A bulb marked 240V, 40W is used for 30 minutes. Calculate...
A bulb marked 240V, 40W is used for 30 minutes. Calculate the heat generated
320J
400J
10800J
72000J
Correct answer is D
W = P x t = 40 x 30 x 60 = 72000J
Calculate the critical angle for light traveling from water to air. (Refractive index of water = 1.3...
A hydraulic press has a large circular piston of radius 0.8m and a circular plunger of radius 0.2m. ...
A transformer with 5500 turns in its primary winding is used between a 240V a.c supply and 120V kett...
According to the kinetic theory of gasses, which of the following property of a gas can be affected ...
The mode of transference of heat which does not require any material medium is ...
The motion of the wheel of a bicycle moving on a smooth straight road is ...
Which of the following is/are not true about the heat capacity of a substance? (i) It is an intensi...
Two long parallel wires X and Y carry currents 3A and 5A each. if the force experienced by unit leng...
A man whose mass is 80kg climbs a staircase in 20s and expends power of 120W. Find the height of the...
A negatively charged rod is brought near the cap of an electroscope. The cap is earthed momentarily ...
Verbal Reasoning Questions and Answers
Personality Test
Quantitative Reasoning Questions and Answers
Data Interpretation Questions and Answers
Puzzles Questions and Answers
Typing Speed and Accuracy Test
Numerical Reasoning Questions and Answers
Nigeria General Knowledge Questions and Answers
Abstract Reasoning Questions and Answers
Logical Reasoning Questions and Answers
Spatial Reasoning Questions and Answers
Microsoft Office Questions and Answers
Situational Judgement Questions and Answers
See all →