Units

Question 1

Unit of Spring constant (k)

Answer 1

Nm-1

Question 2

Unit of Angular frequency (w)

Answer 2

Rad s-1

Question 3

Unit of inertia (I)

Answer 3

Km m^2

Question 4

Unit of electric field strength?

Answer 4

N C-1

Question 5

What is the unit of apparent brightness?

Answer 5

W m-2

Question 6

Unit of angular momentum?

Answer 6

Kg m^2 s-1

Question 7

Unit of momentum?

Answer 7

Kg ms-1

Question 8

What is the correct scientific notation for Femtometers?

Answer 8

1 Femtometer = 1 x 10^-15

Question 9

Explain briefly why a particular thickness of zinc oxide coating (over glass) is non-reflecting for a specific wavelength of light.

Answer 9

A particular thickness will produce destructive interference of reflected waves for the specific wavelength of light.

Question 10

E=KA^2. What is the unit of amplitude in the context of electromagnetic waves? (Amplitude of electric field)

Answer 10

V m-1

Question 11

What is the correct scientific notation for picometers?

Answer 11

1x10^-12

Question 12

Unit of torque

Answer 12

Nm

Question 13

Unit of gravitational potential

Answer 13

J kg-1