SSC (English Medium) इयत्ता १० वी - Maharashtra State Board Question Bank Solutions for Science and Technology 1

An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from the mirror should a screen be placed, so that a sharp focused image can be obtained? Find the size and the nature of the image.

Which type of mirror is used by a dentist?

Find the odd man out:

Turmeric, Methyl Orange, Rose petals, Beetroot.

What are amphoteric oxides?

Explain the terms with examples.

Balanced equation

Balance the equation stepwise.
H₂S₂O₇(l) + H₂O(l) → H₂SO₄(l)

Balance the equation stepwise.

 SO₂(g) + H₂S(aq) → S(s) + H₂O(l) 

Balance the equation stepwise.

 Ag(s) + HCl(aq) → AgCl ↓+ H₂ ↑ 

Balance the equation stepwise.

NaOH(aq) + H₂SO₄(aq) → Na₂SO₄(aq) + H₂O(l)

Fill in the blank and explain the statement with reasoning:

 If the height of the orbit of a satellite from the earth surface is increased, the tangential velocity of the satellite will ...... 

What is meant by the orbit of a satellite?

Why are geostationary satellites not useful for studies of polar regions?

Complete the following table.

Solve the problem.

How much time a satellite in an orbit at height 35780 km above earth's surface would take, if the mass of the earth would have been four times its original mass?

If the height of a satellite completing one revolution around the earth in T seconds is h₁ meter, then what would be the height of a satellite taking  \[2\sqrt{2} T\] seconds for one revolution?

Considering first correlation, complete the second.
Hubble telescope : At 569 km above the earth’s surface
Orbit of Hubble telescope : .............................

Write the correct option by observing the figures.

Write down what you understood from the following chemical reaction.

AgNO_3(aq) + NaCI_(aq) → AgCI ↓ + NaNO_3(aq)

Mahendra and Virat are sitting at a distance of 1 metre from each other. Their masses are 75 kg and 80 kg respectively. What is the gravitational force between them? G = 6.67 x 10^-11 Nm²/kg² 

Write the proper name of the orbits of satellites shown in the following figure with their height from the earth’s surface.