Spectrum — Physics STD 10 — Question

The specific resistance of a conductor depends on its:

There are 2 rooms, A and B in a house, Each room has 2 lights and 2 fans. It was found that when in roon A one light fuses, the other appliances continue to glow, whereas for room B when one light fures, the other appliances also stops to operate. Which of the following is responsible for this?

The point of action of force on a rigid body is

In a three pin plug the live pin is:

Which is not the use of an electromagnet?

A radioactive substance emits radiations:

When a ray of light enters from a denser medium to a rarer medium then:

Consider the following picture on Fleming's right hand rule of electromagnetic induction:

(i) What the direction 1 and 2 indicates?

The graph between V and I for a conductor is a straight line. The slope of the graph represents:

A force of 50 N produces a moment of force of 10 Nm in a rigid body. The perpendicular distance between the point of application of force and the turning point is