हिंदी

Two Waves a and B Have Wavelength 0.01 å and 9000 å Respectively. Name the Two Waves. Compare the Speeds of These Waves When They Travel in Vacuum.

Advertisements
Advertisements

प्रश्न

Two waves A and B have wavelength 0.01 Å and 9000 Å respectively.

Name the two waves. compare the speeds of these waves when they travel in vacuum.

एक पंक्ति में उत्तर
Advertisements

उत्तर

Waves A are Gamma radiations.
Waves B are infrared radiations.
In vacuum, both travel with the same speed. Hence, the ratio of their speeds is 1:1.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 2: Light - Exercise 7 [पृष्ठ ११८]

APPEARS IN

फ्रैंक Physics Part 2 [English] Class 10 ICSE
अध्याय 2 Light
Exercise 7 | Q 3 | पृष्ठ ११८

संबंधित प्रश्न

If the earth did not have atmosphere, would its average surface temperature be higher or lower than what it is now? Explain.


Name the region beyond the violet end of the spectrum called.


Can X-rays be used for photoelectric effect?


The energy of a silver atom with a vacancy in K shell is 25.31 keV, in L shell is 3.56 keV and in M shell is 0.530 keV higher than the energy of the atom with no vacancy. Find the frequency of Kα, Kβ and Lα X-rays of silver.

(Use Planck constant h = 6.63 × 10-34 Js= 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)


When 40 kV is applied across an X-ray tube, X-ray is obtained with a maximum frequency of 9.7 × 1018 Hz. Calculate the value of Planck constant from these data.

(Use Planck constant h = 6.63 × 10-34 Js= 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)


Name the part of the electromagnetic spectrum which is: 
Produced by bombarding a metal target with high electrons.


The frequency of x-rays, y-rays and ultraviolet rays are respectively a, b and c. Then:-


Electromagnetic waves with wavelength

  1. λ1 is used in satellite communication.
  2. λ2 is used to kill germs in water purifies.
  3. λ3 is used to detect leakage of oil in underground pipelines.
  4. λ4 is used to improve visibility in runways during fog and mist conditions.
  1. Identify and name the part of electromagnetic spectrum to which these radiations belong.
  2. Arrange these wavelengths in ascending order of their magnitude.
  3. Write one more application of each.

Below is an incomplete table showing the arrangement of electromagnetic spectrum in the increasing order of their wavelength. Complete the table:

Gamma ray X - ray UV rays Visible rays Infrared A Radio waves
  1. Identify the radiation A.
  2. Name the radiation used to detect fracture in bones.
  3. Name one property common to both A and Radio waves.

What is the wavelength range of electromagnetic radiation used in radio broadcast?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×