![The energy associated with the emitted photon when a mercury atom changes from one state to another is 3.3 ev. calculate the frequency of the photon. [e = 1.6 x 10^-19c; h = 6.6 x 10^-13js]](https://erudites.ng/wp-content/uploads/2020/06/past-questions-and-answers.jpg)
by Sunday | Nov 12 | Physics JAMB
A. 1.3 x 10-15 Hz B. 3.1 x 1052 Hz C. 3.2 x 10-53 Hz D. 8.0 x 1014 Hz Correct Answer: Option D = 8.0 x 1014 Hz Explanation E = hf f = (E)/h ∴ f = (3.3 x 1.6 x 10-19)/6.6 x 10-34 = 0.8 x 1015 = 8.0 x...
by Sunday | Nov 12 | Physics JAMB
I. Work done by load is always less than the work done by effort. II. All machines are made of levers, pulleys, screws and gear wheels. III. A fishing rod is a machine. Iv. Effort is always larger than load. A. II and III B. III and IV C. I and III D. II and iv...
by Sunday | Nov 12 | Physics JAMB
A. kg m3 s-2 B. kg m2 s-2 C. kg m-3 s-2 D. kg m-1 s-2 Correct Answer: Option D = kg m-1 s-2
by Sunday | Nov 12 | Physics JAMB
A. X and Y are in opposite directions to each other B. X is at an angle of 45° to Y C. X is perpendicular to Y D. X and Y are parallel to each other Correct Answer: Option D = X and Y are parallel to each other
by Sunday | Nov 12 | Physics JAMB
A. 1.13 x 104 ms-1 B. 9.00 x 103 ms-1 C. 8.00 x 103 ms-1 D. 1.27 x 104 ms-1 Correct Answer: Option A = 1.13 x 104 ms-1 Explanation Vesc = √2Rg. =√2 x 6.4 x 106 x 10 = 1.13 x 104 ms-1
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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