Question 3 :
When a ray of light passes through an equilateral glass prism :
Question 4 :
A concave lens forms the image of an object which is:
Question 5 :
A thick glass slab with a silvered side forms multiple images on account of :
Question 7 :
During sun rise or sun set, the sun appears bigger because the rays of light coming from it pass through
Question 8 :
A ray of light is incident on the face of an equilateral prism at angle of 90°. The ray gets totally reflected on the second refracting face. The total deviation produced in the path of ray is :
Question 9 :
For an object placed at distance 20 cm in front of a convex lens, the image is at distance 20 cm behind the lens. The focal length of convex lens is:
Question 10 :
The critical angle for glass is 42°. The corresponding angle of refraction is :
Question 11 :
An object in a denser medium when viewed from a rarer medium appears to be raised. The shift is maximum for:
Question 12 :
A ray of light on entering from medium ‘a’ to medium ‘b ’ does not suffer refraction. The angle of incidence in medium ‘a ’ is :
Question 13 :
The centre of the sphere whose part is the lens surface, is called the _________________________ of that surface of the lens.
Question 15 :
A ray of light suffers refraction through an equilateral prism. The deviation produced by the prism does not depend on the:
Question 16 :
Figure below shows the distance-displacement graph of two waves A and B. Compare the wavelength of the two waves.<br><img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/ICSE%20-%20Class%2010%20/5fdc839571caf63cfc5493bf" />
Question 17 :
A tuning fork has a frequency of 212 Hz. It will produce resonance in a wooden board of frequency
Question 18 :
The speed (v) of a longitudinal wave in a gas gaseous medium of density(d), at a pressure( P) is given as
Question 19 :
The sound produced by two tuning forks A and B have same amplitude and same waveform, but the frequency of A is three times more than B. In such a case :
Question 20 :
A tuning fork of frequency 256 Hz will resonate with another tuning fork of frequency:
Question 21 :
A string is stretched between two nails fixed in the opposite walls and plucked from middle. The vibrations produced by the string are : –
Question 24 :
Two notes are produced from a flute and piano, such that they have same loudness and same pitch. The notes so produced differ in their :
Question 25 :
Class-10 Goyal Brothers Sound The voice of women is shrill as compared to men because of the difference in their :
Question 26 :
When a body vibrates under a periodic force, the vibrations of the body are:
Question 27 :
The amplitude of forced vibrations is generally than the amplitude of applied external force.
Question 28 :
For hearing an echo, the minimum distance between the source of sound and reflecting body should be
Question 30 :
Figure below shows the distance-displacement graph of two waves A and B. Compare the amplitude of the two waves.<br><img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/ICSE%20-%20Class%2010%20/5fdc839571caf63cfc5493bf" />
Question 33 :
The SI unit of work is joule. It is expressed in terms of mass, length and time as
Question 34 :
An actual pulley system always has mechanical advantage less than velocity ratio. It is because :
Question 37 :
An aeroplane is flying at an altitude of 10,000 m at a speed of 300 km/hour. The aeroplane at this height has :
Question 41 :
The correct relationship between the mechanical advantage (M.A.), velocity ratio (V.R.) and efficiency (n) is:
Question 42 :
Kilocalorie is the amount of heat required to raise the temperature of:
Question 44 :
The correct relationship between the effort (E) load (L) and mechanical advantage (M.A.) is :
Question 45 :
A person standing vertically upon his toes is an example of lever of :