31. The wavelength of the matter waves is independent of

1. 1. Charge

   
   
   

   2. Momentum

   
   
   

   3. Velocity

   
   
   

   4. Mass

   
   
   

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   NA

   Correct Option: A

   NA

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32. If alpha, beta and gamma rays carry same momentum, which has the longest wavelength ?

1. 1. Alpha rays

   
   
   

   2. Beta rays

   
   
   

   3. Gamma rays

   
   
   

   4. None, all have same wavelength

   
   
   

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   NA

   Correct Option: D

   NA

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33. Einstein's mass energy relation is given by the expression

1. 1. E = 1 / 2 mv²

   
   
   

   2. E = mc²

   
   
   

   3. E = mgh

   
   
   

   4. none of these

   
   
   

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   NA

   Correct Option: B

   NA

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34. Curie is a unit of

1. 1. Energy of gamma rays

   
   
   

   2. Half-life

   
   
   

   3. Intensity of gamma rays

   
   
   

   4. Radioactivity

   
   
   

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   NA

   Correct Option: D

   NA

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35. Which of the following statement is correct ?

1. 1. Two isobars always have the same mass number

   
   
   

   2. Two isotopes always have the same mass number

   
   
   

   3. Two isotones always have the same mass number

   
   
   

   4. Two isobars always have same atomic number

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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