22
Q:

# Which of the following is a scalar quantity

 A) electric current B) electric field C) Acceleration D) linear momentum

Explanation:

A Scalar quantity is a quantity that has only magnitude but no direction as like vector.

Here in the given options, electric current is the only one which is scalar.

Subject: Physics
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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
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2 7000
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 6838
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 9211
Q:

'Torr' is a unit of _______.

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

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

6 6306
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

5 6654
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 7670
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 5369
Q:

Which of the following are Mechanical waves?

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