Physics Multiple Choice Questions and Answers - 1

Question: 1

How is the pressure cooker works?

(A) Steam inside the cooker makes food to cook with ease

(B) High pressure inside the cooker rises the boiling point of water

(C) Low pressure inside the cooker rises the boiling point of water

(D) Heat cannot escapes from the cooker

Ans: B

High pressure inside the cooker rises the boiling point of water

Question: 2

The angular speed of a whirlwind in a tornado towards the centre

(A) slowly becomes zero 

(B) decreases rapidly

(C) remains constant

(D) increases

Ans: D

increases

Question: 3

The most familiar form of radiant energy in sunlight that cause tanning and has the potential for causing melanoma in humans is called

(A) Visible radiation

(B) Infra red radiation

(C) Ultra violet radiation

(D) Microwave radiation

Ans: C

Ultra violet radiation

Question: 4

The magnetic needle always points in _____  direction.

(A) North- East

(B) North-South

(C) West-South

(D) East-West

Ans: B

North-South

Question: 5

Light year is

(A) Light emitted by the sun in one year

(B) Time taken by light to travel from sun to earth

(C) The distance travelled by light in free space in one year

(D) Time taken by earth to go once around the sun

Ans: C

The distance travelled by light in free space in one year

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