Physics - Study Mode

[#136] Rear view mirror of car is convex or concave?
Correct Answer

(A) Convex

Explanation

Solution: Rear view mirror of car is convex.

[#137] Which tube used to produce X-ray?
Correct Answer

(A) Coolidge tube

Explanation

Solution: Coolidge tube is used to produce X-ray.

[#138] A Fuse wire is characterised by
Correct Answer

(A) High resistance and low melting point

Explanation

Solution: Fuse is a piece of wire of a material with a very low melting point. When a high current flows through the circuit due to overloading or a short circuit, the wires gets heated and melts. As a result,the circuit is broken and current stops flowing.

[#139] When the main switch of the house is put off it disconnects the
Correct Answer

(C) Live wire and the neutral wire

Explanation

Solution: It disconnects the live and neutral wire.

[#140] Electric power is measured in units of
Correct Answer

(C) Watt

Explanation

Solution: Electricity is measured in Watts and kilowatts.