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Physics Test - 4

Que.1

The water is less dense as ice than as liquid. Which of the following deductions can be made out of it?
1.Due to less density ice floats on liquid water.
2.Ice on the surface of a body of water serves as insulator.
3.Fishes and other aquatic organisms survive even during winter in temperate countries.
Codes:

 

A.

Only 2

B.

Only 3

C.

1 and 2

D.

All

Que.2

Consider the following statements with respect to the ‘Fiber-optic’:
1.Fiber-optic cables carry information between two places using entirely radio waves based technology.
2.Fiber optics sends information coded in a beam of light down a glass or plastic pipe.
3.The field of fiber optics depends upon the total internal reflection of light rays.
Which of the above given statements are correct?

 

A.

1 and 3

B.

2 and 3

C.

1 and 2

D.

1, 2 and 3

Que.3

Goldilocks zone describes the habitable zone of the Universe. Which of the following are the characteristic features of the habitable zone?
1.Presence of liquid water.
2.The habitable zone would be farther away from the bigger star and nearer to the smaller stars.
3.The planets must radiate away the same amount of energy as absorbed from the Sun.
Codes:

 

A.

1 and 2

B.

1 and 3

C.

Only 1

D.

All

Que.4

Which of the following type of Instruments and their uses is/are correctly matched?
1.Hygrometer - Relative humidity
2.Pyrometer - Solar insolation
3.Sphygmomanometer - Fermentation
4.Zymometer - Blood Pressure
Codes:

 

A.

1 and 3

B.

1 and 2

C.

Only 1

D.

All

Que.5

Which of the following types and tomography and physical phenomenon used are correctly matched?
1.CT scan – use of X-rays.
2.MRI – use of radio-frequency waves.
3.Hydraulic tomography – use of fluid flow
4.Positron emission tomography – use of electrical resistance
Codes:

 

A.

1, 2 and 3

B.

2, 3 and 4

C.

1 and 2

D.

All

Que.6

A particle is at rest at any particular instant. Which of the following is true regarding this?

 

A.

Both, the velocity and the acceleration of the particle are essentially zero.

B.

The velocity of the particle is essentially zero but the acceleration of the particle may not be zero.

C.

Both, the velocity and the acceleration of the particle may not be zero.

D.

The velocity of the particle may not be zero but the acceleration of the particle is essentially zero.

Que.7

When a CD (compact disc used in audio and video systems) is seen in sunlight, rainbow like colors are seen. Choose the correct phenomenon among the following responsible for the above:
1.Refraction
2.Reflection
3.Diffraction
4.Transmission
Codes:

 

A.

1, 3 and 4

B.

2 and 3

C.

3 and 4

D.

2 and 4

Que.8

Which of the following statements correctly defines the difference between Diffussion and Osmosis?
1.Diffusion is a movement of a given substance from the place of its higher concentration to an area of its lesser concentration whereas Osmosis is from place of its lower concentration to an area of its higher concentration.
2.Semi-permeable membrane is must for Diffusion.
3.In Osmosis the moving particles may be solid, liquid or gas whereas in Diffusion it is for liquid medium only.
Codes:

 

A.

Only 1

B.

2 and 3

C.

1 and 3

D.

1 and 2

Que.9

A fuse is used in main electric supply as a safety device. Which of the following statements about the fuse is/are correct?
1.It is connected in parallel with the main switch.
2.It is made mainly from silver alloys.
3.It must have a low melting point.
4.It must have a very high resistance.
Codes:

 

A.

1 and 3

B.

Only 3

C.

1, 2 and 3

D.

1 and 4

Que.10

If a balanced force is applied on a bicycle it moves with a uniform velocity but the unbalanced force leads to:

 

A.

Production of more friction than moving force.

B.

De-accelerate the motion of an object.

C.

Possible change in speed and direction of bicycle.

D.

No change in uniform velocity.

Que.11

Which of the following statement/s correctly define the 'Weight of a body during the movement of a lift'?
1.If the lift is moving with uniform speed, the apparent weight of a body is equal to its true weight.
2.If the lift is going up with acceleration, the apparent weight of a body is less than its true weight.
3.If the lift is going down with acceleration, the apparent weight of a body is more than its true weight.
Codes:

 

A.

Only 1

B.

Only 3

C.

Only 2

D.

2 and 3

Que.12

Consider the following statements related to the Infrasonic waves:
1.Infrasonic waves are sound waves with frequencies lower than the upper audible limit of human hearing.
2.It is used for charting rock and petroleum formations below the earth.
3.Bats and porpoises use infrasound to communicate over distances.
Which of the above statements are correct?

 

A.

1 and 2

B.

2 and 3

C.

1 and 3

D.

All

Que.13

Which of the following phenomenon occurs due to refraction?
1.Shining of air bubble in water.
2.A fish pond when viewed from air appears to be at a smaller depth than actual depth.
3.Oval shape of sun in the morning and evening.
4.The sun remains visible a little time before and after sunrise and sunset, respectively.
Codes:

 

A.

2 and 3

B.

1 and 2

C.

2, 3 and 4

D.

1, 3 and 4

Que.14

Which of the following phenomenon occurs due to corrosion?
1.Formation of green coating on brass.
2.Tarnishing of silver.
3.Reduction of shining of steel utensils with time.
4.Galvanisation of Zinc.
Codes:

 

A.

1 and 2

B.

Only 2

C.

1 and 3

D.

All

Que.15

If one drops a ball made of steel on a very hard surface, it might bounce higher than a ball made of rubber. What is the reason behind steel being more elastic than rubber?

 

A.

Ratio of stress to strain in steel is less.

B.

Ratio of stress to strain in steel is more.

C.

Surface density of steel is higher than rubber.

D.

Surface density of steel is lower than rubber.

Que.16

Consider the following statements regarding use of physics in Cricket:
1.The Bernoulli’s principle works for both swing and reverse swing.
2.Magnus Effect is a factor in spin bowling.
Which of the above stated principles is/are correct?

 

A.

Only 1

B.

Only 2

C.

Both

D.

None

Que.17

Consider the following statements:
1.The principle used in tube lights is Electro Magnetic ballast.
2.The principle used in Compact Fluorescent Light or CFL bulb is Electronic ballast.
Which of the above statements is/are correct?

 

A.

Only 1

B.

Only 2

C.

Both

D.

None

Que.18

Consider the following statements regarding the Thermonuclear Weapon:
1.A thermonuclear weapon employs fusion of isotopes of hydrogen.
2.The fusion stage in such weapons is required to cause the fission.
Which of the above statements is/are correct?

 

A.

Only 1

B.

Only 2

C.

Both

D.

None

Que.19

Consider the following statements with regards to electrical resistance:
1.The resistance of a given object depends primarily on two factors: the material it is made up of, and its shape.
2.For a given material, the resistance is inversely proportional to the cross-sectional area.
3.All electrical elements, such as diodes and batteries satisfy Ohm's law of resistance.
Which of the above statements are true?

 

A.

Only 1

B.

1 and 2

C.

1, 2 and 3

D.

Only 2

Que.20

Consider the following statements with regards to the asteroids:
1.Asteroids are solid, rocky and irregular bodies.
2.Asteroids do have atmospheres but cannot support life.
3.It has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape.
Which of the above statements is/are correct?

 

A.

Only 1

B.

Only 3

C.

1 and 3

D.

2 and 3

Que.21

Match the following:
Quantity                    Unit
A.Luminous intensity  1. Gray
B.Plane angle             2. Candella
C.Magnetic flux          3. Radian 
D.Nuclear radiation     4. Weber
Codes:

 

A.

A-3; B-2; C-1; D-4

B.

A-2; B-3; C-1; D-4

C.

A-2; B-3; C-4; D-1

D.

A-3; B-2; C-4; D-1

Que.22

When a man jumps from a boat to the shore, the boat slightly moves away from the shore due to:

 

A.

Centripetal force.

B.

Conservation of momentum.

C.

Conservation of kinetic energy to potential energy.

D.

First law of Motion.

Que.23

Consider the following statements related to the atmospheric pressure:
1.Atmospheric pressure decreases with altitude.
2.Atmospheric pressure increases with latitude.
3.The slow fall in barometric reading is an indication of clear weather whereas sudden fall indicates storm.
Which of the above statements is/are correct?

 

A.

Only 1

B.

Only 3

C.

2 and 3

D.

All

Que.24

Consider the following statements about Holography.
1.Holography is a technique which enables three-dimensional images (holograms) to be made.
2.A Hologram when looked from various angles, projects different perspectives.
3.The holographic recording itself is an image.
Which of the above statements are correct?

A.

Only 1 & 2

B.

Only 2 & 3

C.

Only 1 & 3

D.

All of the above

Que.25

Consider the following statements about OLED (Organic Light-Emitting Diode).
i.In an OLED the emissive electroluminescent layer is a film of organic compound.
ii.OLED displays can be fabricated on flexible plastic substrates.
iii.OLED is more costly than the LCD and other displays.
Which of the above statements is/are correct?

 

A.

Only 1 & 2

B.

Only 1 & 3

C.

Only 2 & 3

D.

All of the above

Rank List

 
Rank
Name
Marks Obtained
SAURABH yadav
1
SAURABH yadav
47.34
FREDRICK HILARIAN
2
FREDRICK HILARIAN
47.34
prem kumar
3
prem kumar
29.38
RICHA SAXENA
4
RICHA SAXENA
26.72
ABHISHEK SAINI
5
ABHISHEK SAINI
23.40
Rohit
6
Rohit
22.06
Naveen
7
Naveen
22.04
Abhishek Choudhary
8
Abhishek Choudhary
20.74
tanisha das
9
tanisha das
17.38
Bhupesh sahu
10
Bhupesh sahu
14.74
mohd haseen
11
mohd haseen
11.42
Sudhanshu Shekhar
12
Sudhanshu Shekhar
11.40
gourav singh
13
gourav singh
11.36
Neelam
14
Neelam
10.76
monu
15
monu
10.08
SAGAR SAMANTA
16
SAGAR SAMANTA
8.10
Shiva Kumar Okram
17
Shiva Kumar Okram
8.10
sainath
18
sainath
8.08
sony
19
sony
6.08
dhivya
20
dhivya
5.38
benashn
21
benashn
4.78
Prannen Batra
22
Prannen Batra
2.76
DAYA SHANKAR
23
DAYA SHANKAR
2.00
PKM
24
PKM
0.00
siddappa
25
siddappa
0.00
ram pratap kumar
26
ram pratap kumar
0.00
John
27
John
0.00
Ankush Bansal
28
Ankush Bansal
0.00
Venkatraman
29
Venkatraman
0.00
rajeev
30
rajeev
0.00
Manjunath
31
Manjunath
0.00
aakash kumar
32
aakash kumar
0.00
Abhishek K
33
Abhishek K
0.00
ravindra
34
ravindra
0.00
SARAH NASREEN
35
SARAH NASREEN
0.00
CHANDRA PRAKASH
36
CHANDRA PRAKASH
0.00
gowtham
37
gowtham
0.00
YASHWANT
38
YASHWANT
0.00
Harshita
39
Harshita
0.00
sapna jaim
40
sapna jaim
0.00
Anjali Pandey
41
Anjali Pandey
0.00
harisha
42
harisha
0.00
Vishnukumar U P Gade Patil
43
Vishnukumar U P Gade Patil
0.00
Aasim
44
Aasim
0.00
Aman Gupta
45
Aman Gupta
0.00
sathishkumar
46
sathishkumar
0.00
armaan
47
armaan
0.00
jadish
48
jadish
0.00
imran
49
imran
0.00
G SATHISH
50
G SATHISH
0.00
Hani jassal
51
Hani jassal
0.00
nitin
52
nitin
0.00
smr jn
53
smr jn
0.00
shiva
54
shiva
0.00
 V SIVA NAIK
55
V SIVA NAIK
0.00
jeevan
56
jeevan
0.00
vidya
57
vidya
0.00
Burad ANIL
58
Burad ANIL
0.00
Lakhan Singh
59
Lakhan Singh
0.00
sai swaroop
60
sai swaroop
0.00
vickay
61
vickay
-0.66
nedhi mishra
62
nedhi mishra
-0.66
Ningthoujam henba
63
Ningthoujam henba
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