Intensity level of threshold of pain is: _____________?

Related Mcqs:

1. In a photoelectric effect monochromatic light is incident on a metal surface. If the incident light of twice the intensity but of same wavelength the kinetic energy of the emitted electron_______________?

   A. Becomes double
   B. Remains same
   C. Becomes half
   D. First increases then decrease because of the curvilinear graph

2. Length, mass, time, intensity of light and amount of substance are examples of ____________?

   A. Base quantities
   B. Derived quantities
   C. Prefixes
   D. Quartile quantities

   Submitted by: Shabana

3. If we look at the floating piece of iceberg on the sea, approximately what fraction of it is visible above the seawater level?

   A. 1/6th
   B. 1/8th
   C. 1/10th
   D. None of these

   Submitted by: Nayab Idrees

4. The speed of sound in hydrogen is _____________ time than that in oxygen?

   A. Two times
   B. Three times
   C. Four time
   D. Six time

5. Which one is the derived quantity in SI units _____________?

   A. Electric current
   B. Electric charge
   C. Plane angle
   D. Amount of substance

6. In optic fiber transmission system _____________ are used regenerate the dim light signal?

   A. Diodes
   B. Repeaters
   C. Laser
   D. Transformer

7. The audio signals of TV are _____________?

   A. Amplitude modulated
   B. Frequency modulated
   C. fixe modulated
   D. Velocity modulated

   Submitted by: Abid Hussain

8. A photostat machine works on _____________?

   A. electromagnetic image making
   B. magnetic image making
   C. thermal image making
   D. electrostatic image making

   Submitted by: Abid Hussain

9. Unit vector is used to specify the _____________?

   A. Magnitude
   B. Velocity
   C. Direction of vector
   D. Frequency

   Submitted by: Chakar Hussain Shar

10. Study of sound is called _____________?

    A. Soundlogy
    B. Acoustics
    C. Neurology
    D. Physiology

    Submitted by: Ali Sher