Angle of friction and angle of repose are?

A. Equal to each other
B. Not equal to each other
C. Proportional to each other
D. None of these

Intensity of gravitational field of earth is maximum at?

A. Poles
B. Equator
C. Center of earth
D. Surface

A transformer works on the principle of _______________?

A. Self induction
B. Mutual induction
C. Generator
D. Inverter

Pluviometer measures ___________?

A. Wind
B. Strength of plywood
C. Rainfall
D. None of these

Atephobia is fear of _________?

A. Imperfection
B. Heights
C. Attitude
D. None of these

Male birds are ________ colorful than female birds.

A. Less
B. More
C. Equal
D. None of these

The scientist who first sent electromagnetic waves to distant places is?

A. James clerk maxwell
B. Heinrich hertz
C. Thomas alva edison
D. John logie baird

The period of revolution of a geostationary satellite is?

A. 365 days
B. 30 days
C. 24 hours
D. Changing continuously

The time period of a pendulum when taken to the Moon would?

A. Remain the same
B. Decrease
C. Become zero
D. Increase

Which type of reaction produces the most harmful radiation?

A. Fusion reaction
B. Fission reaction
C. Chemical reaction
D. Photo-chemical reaction