SATHEE: Optics Question 243

Optics Question 243

Question: A star emits light of $5500 A A$ wavelength. Its appears blue to an observer on the earth, it means

[DPMT 2002]

Options:

A) Star is going away from the earth

B) Star is stationary

C) Star is coming towards earth

D) None of the above

Show Answer

Answer:

Correct Answer: C

Solution:

Blue radiations have the wavelength around 4600 $\overset{o}{A}$ . It shows that apparent wavelength is smaller than the real wavelength. It means that the star is proceeding towards earth.

Optics Question 243

Question: A star emits light of $5500 A A$ wavelength. Its appears blue to an observer on the earth, it means

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

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Sample Mock Test

Mentorship

NCERT Exercise Video Solution

Optics Question 243

Question: A star emits light of 5500AA wavelength. Its appears blue to an observer on the earth, it means

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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Question: A star emits light of $5500 A A$ wavelength. Its appears blue to an observer on the earth, it means