The rest mass of photon is:(15)(16) Strong nuclear force exists between:A. Hadrons ⃝ B. Photons ⃝B. Leptons ⃝ D. Muons ⃝(17) The half-life of a radioactive element which has only 1 of its original mass leftafter elapsed of 60 days is:A. 30 days ⃝ B. 20 days ⃝C. 15 days ⃝ D. 12 days ⃝Page 2 of 2A.C.LargeZero⃝⃝B.D.SmallInfinite⃝⃝The peak value of A.C source is 20 A, its rms value will be:A. 14.1 A ⃝ B. 10 A ⃝C. 20 A ⃝ D. 28.2 A ⃝The materials in which disordered structure of liquid is frozen are:A. Amorphous ⃝ B. Crystalline ⃝C. Polycrystalline ⃝ D. Quartz ⃝A. Infinite ⃝ B. Zero ⃝C. 1. 6 1027 kg ⃝ D. 3 108 kg ⃝The type of spectra produced by atoms is:A. Continuous spectra ⃝ B. Band spectra ⃝C. Line spectra ⃝ D. Braking radiation spectra ⃝FBISE
Question
The rest mass of photon is:(15)(16) Strong nuclear force exists between:A. Hadrons ⃝ B. Photons ⃝B. Leptons ⃝ D. Muons ⃝(17) The half-life of a radioactive element which has only 1 of its original mass leftafter elapsed of 60 days is:A. 30 days ⃝ B. 20 days ⃝C. 15 days ⃝ D. 12 days ⃝Page 2 of 2A.C.LargeZero⃝⃝B.D.SmallInfinite⃝⃝The peak value of A.C source is 20 A, its rms value will be:A. 14.1 A ⃝ B. 10 A ⃝C. 20 A ⃝ D. 28.2 A ⃝The materials in which disordered structure of liquid is frozen are:A. Amorphous ⃝ B. Crystalline ⃝C. Polycrystalline ⃝ D. Quartz ⃝A. Infinite ⃝ B. Zero ⃝C. 1. 6 1027 kg ⃝ D. 3 108 kg ⃝The type of spectra produced by atoms is:A. Continuous spectra ⃝ B. Band spectra ⃝C. Line spectra ⃝ D. Braking radiation spectra ⃝FBISE
Solution
Sure, here are the answers to your questions:
(15) The rest mass of a photon is: B. Zero
(16) Strong nuclear force exists between: A. Hadrons
(17) The half-life of a radioactive element which has only 1 of its original mass left after elapsed of 60 days is: A. 30 days
The peak value of A.C source is 20 A, its rms value will be: A. 14.1 A
The materials in which disordered structure of liquid is frozen are: A. Amorphous
The type of spectra produced by atoms is: C. Line spectra
Please note that these answers are based on standard physics knowledge and the actual answers may vary depending on the context of the questions.
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