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RRB JE 2019 | Day 16| Physics Quiz 3

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Question 1

Which of the following waves are used to communicate with satellites?

Question 2

A man inside an artificial satellite feels weightlessness because the force of attraction due to earth is

Question 3

The dimensional formula for universal gravitational constant is

Question 4

Specific gravity is defined as the ratio of

Question 5

The value of acceleration due to gravity (g) at a distance of 2R from the surface of earth, where R is the radius of earth is __________.

Question 6

What is the reason behind variation of acceleration due to gravity?

Question 7

Which electromagnetic radiation is used for satellite communication?

Question 8

Acceleration is

Question 9

Diopter is used for 

Question 10

Which type of friction occurs when ball bearings are used to slide a body?
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Feb 8ESE & GATE EC