What is the velocity of light in a diamond if the refractive index of diamond with respect to vacuum is 2.5?
Refractive index of the diamond (µ )= 2.5 We know The velocity of light in vacuum (c) = 3 × 108 m/s To find the velocity of light in diamond (v) Now, µd = c/v => 2.5 = (3 × 108)/v => v = ( 3 × 108 )/2.5 = 1.2 × 108 m/s
A shopkeeper bought two televisions at a certain amount. He sold the first television at a 30% profit and the second television at a 20% loss. If the se...
Due to reduction of 25% in price of oranges a customer can purchase 4 oranges more for Rs. 16. what is original price of an orange?
Lalit buys wheat at Rs. 20/kg and puts a price tag on it so as to earn a profit of 30%. However, his faulty balance shows 1000 gm when it is actually 60...
A dishonest dealer professes to sell his goods at cost price, but he uses a weight of 700 gm for the kg weight. Find his approximate gain per cent.
...Article ‘P’, if sold at a profit of 15% earns a profit of Rs. 405. If article ‘P’ is marked 70% above its cost price and then sold after offerin...
The ratio of cost price to marked price of a rice bag is 7:8 and the Marchant gets a profit of Rs.80 by selling the rice bag at Rs. 500. Then, what will...
Seema sold a laptop at a profit of 15%. If she had bought it at 10% less and sold it for ₹ 2,100 less, she would have gained 20%. What was the cost p...
A shopkeeper sold a school bag at a profit of 60%. Had he sold the school bag at 20% profit he would have earned Rs.164 less. Find the cost price of the...
If a shopkeeper buys toys at a price ranging from Rs. 175 to Rs. 200 and sells at prices ranging from Rs. 275 to Rs. 300, what is the maximum possible p...
A fruit vendor bought 500 bananas at Rs 25 per 10 bananas. 200 bananas got spoiled and hence thrown. He sold 12 dozen bananas at the rate of Rs 20 per d...
