Physical World Test

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Physical World Test - 19

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following does not comes under microscopic forces?

A
Normal force

B
Tension force

C
Frictional force

D
All of these

Solution

Normal force,tension force and Frictional force,all are macroscopic forces.
Question 2
1 / -0

Oersted and Faraday unified which of the following achievements?

A
Electric and magnetic phenomena

B
Electromagnetism and optics

C
Electro-weak forces

D
Terrestrial and celestial

Solution

Electric and magnetic was explained by Oersted and Faraday in 1820.
Question 3
1 / -0

Which of the following forces have the infinite range?

A
Weak nuclear and Strong nuclear force

B
Electromagnetic and Strong nuclear force

C
Gravitational and Electromagnetic force

D
Gravitational and Weak nuclear force

Solution
Question 4
1 / -0

Heliocentric theory was proposed by ................

A
Copernicus

B
Ptolemy

C
Newton

D
Tychobrahe

Solution

Heliocentric theory is an astronomical model which was proposed by Polish astronomer Nicolaus Copernicus. In this theory, the sun is at the center of the solar system and all the planets and heavenly bodies revolve around it.
Question 5
1 / -0

Name the Indian scientist who has contributed in the discovery of inelastic scattering of light by molecules.

A
C.V. Raman

B
M.N. Saha

C
S.N. Bose

D
None of the above

Solution

C.V. Raman is the Indian scientist who has contributed in the discovery of inelastic scattering of light by molecules.
Question 6
1 / -0

Rishi chakra was a famous ancient scholar in the field of ?

A
Ayurvedic medicine

B
Homeopathy

C
Alopathy

D
chemistry

Solution

Rishi chakra was a famous ancient scholar in the field of Ayurvedic medicine.
Question 7
1 / -0

Stars appears to move from east to west because

A
all stars move from east to west

B
the earth rotates from west to east

C
the earth rotates from east to west

D
the background of the stars moves from west to east

Solution

it is relative motion, we are moving with earth which is rotating and we see starts going from east to west then earth must be rotating from west to east.
so best possible answer is B.
Question 8
1 / -0

Which of the following scientific phenomenon is involved in the generation of Hydroelectric power?

A
Motion of charged particles in electromagnetic fields

B
Conversion of gravitational potential energy into electrical energy

C
Bernoullis principle in fluid dynamics

D
Trapping and cooling of atoms by laser beams and magnetic fields.

Solution

In dams,the gravitational potential energy of water is used to turn the turbines which generate electrical energy.
Question 9
1 / -0

The Giant Metrewave Radio Telescope (GMRT) is related to _________________.

A
Superconductivity

B
Generation, propagation and detection of electromagnetic waves

C
Detection of cosmic radio waves

D
Trapping and cooling of atoms by laser beams and magnetic fields

Solution

The Giant Metrewave Radio Telescope (GMRT) is related to Detection of cosmic radio waves.
Question 10
1 / -0

Raghu learnt something in school and he told his friends "An object can appear smaller or bigger in size depending on its distance from you. So, an elephant can look as small as a cat if it is far away."
Based on this, his friends said the following:
Kabir: "All stars are of the same size."
Raina: "All other stars are definitely smaller than the Sun."
Karen: "The Sun and the Moon are definitely of the same size.
"Shifa: "There could be a star which is bigger than the Moon."
Who is correct?

A
Only Shifa.

B
Only Raina.

C
Only Kabir and Karen.

D
Only Kabir and Raina.

Solution

$$\begin{array}{l}\text { Raghu learnt that object size depends on the distance } \\\text { from viewer. } \\\text { 1) Kabir: - He Said all star's are of same size. } \\\text { Statement is false as different star's are at different }\end{array}$$
$$\begin{array}{l}\text { distances we cannot compare. } \\\text { Raina, karen are also false because of Same reason. } \\\text { So Only Shifa is Correct. }\end{array}$$

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Re-Attempt Weekly Quiz Competition

Physical World Test - 19

Result

Physical World Test - 19

Score

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SHARING IS CARING

Question 1

Normal force

Tension force

Frictional force

All of these

Solution

Question 2

Electric and magnetic phenomena

Electromagnetism and optics

Electro-weak forces

Terrestrial and celestial

Solution

Question 3

Weak nuclear and Strong nuclear force

Electromagnetic and Strong nuclear force

Gravitational and Electromagnetic force

Gravitational and Weak nuclear force

Solution

Question 4

Copernicus

Ptolemy

Newton

Tychobrahe

Solution

Question 5

C.V. Raman

M.N. Saha

S.N. Bose

None of the above

Solution

Question 6

Ayurvedic medicine

Homeopathy

Alopathy

chemistry

Solution

Question 7

all stars move from east to west

the earth rotates from west to east

the earth rotates from east to west

the background of the stars moves from west to east

Solution

Question 8

Motion of charged particles in electromagnetic fields

Conversion of gravitational potential energy into electrical energy

Bernoullis principle in fluid dynamics

Trapping and cooling of atoms by laser beams and magnetic fields.

Solution

Question 9

Superconductivity

Generation, propagation and detection of electromagnetic waves

Detection of cosmic radio waves

Trapping and cooling of atoms by laser beams and magnetic fields

Solution

Question 10

Only Shifa.

Only Raina.

Only Kabir and Karen.

Only Kabir and Raina.

Solution

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