1
Q:

# Why does the sea appear blue in colour?

 A) Reflection of the sun light from water surface B) Interference of the sun light from water surface C) Scattering of the sunlight by water molecules D) refraction of the sun light

Answer:   C) Scattering of the sunlight by water molecules

Explanation:

Sea appears blue in colour due to the scattering of the rays when they hit water molecules

Subject: Physics
Q:

If the velocity of a body is doubled its momentum ________________.

 A) remains same B) doubles C) becomes half D) becomes 4 times

Explanation:

Filed Under: Physics
Exam Prep: AIEEE , Bank Exams

2 3097
Q:

A body of mass 8 kg is moving with a velocity of 4 m/s, find its momentum.

 A) 2 B) 64 C) 32 D) 4

Explanation:

Filed Under: Physics
Exam Prep: AIEEE , Bank Exams

0 3283
Q:

Ozone at the higher level of the atmosphere is a product of ______ acting on oxygen molecules.

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

1 5302
Q:

'Torr' is a unit of _______.

 A) force B) energy C) power D) pressure

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

6 4118
Q:

What is the velocity of sound in air?

 A) 343 m/sec B) 110 m/sec C) 220 m/sec D) 232 m/sec

Explanation:

Filed Under: Physics
Exam Prep: AIEEE , Bank Exams

4 3792
Q:

The power of a lens is —2.5 D. The type of lens and its focal length are respectively:

 A) Convex, -0.40 m B) Concave, -0.40 m C) Concave, 0.40 m D) Convex, 0.40 m

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

0 3895
Q:

Which one of the following is the unit of force?

 A) Pascal B) Watt C) Joule D) Newton

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

0 3327
Q:

Which of the following are Mechanical waves?

 A) X rays B) Radio waves C) Microwaves D) Sound waves