SSC (English Medium) 10th Standard - Maharashtra State Board Question Bank Solutions for Science and Technology 1

An object of 10 cm is placed in front of a plane mirror. The height of image will be …………….
(a) 5 cm
(b) 15 cm
(c) 20 cm
(d) 10 cm

When a ray of light travels from air to glass slab and strikes the surface of separation at 90°, then it …………….
(a) bends towards normal
(b) bends away from normal
(c) passes unbent
(d) passes in zigzag way

Explain how spectrum is formed.

If the potential difference across the ends of a conductor is 220 V and the resistance of the conductor is 44 Ω (ohm), then the current flowing through is _________.

1. 0.2 A
2. 0.5 A
3. 2 A
4. 5 A

When rays of light are incident on a glass slab then the incident ray and emergent ray are _________ each other.

1. perpendicular
2. parallel
3. opposite
4. concurrent

What is a spectrum?

The element eka-silicon in Mendeleev’s periodic table is known as ………… in the modern periodic table.

The element eka-silicon in Mendeleev’s periodic table is known as ………… in the modern periodic table.

CuSO_4(aq) + Zn_(s) → ZnSO_4(aq) + Cu_(s) is an example of a decomposition reaction.

The reddish brown deposit formed on iron nails kept in a solution of copper sulphate is

1. Cu₂O
2. Cu
3. CuO
4. CuS

What will be the change in the current if the potential difference is kept constant and the resistance of the circuit is made four times?

1. It will remain unchanged.
2. It will become four times.
3. It will become one-fourth.
4. It will become half.

Choose the correct alternative and rewrite the following sentence.

A ray of light strikes the glass slab at an angle of 50°. What is the angle of incidence?

Find the resistance of a conductor if 0.24 A current is passing through it and a potential difference of 24 V is applied across it.

Write a short note on dispersion of light.

Define refraction and state the laws of refraction.

Explain how the formation of a rainbow occurs.

Why do we get a spectrum of seven colors when white light is dispersed by a prism?

What is Resistivity?

Write the formula of resistivity

Write the SI unit of resistivity