Miscellaneous In Mining - Study Mode

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[#76] When light falls upon a surface, part of its reflected and part absorbed called.

(A) Refraction

(B) Contraction

(C) Reflection

(D) Conversion

Correct Answer

(C) Reflection

[#77] The gasses exit by . . . . . . . . holes in the front of the old ham battery.

(A) Inlet

(B) Exit

(C) Vent

(D) None

Correct Answer

(C) Vent

[#78] The intensity of light measured by . . . . . . . .

(A) Candles

(B) Lux

(C) Lumen

(D) All of these

Correct Answer

(A) Candles

[#79] Modern incandescent lamps have luminous efficiency is from . . . . . . . .

(A) 5 - 8

(B) 8 - 10

(C) 12 - 15

(D) 10 - 20

Correct Answer

(D) 10 - 20

[#80] Provision of stone dust barrier has been given in which of the following circulars.

(A) 3/1975

(B) 1975

(C) 5/1975

(D) 6/1975

Correct Answer

(D) 6/1975