Sound — Physics STD 10 — Question

A fuse wire is connected in___________ before the switch.

The centre of gravity of the body changes, if it is

Uniform linear motion has _____________ .

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?

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

The mechanical advantage of a machine is equal to the product of its efficiency and:

A ray of light incident on a lens parallel to its principal axis, after refraction passes through or appears to come from : ________ .

Which lens is thicker in the middle and thinner at its periphery?

The amount of work done (energy spent) in moving a unit positive charge from one point to another point in an electric field is called:

Stars appear to twinkle while planets don't because: