Current Electricity — Physics STD 10 — Question

A lens forms an erect, magnified and virtual image of an object.Draw a ray diagram to show the formation of image.

What is the effect on the atomic mass and the atomic number of a radioactive element, after the emission of an α-particle?

What do you understand by the term energy? Is energy a scalar or vector? How is the energy possessed by a body measured?

A uniform half-metre rule can be balanced at the 29.0 cm mark when a mass of 20 g is hung from its one end.

1. Draw a diagram of the arrangement.
2. Find the mass of the half-metre rule.
3. In which direction would the balancing point shift if 20 g mass is shifted inside from its one end?

Briefly describe an experiment to show that a prism itself produces no colour, during disperssion of white light.

Arrange α, β, and γ rays in ascending order with respect to their1) Penetrating power.
2) Ionising power
3) Biological effect

A bullet fired against a window glass pane makes a hole in it without any cracks while a stone striking the same glass pane smashes it; explain with reason.

Two bodies A and B of masses m and M (M≫ m) have same kinetic energy. Which body will have more momentum?

Plot a graph between
Sine of angle of incidence versus sine of angle of refraction,