TAMILNADU CM TALENT EXAM - SCIENCE ONLINE TEST

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TAMILNADU CM TALENT EXAM - SCIENCE ONLINE TEST - 1( English Medium).

SYLLABUS

1). LIGHT

2). HEAT

3). UNIVERSE

Any queries;

Prepared by

Vishnu Kumar S-9047415284.

Guided by

Saravanan Sir -+91 94443 02053

NAME *

Class *

School Name *

Village *

Taluk *

District *

Contact Number *

Are you pass Nmms and trust exam?. *

Nmms

Trust

Both

None

1) .The image formed by a plane mirror is *

1 point

Real

Diminished

Enlarged

Laterally inverted

2). We can see objects because of *

1 point

Reflection

Refraction

Transmission

Diffraction

3). Ratio of sine of angle of incidence to sine of angle of refraction is *

1 point

Gravitional law

Law of reflection

Law of refraction

Snells law

4). The radius of curvature of a concave mirror whose focal length is

5cm is

1 point

10 Cm

5 Cm

10.5 Cm

15 Cm

5). Total internal reflection will occur if the angle of reflection is *

1 point

45°

60°

90°

99°

6). Outer concentric shell in optic fiber is called *

1 point

Cladding

Core

Mantel

Coat

7) .The focal length of a concave mirror is 5cm. Its radius of curvature is *

1 point

5cm

10 Cm

2.5 Cm

12.5 Cm

8). *

1 point

I)-C, 2) -b, 3) -a ,4)-e, 5) -d

I) -C , 2). -a ,3) -d ,4) -e, 5)-b

I) -d , 2). b ,3)-a, 4) - e, 5)-d

I) -e , 2) -b , 3) -a, 4)- e, 5) d

9). The phenomenon involved in the sea breeze and the land breeze is *

1 point

Convection

Conduction

Radiation

None of these

10). Which year joseph black introduced the term latent heat? *

1 point

1780

1790

1750

1570

11).Name the Process in which a vapor is converted to liquid by releasing heat. *

1 point

Condensation

Freezing

Fusion

Conduction

12) .How much boiling water at 100°C is needed

to melt 2 kg of ice so that the mixture which

is all water is at 0°C?

1 point

1.6750 Kg

0.550 kg

1.6 Kg

2.6 kg

13 ). Astronomical telescopes use______ Mirrors. *

1 point

Convex mirror

Concave mirror

Spherical mirror

Plane mirror

14 ). Light travels from a rarer medium to a

denser medium. The angles of incidence

and refraction are respectively 45° and 30°.

Calculate the refractive index of the second

medium with respect to the first medium.

1 point

1.414

1.141

√2

Both 1& 3

15 ). Who is the Father of fibre optics? *

1 point

Charles k.kao

Narinder Singh kapany

Elias Snitzer

None of these

16). What is the sign of virtual image ? *

1 point

Positive sign

Negative sign

Both 1& 2

None

17).

Assertion: The incident ray is directed towards the centre of curvature

of spherical mirror. After reflection it retraces its path.

Reason : Angle of incidence (i) = Angle of reflection (r) = 0°.

1 point

(A) is true , (R) is false

(A) is false , (R) is true

Both (A) and (R) is true , (R) is correct explanation

Both (A) and (R) is true , (R) is not correct explanation

18 ). The Big Bang occurred _____ years ago. *

1 point

13.7 Million

12.7 million

13.5 million

11 million

19) .

Assertion : The period of revolution of a satellite around a planet is

directly proportional to the radius of the orbit of the satellite.

Reason : Artificial satellites do not follow Kepler’s Laws of motion

1 point

(A) is true, (R) is false

(A) is false , (R) is true

Both (A) and (R) is true , (R) is correct explanation

Both (A) and (R) is true , (R) is not correct explanation

20) . Full form of ISS *

1 point

Indian space station

International space station

Indo- asia Space station

International space society

21) . Which is the largest moon of our solar system?. *

1 point

Deimos

Phobos

Titan

Ganymede

22). Neptune has ___ moons *

1 point

23). Radius of the earth *

1 point

6317

7361

6371

3761

24 ). Which country have Roskosmos space station? *

1 point

Japan

Russia

Canada

USA

25) . K= ? *

1 point

K = C + 273.15

K= F+ 273.15

K = F/ 273.15

K= F-273.15

26). SI unit of heat capacity *

1 point

J/K

K/J

Jm–¹

J–¹/K

27). Uranus has ____ rings. *

1 point

28). Halley’s comet appears ___ years once. *

1 point

75 years

76 years

77 years

78 years

29) . Two cylinders of equal height and radius are made of copper and

aluminum. Which of them conducts heat faster?

1 point

Copper rod

Aluminium rod

Both of them

None of them

30). A bundle of glass threads, each of which is capable of transmitting

messages using light waves is called

1 point

Microscope

Convex

Periscope

Optic fibre

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