Finger prints on a piece of paper may be detected by sprinkling fluorescent pow

Question

Finger prints on a piece of paper may be detected by sprinkling fluorescent
powder on the paper and then looking it into [MP PET/PMT 1988]

Options:

A . Mercury light

B . Sunlight

C . Infrared light

D . Ultraviolet light

Answer: Option D
:
D
Ultraviolet light

Was this answer helpful ?

Next Question

More Questions on This Topic :

Question 1. If an object is placed asymmetrically between two plane mirrors, inclined at 60∘, the total number of ....mirrors, inclined at 60∘, the total number of images formed is

Question 2. Finger prints on a piece of paper may be detected by sprinkling fluorescent powder on the paper and then looking it int....the paper and then looking it into [MP PET/PMT 1988]

Question 3. A plane mirror and a person are moving towards each other with same velocity v. Then the velocity of the image is....

Question 4. What should be the angle between two plane mirrors so that whatever be the angle of incidence, the incident ray and the ....ray from the two mirrors be parallel to each other

Question 5. A thick plane mirror shows a number of images of the filament of an electric bulb. Of these, the brightest image is the�....an electric bulb. Of these, the brightest image is the

Question 6. A small plane mirror placed at the centre of a spherical screen of radius R. A beam of light is falling on the mirror. I....on the screen after reflection from the mirror will be

Question 7. A plane mirror is approaching you at a speed of 10 cm/sec You can see your image in it. At what speed will your image a....in it. At what speed will your image approach you

Question 8. A watch shows time as 3 : 25 when seen through a mirror, time appeared will be....

Question 9. A convex lens of crown glass ( =1.525) will behave as a divergent lens if immersed in....

Question 10. A converging lens is used to form an image on a screen. When upper half of the lens is covered by an opaque screen ....half of the lens is covered by an opaque screen

Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)

Direction Sense Test Part 1 Reasoning (Hindi)

Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE

Cube & Cuboid Part 1 Reasoning (Hindi)

Data Interpretation (DI) Basic Concept Reasoning (Hindi)

Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)

Sail E0 free webinar Webinars

Real Numbers Part 7 Class 10 Maths

Real Numbers Part 1 Class 10 Maths

Polynomials Part 1 Class 10 Maths

DSP Combined 1 Free Revision Test SAIL JO E-0

GPOE / GPA Combined 1 Free Revision Test SAIL JO E-0

BSP Plant Specific Review Test SAIL JO E-0

BSL Combined 1 Free Revision Test SAIL JO E-0

GFM Combined 1 Free Revision Test SAIL JO E-0