Physics MCQs for NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc. Part 12
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Question:
The distance between a point source of light and a screen is doublet. The intensity of light on the screen will be
- Four times the original value
- Half of the original value
- Two times the original value
- One quarter the original value.
Question:
From the following which one is used for studying ultra violet light?
- Prism of crown glass
- Prism of flint glass
- Prism of quartz
- Prism with combination & flint and crown glass
Question:
Electromagnetic waves are
- Longitudinal waves
- Transverse waves
- Neither longitudinal nor transverse
- Stationary waves
Question:
If there are no atmosphere the average temperature on the surface of the earth would be
- Lower
- Higher
- Same as now
Question:
Displacement current was first produced by
- Ampere
- Henry
- Maxwell
- Base
Question:
Pick out the odd one which has extremely short wave length much shorter than that of visible light and can be emitted from the nucleus of an atom.
- UV radiation
- β radiation
- γ radiation
- Infrared radiation
Question:
The TV transmission tower in Delhi has a height of . The distance up to when the broadcast can be received [taking radius of earth to be ]
Question:
All the members of electromagnetic spectrum have same
- Frequency
- Velocity
- Wave length
- Wave number
Question:
Infrared spectrum lies between
- Radio and micro wave region
- Visible and UV region
- Micro wave and visible region
- UV and X-ray region
Question:
Choose the waves relevant to telecommunications.
- Ultra violet
- Visible
- Infra-red
- Micro waves