General Knowledge

Physics - Section 1

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Physics - Section 1

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9 Questions
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Question 71
Sir C.V. Raman was awarded Nobel Prize for his work connected with which of the following phenomenon of radiation?

A
Scattering
B
Diffraction
C
Interference
D
Polarization
Correct Answer: Option A

No answer description available for this question.

Question 72
In which of the following industries is mica as a raw material?

A
Cement
B
Glass and Pottery
C
Iron and Steel
D
Electrical
Correct Answer: Option D

No answer description available for this question.

Question 73
Radiocarbon dating technique is used to estimate the age of

A
rocks
B
monuments
C
soil
D
fossils
Correct Answer: Option D

No answer description available for this question.

Question 74
out of the following, which is not emitted by radioactive substance?

A
Electrons
B
Electromagnetic radiations
C
Alpha particles
D
Neutrons
Correct Answer: Option D

No answer description available for this question.

Question 75
Sound waves in air are

A
transverse
B
longitudinal
C
electromagnetic
D
polarised
Correct Answer: Option B

No answer description available for this question.

Question 76
Magnetism at the centre of a bar magnet is

A
minimum
B
maximum
C
zero
D
minimum or maximum
Correct Answer: Option C

No answer description available for this question.

Question 77
It is more difficult to walk on a sandy road than on a concrete road because

A
sand is soft and concreter is hard
B
the friction between sand and feet is less than that between concrete and feet
C
the friction between sand and feet is more than that between concrete and feet
D
the sand is grainy but concrete is smooth
Correct Answer: Option B

No answer description available for this question.

Question 78
Find the maximum velocity for the overturn of a car moving on a circular track of radius 100 m. The co-efficient of friction between the road and tyre is 0.2

A
0.14 m/s
B
140 m/s
C
1.4 km/s
D
14 m/s
Correct Answer: Option D

No answer description available for this question.

Question 79
Of the following properties of a wave, the one that is independent of the other is its

A
amplitude
B
velocity
C
wavelength
D
frequency
Correct Answer: Option A

No answer description available for this question.

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