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Spectrum Physics - Spectrum

ICSE - STD 10 - Physics (ICSE - English Medium). 101 questions in this chapter.

Question types

Spectrum question types

101 questions across 5 question groups — pick any mix to generate a Physics paper with step-by-step answer keys.

101
Questions
5
Question groups
5
Question types
Sample Questions

Spectrum questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 15[3 Mark Question Answer]3 Marks
The frequency range of visible light is from $3.75 \times 10^{14} Hz \rightarrow 7.5 x 10^{14} Hz$ Calculate its wavelength range. Take speed of light $=3 \times 10^8 m / s ^{-1}$
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Q 21MCQ1 Mark
In white light of sun, maximum scattering by the air molecular present in the earth’s atmosphere is for :
  • A
    Red colour
  • B
    Yellow colour
  • C
    Green colour
  • ✓
    Blue colour

Answer: D.

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Q 22MCQ1 Mark
A radiations A is focused by a proper device on the bulb of a thermometer. Mercury in the thermometer shows a rapid increase. The radiations A is : ________ .
  • ✓
    Infrared radiation
  • B
    Visible light
  • C
    Ultra-violet radiation
  • D
    X-rays

Answer: A.

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Q 23MCQ1 Mark
The source of ultraviolet light is : ________ .
  • A
    Electric bulb
  • B
    Red hot iron ball
  • C
    Sodium vapour lamp
  • ✓
    Carbon arc-lamp

Answer: D.

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Q 24MCQ1 Mark
The most energetic electromagnetic radiations are : ________ .
  • A
    Microwaves
  • B
    Ultraviolet waves
  • C
    X-rays
  • ✓
    Gamma rays

Answer: D.

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