# Physics Objective Questions For Competitive Exams

## Physics Most Frequently asked Questions

Physics – 3

Learn Physics Objective Questions For Competitive Exams | IBPS | RRB’s | Group 1 2 3

Q) Study of vision

Speconlogy

Opthnology

Opthicology

Opthnology

Q) According to Newton Corpuscular theory, light particles move with high speed through

denser medium and less speed in rare medium

rare medium and less speed in denser medium

both medium

denser medium and less speed in rare medium

Q) According to Huygens’s wave theory, light propagates in the form of

Electromagnetic waves

Mechanical waves

Transverse waves

Mechanical waves

Q) Lights wave are

Mechanical waves

Electromagnetic waves

Transverse waves

Electromagnetic waves

Q) Quantum theory of radiation is proposed by

Newton

Max planck

Galileo

Max planck

Q) Properties of Light

Refraction

Reflection

All the above

All the above

Q) Speed of light, determined by

Galileo

Foucault

Newton

Foucault

Q) Time taken by the light rays to reach the Earth is

8.5 mins

8.4 mins

8.2 mins

8.2 mins

Q) Time taken by light rays to travel from the surface of the moon to the Earth

1.36 secs

1.27 secs

1.47 secs

1.27 secs

Q) Speed of the light

Min in Diamond and Max in Air

Min in Air and Max in Diamond

Min in Diamond and Max in Water

Min in Diamond and Max in Air

Q) Raman effect is based on

Q) Light year means

Distance traveled by beam of light in month

Distance traveled by beam of light in year

Distance traveled by beam of laser light in year

Distance traveled by beam of light in year

Q) One light year means

9.4×10¹² km

9.4×10¹⁴ km

9.4×10¹⁷ km

9.4×10¹² km

Q) Smallest unit to measure either distance or length,Fermi

1 Fermi = 10⁻¹⁵ m

1 Fermi = 10⁻¹¹ m

1 Fermi = 10⁻¹² m

1 Fermi = 10⁻¹² m

Q) Paralastic second, unit to measure the separation distance between any two stars

1 Par sec= 3.26 light year

1 Par sec= 1.26 light year

1 Par sec= 2.26 light year

1 Par sec= 3.26 light year

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