General Knowledge

Physics - Section 2

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Physics - Section 2

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Welcome to Online General Knowledge section in LearnFrenzy, which is important for SSC, UPSC, Civil Service exams and other competitive exams. We have created Some questions related to General Science(Physics) !!!

Question 21
Water stored in a dam possesses which energy ?

A
Electrical Energy
B
Potential energy
C
Kinetic energy
D
Solar Energy
E
None of these
Correct Answer: Option C

Water stored in a dam possesses (d) potential energy and once the water is falling it has kinetic energy.

Question 22
Which of the following is related to illumination ?

A
Birch’s law
B
Lambert’s law
C
Archie’s law
D
Darcy’s law
E
None of these
Correct Answer: Option B

In optics, Lambert’s cosine law says that the radiant intensity or luminous intensity observed from an ideal diffusely reflecting surface or ideal diffuse radiator is directly proportional to the cosine of the angle θ between the observer’s line of sight and the surface normal.

Question 23
Which of the following proved the presence of nucleus in an atom ?

A
Rutherford’s Refraction experiment
B
Rutherford’s scattering experiment
C
Rutherford’s Reflection experiment
D
All of these
E
None of these
Correct Answer: Option B

Rutherford’s scattering experiment proved the presence of nucleus in an atom. Rutherford scattering is the elastic scattering of charged particles by the Coulomb interaction

Question 24
Shock absorbers are usually made of steel as it has ………………..

A
High
B
Low elasticity
C
Low rigidity
D
High elasticity
E
None of these
Correct Answer: Option D

A shock absorber (in reality, a shock “damper”) is a mechanical or hydraulic device designed to absorb and damp shock impulses. It does this by converting the kinetic energy of the shock into another form of energy (typically heat) which is then dissipated.

Question 25
The time period of a pendulum …………………. When it will taken to the moon

A
Increases
B
No change
C
Decreases
D
Increases and then decreases
E
None of these
Correct Answer: Option A

The time period of a pendulum increases when it will taken to the moon time period will increase because the frequency will decrease on the Moon.

Question 26
Persistence of Vision is responsible for the working of Newton’s which of the following ?

A
Colour disc experiment
B
Theory of light
C
Prism Experiment
D
Colour Wheel Experiment
E
None of these
Correct Answer: Option A

A Newton disc, invented by Isaac Newton, is a disc with seven segments in rainbow colours. When the disc is rotated, the colors fade to white; In this way Isaac Newton demonstrated that white light is a combination of the seven different colours found in a rainbow. A Newton Disc can be created by painting a disc with the seven different colours. A combination of red, green and blue in the circular disc will yield the same result. This is due to the phenomenon called persistence of vision.

Question 27
The Nuclear Force is short range …………….

A
Attractive Force
B
Repulsive Force
C
Either Attractive or Repulsive force
D
Electrostatic force
E
None of these
Correct Answer: Option A

The nuclear force is a residual effect of the more fundamental strong force, or strong interaction. The strong interaction is the attractive force that binds the elementary particles called quarks together to form the nucleons themselves. The strong nuclear force has a range of about 1 fm.

Question 28
…………….. are first recorded by Seismograph

A
M-Waves
B
S-Waves
C
L-Waves
D
P-Waves
E
None of these
Correct Answer: Option D

Seismology is the study of earthquakes and seismic waves that move through and around the earth.The first kind of body wave is the P wave or primary wave.

Question 29
Bragg spectrometer is one of the important method for studying crystals using

A
γ rays
B
X-rays
C
β rays
D
α rays
E
None of these
Correct Answer: Option B

Bragg’s spectrometer method is one of the important method for studying crystals using X-rays. The apparatus consists of a X-ray tube from which a narrow b.

Question 30
1 Slung = ?

A
16.4kg
B
14.6kg
C
15kg
D
13.6 kg
E
None of these
Correct Answer: Option B

A unit of measure for mass in the English system, which equals 14.6 kg in the SI system.