EASY
UPSC CAPF AC Paper - I
IMPORTANT
Earn 100

Match List I (Electromagnetic Wave) with List II (Discoverer) and select the correct answer using the codes given below
List I                        List II
A. Infrared waves      1. Ritter
B. Ultraviolet rays     2. Newton
C. X-rays                   3. Herchel
D. Visible rays           4. W.Roentgen

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Important Questions on Physics

EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 3>Q 44
A wave undergoes reflection from a rigid boundary. One of its characteristic parameters that changes is____________________.
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 3>Q 45
X-rays are used for the study of crystal structure because _____.
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 3>Q 46
An echo will be heard if the minimum distance between the source of the sound and the obstacle is _____.
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 3>Q 47
Which of the following types is used by Computed Tomography employed for visualisation of the internal structure of human body?
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 3>Q 48

Consider the following statements:

1. A flute of smaller length produces waves of lower frequency

2. Sound travels in rocks in the form of longitudinal elastic waves only

Which of the statements given above is/are correct?

EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 3>Q 49
Assertion (A): Radio waves bend in a magnetic field.
Reason (R): Radio waves are electromagnetic in nature. 
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 3>Q 50
The light wave is _____.
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 3>Q 51

The technique used to transmit audio signal in telivison broadcast is?