The Capacity of doing work is called _______ ?
A. Power
B. Momentum
C. Energy
D. Work
EVERYDAY SCIENCE
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What is the force of attraction between any two bodies by virtue of their masses is called ?
A. Gravitational Force
B. Nuclear Force
C. Electromagnetic Force
D. Centripetal Force
By how many times are the Electrostatic forces stronger than the Gravitational Forces for a fixed distance ?
A. 1012
B. 102
C. 1036
D. None of them
Rainbow is seen after rain because of hanging molecules of water which act as ______ ?
A. Prism
B. Slabs
C. Lens
D. Mirror
To measure the speed of an approaching car a police officer shines ?
A. radio waves on it
B. ultra high frequency waves on it
C. light waves on it
D. microwaves on it
A photostat machine works on ______ ?
A. thermal image making
B. electrostatic image making
C. electromagnetic image making
D. magnetic image making
The owl can see most clearly in total darkness because ;
A. it produces infrasonic sounds
B. it has large eyes with orbs directed forward, giving it binocular sight
C. it has squint eyes
D. it has light bulbs in its eyes provided by nature
Which of the following statements is true when we see ‘rainbow’?
A. In light rainfall, we face Sun
B. The sky remains clear and the sun is at lower position in the sky
C. We face sun and raindrops
D. The Sun remains behind us and we face raindrops
Why the needle of iron swims on water surface when it is kept gently?
A. due to surface tension
B. It will remain under the water, when it will displace more water than its weight
C. the density of needle is less than that of water
D. None of them
Which of the following are not deflected by electric and magnetic fields?
A. Gamma rays
B. Beta rays
C. Alpha rays
D. None of them