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

Related Mcqs:

1. A piece of copper and a piece of germanium are cooled from the room temperature down to 77 K.

   A. The resistance of each of them increases.
   B. The resistance of each of them decreases.
   C. The resistance of copper decreases and that of germanium increases.
   D. The resistance of copper increases and that of germanium decreases

   Submitted by: Tauseef Ali

2. What is wavelength of visible spectrum?

   A. 8500 – 9800 angstrom
   B. 7800 – 8000 angstrom
   C. 3900 – 7600 angstrom
   D. 1300 – 3000 angstrom

   Submitted by: Engr Allah Wadhayo

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. Intensity level of threshold of pain is: _____________?

   A. 60 db
   B. 80 db
   C. 100 db
   D. 120 db

   Submitted by: Rizwan Ayub Saadi

5. When collision between the bodies in a system is inelastic in nature then for system ____________________?

   A. momentum changes but K.E remain conserve
   B. K.E changes but momentum remain conserve
   C. both momentum and K.E changes
   D. both momentum and K.E remain conserve

6. On loading the prong of a tuning form with wax its frequency____________________?

   A. increases
   B. decreases
   C. remains unchanged
   D. may increase or decrease

7. When same current passes for same time through a thick and thin wire_________________?

   A. more heat is produced in thick wire
   B. more heat is produced in thin wire
   C. no heat is produced in wire
   D. less heat is produced in thick wire

8. In the shadow of a ball the central portion appears bright that happens due to_________________?

   A. Interference
   B. Diffraction
   C. Polarization
   D. Refraction

9. The light used in optical fiber transmission is________?

   A. Dichromatic
   B. Monochromatic
   C. Pentachromatic
   D. None of these

   Submitted by: Raza Baloch

10. Addition of vectors obeys_______law?

    A. Commutative Law
    B. Associative Law
    C. Distributive Law
    D. All of these

    Submitted by: Zahid Jagirani