Physics - Study Mode

[#311] What is the escape velocity of the rocket in the earth?
Correct Answer

(D) 11.2 km/sec

Explanation

Solution: The escape velocity of the rocket in the earth is 11.2 km/sec.

[#312] The coil wire in the electric room heater or electric cooking heater is called ________
Correct Answer

(B) Element

Explanation

Solution: The coil wire in the electric room heater or electric cooking heater is called element.

[#313] The composition of electrician solder is
Correct Answer

(A) Lead-37%, tin-63%

Explanation

Solution: The composition of electrician solder is Lead-37%, tin-63%.

[#314] An electric iron of 750 W is used for 8 hours per day. Then the energy consumed in one day by the iron is:
Correct Answer

(A) 6 units

[#315] The purpose of choke in tube light is
Correct Answer

(A) Induce high voltage

Explanation

Solution: When the switch is ON, in a tube light choke is nothing but the coil/ballast (inductor) which is used to induce the high voltage across it.