Sound — Physics STD 10 — Question

How much work is done when 5 C charge moves across a p.d. of 1 V?

How will rise in sea level affect population in coastal countries?

Can a transformer work when it is connected to a D.C. source? Give a reason.

What is the velocity ratio of a single movable pulley ? How does the friction in the pulley bearing affect it?

What do you understand by mechanical energy?

Show the path of a ray of light when it travels from air into water, the angle of incidence being 30°. Mark the angle of incidence and the corresponding angle of refraction.

In the following cases, where must an object be placed in front of a convex lens so that the image formed is inverted and enlarged .

Define calorimetry ?

When does a machine act as a speed multiplier ?

Arrange the speeds of sound in gases, solids, and liquids in ascending order.