PART - 1 CH - 3 Motion in a Plane — Physics STD 11 Science — Question

Which is the most accurate clock?

If the ice on the polar caps of the earth melts, how will it affect the duration of the day? Explain.

A ladder is at rest with its upper end against a wall and the lower end on the ground. Is the ladder more likely to slip, when a man stands on it at the bottom or at the top? Give reason.

In a dispersive medium, how will you express the velocity of wave motion?

If all measurements in an experiment are taken upto same number of significant figures, then which measurement is responsible for maximum error?

The dimensional formula M¹L²T^-2 represents which physical quantities?

Where does the pressure of larger magnitude exist at nodes or at antinodes?

A black metal foil is warmed by radiation from a sphere at temperature T at a distance d. If the power received is P, find the power received when both the temperature and distance are doubled.

Write the formula for frequency of a simple pendulum.

Can the value of resultant vector of two vectors be less than the value of any one of the given vectors?