RRB GROUP D Physics Quiz - 68

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Question 1:

Dynamo is a device which –

Question 2:

The intensity of light produced by an unknown source in terms of a standard source is measured by which instrument?

Question 3:

Scattering is not the reason for which of the following phenomenon?

Question 4:

The direction of magnetic field around a current carrying metallic wire is given by- 

Question 5:

Find the initial volume of a gas at 100 K, if the final volume is 5 L at 50 K

Question 6:

An electric iron of resistance 20 ohms draws a current of 5 amperes. Calculate the heat produced in 30 seconds.

Question 7:

The dimensional formula for universal gravitational constant is -

Question 8:

Refraction of light , as it enters from one transparent medium to another , is due to

Question 9:

Which of the following is a non-dimensional quantity?

Question 10:

Transmission of heat in solids takes place through –