 44.

experiment

Violet Red Green Yellow

45. Thin film shows color due to

Interference

Diffraction

Polarization

Dispersion

46 . Th e light energy travels in spa ce as waves was firstl y perp osed by

Maxwell

Young

Einstein

Huygen

47 . Ne ar point for a person i s

20cm

25cm

25dm

25nm

48 . Effi ciency of diesel engi ne is

25-30 percent

30-35 percent

35-40 percent

40-45 percent

49 . In which process the ent ropy of the system remain s const ant

Isothermal

Isochoric

Adiabatic

Irreversible

50 . Sol id ice, liquid water, a nd wa ter vapors consist in t herm al equilibrium at a tempe rature

273K

273.16K

100C

273C