The equation θ = 1.22 λ/D was devised by_______________?

Related Mcqs:

1. Michelson devised the formula to calculate the speed of light_______________?

   A. C = 4fd
   B. C = 8fd
   C. C = 16fd
   D. C = 5/2fd

2. Einstein’s photoelectric equation is given by_______________?

   A. 1/2 mvmax2=hf+Φ
   B. 1/2 mvmax2-hf = Φ
   C. 1/2 mvmax2=hf-Φ
   D. All of above are correct

3. An alternating current is represented by the equation I = I∫sinπt which of the following equation represents an alternating current of frequency and amplitude twice that of the above current ?

   A. I = 2I∫Sin(πt/2)
   B. I = 2I∫Sin(2πt)
   C. I = 2ISinπt
   D. I = I∫sin(2πt)

4. The velocity of light was determined accurately by_______________?

   A. Newton
   B. Michelson
   C. Huygen
   D. Young

5. The direction of a vector in space is specified by_______________?

   A. One angle
   B. Two angle
   C. Three angle
   D. No angle

6. Random errors can be reduced by_______________?

   A. Taking zero correction
   B. Comparing the instrument with another more accurate one
   C. Taking mean of several measurements
   D. All methods explained in A, B and C

7. The period of a circular motion is given by_______________?

   A. T = πv
   B. T = πw
   C. T = 2πr
   D. T = 2πr/v

8. The restoring force acting on the simple pendulum is given by_______________?

   A. mg sin θ
   B. mg sin θ
   C. mg cos θ
   D. mg cos θ

9. The relativistic energy E is equivalent to relativistic mass given by_______________?

   A. Ec2
   B. E/c2
   C. E/c
   D. c2/E

10. In He-Ne laser the lasing action is produced by_______________?

    A. Ne only
    B. He-Ne both
    C. Electrons of He
    D. Electrons Ne